flake.lock: Update

Flake lock file updates:

• Updated input 'llm-agents':
    'github:numtide/llm-agents.nix/7c2b15bbb92e200cb741372f050de789e7811539?narHash=sha256-sq50LUIQ58jHTH5mG811fpC24BVOCagBqi0UuSTZN9o%3D' (2026-05-17)
  → 'github:numtide/llm-agents.nix/3c69691d60d50f87cc0d5f6222992b63c90b010d?narHash=sha256-pXnXgFvoFQKt4gDnOx0OjKSsv0T51QmN5thbzWf9WX0%3D' (2026-05-20)
• Updated input 'llm-agents/bun2nix':
    'github:nix-community/bun2nix/2499dedd70744dba1815875b854818a3019e9e4c?narHash=sha256-oQvcadh2BCkrog%2BSGrG6YffKJrveYpjj3TdQJWaKhaM%3D' (2026-05-10)
  → 'github:nix-community/bun2nix/f2bc12af1a6369648aac41041ceeaa0b866599c6?narHash=sha256-oQvcadh2BCkrog%2BSGrG6YffKJrveYpjj3TdQJWaKhaM%3D' (2026-05-10)

.gitattributes

@@ -0,0 +1,3 @@
+# https://github.com/github-linguist/linguist/blob/master/docs/overrides.md
+
+home/linux/desktop/i3/conf/polybar/** linguist-vendored

.github/FUNDING.yml

@@ -1,2 +1,3 @@
+github: ryan4yin
 patreon: ryan4yin
-custom:  ['https://buymeacoffee.com/ryan4yin', 'https://afdian.net/a/ryan4yin']
+custom: ["https://buymeacoffee.com/ryan4yin"]

.github/workflows/flake_check.yml

@@ -1,24 +0,0 @@
-name: Nix Flake Check
-
-on: [push, pull_request, workflow_dispatch]
-
-jobs:
-  checks:
-    name: Check expressions
-    runs-on: ubuntu-latest
-
-    steps:
-      # - name: Checkout repository
-      #   uses: actions/checkout@v4
-      # - name: Install nix
-      #   uses: cachix/install-nix-action@v24
-      #   with:
-      #     install_url: https://nixos.org/nix/install
-      #     extra_nix_config: |
-      #       access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
-      #       experimental-features = nix-command flakes
-
-      - name: Run Nix Flake Check
-        run: |
-          echo 'TODO: nix flake check'
-          # nix flake check

.github/workflows/flake_evaltests.yml

@@ -0,0 +1,42 @@
+name: Nix Flake Eval Tests
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - "scripts/**"
+      - "**.md"
+      - "**.nu"
+      - "Justfile"
+  pull_request:
+    branches:
+      - main
+    paths-ignore:
+      - "scripts/**"
+      - "**.md"
+      - "**.nu"
+      - "Justfile"
+
+jobs:
+  checks:
+    name: Check expressions
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+      - name: Install nix
+        uses: cachix/install-nix-action@v31
+        with:
+          install_url: https://nixos.org/nix/install
+          extra_nix_config: |
+            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+            experimental-features = nix-command flakes
+
+      - name: Run Nix Flake Eval Tests
+        run: |
+          echo 'Flake Eval Tests'
+          # stack overflow...
+          # nix eval .#checks --show-trace --print-build-logs --verbose
+          nix eval .#evalTests --show-trace --print-build-logs --verbose

.github/workflows/mirror_to_gitee.yml

@@ -1,7 +1,11 @@
 name: Mirror this repo to Gitee
 on:
-  workflow_dispatch: {}
+  push:
-  push: {}
+    branches:
+      - main
+    tags:
+      - "*"
+
 jobs:
   mirror:
     runs-on: ubuntu-latest
@@ -26,4 +30,3 @@ jobs:
           export GIT_SSH_COMMAND="ssh -v -i ~/.ssh/id_rsa -o StrictHostKeyChecking=no"
           git remote add mirror "$INPUT_TARGET_REPO_URL"
           git push --tags --force --prune mirror "refs/remotes/origin/*:refs/heads/*"
-

.gitignore

@@ -1,5 +1,230 @@
+.Trash-1000/
 result
 result/
 .direnv/
 .DS_Store
 .pre-commit-config.yaml
+logs/
+core*
+!core/
+!core.nix
+!coredns*
+
+# =============== Python.gitignore ===========================
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[codz]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#   Usually these files are written by a python script from a template
+#   before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py.cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+# Pipfile.lock
+
+# UV
+#   Similar to Pipfile.lock, it is generally recommended to include uv.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+# uv.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+# poetry.lock
+# poetry.toml
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#   pdm recommends including project-wide configuration in pdm.toml, but excluding .pdm-python.
+#   https://pdm-project.org/en/latest/usage/project/#working-with-version-control
+# pdm.lock
+# pdm.toml
+.pdm-python
+.pdm-build/
+
+# pixi
+#   Similar to Pipfile.lock, it is generally recommended to include pixi.lock in version control.
+# pixi.lock
+#   Pixi creates a virtual environment in the .pixi directory, just like venv module creates one
+#   in the .venv directory. It is recommended not to include this directory in version control.
+.pixi
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# Redis
+*.rdb
+*.aof
+*.pid
+
+# RabbitMQ
+mnesia/
+rabbitmq/
+rabbitmq-data/
+
+# ActiveMQ
+activemq-data/
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.envrc
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#   JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#   be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#   and can be added to the global gitignore or merged into this file.  For a more nuclear
+#   option (not recommended) you can uncomment the following to ignore the entire idea folder.
+# .idea/
+
+# Abstra
+#   Abstra is an AI-powered process automation framework.
+#   Ignore directories containing user credentials, local state, and settings.
+#   Learn more at https://abstra.io/docs
+.abstra/
+
+# Visual Studio Code
+#   Visual Studio Code specific template is maintained in a separate VisualStudioCode.gitignore 
+#   that can be found at https://github.com/github/gitignore/blob/main/Global/VisualStudioCode.gitignore
+#   and can be added to the global gitignore or merged into this file. However, if you prefer, 
+#   you could uncomment the following to ignore the entire vscode folder
+# .vscode/
+
+# Ruff stuff:
+.ruff_cache/
+
+# PyPI configuration file
+.pypirc
+
+# Marimo
+marimo/_static/
+marimo/_lsp/
+__marimo__/
+
+# Streamlit
+.streamlit/secrets.toml

.prettierignore

@@ -0,0 +1,8 @@
+LICENSE.md
+dist
+pnpm-lock.yaml
+flake.lock
+vercel.json
+cache
+temp
+.temp

.prettierrc.yaml

@@ -0,0 +1,6 @@
+# https://prettier.io/docs/en/options
+semi: false
+singleQuote: false
+printWidth: 100
+proseWrap: always # always change wrapping in markdown text
+trailingComma: es5

.typos.toml

@@ -0,0 +1,45 @@
+[files]
+# Respect .ignore files.
+ignore-dot = true
+# Respect ignore files.
+ignore-files = true
+# Typos-specific ignore globs (gitignore syntax).
+# NOTE: This setting is ignored when you pass the path directly on the command line, as cachix/git-hooks.nix does.
+# To ignore those files, you must also exclude those directories via git-hooks.hooks.typos.settings.exclude.
+extend-exclude = [
+  "data/",
+  "rime-data/",
+]
+
+[default]
+# Check binary files as text.
+binary = false
+# Verify spelling in file names.
+check-filename = true
+# ignore some special identifiers(sha256, mac address, crypto keys, etc)
+extend-ignore-re = [
+  "iterm2",
+  "iHgEIBYKACAWIQSizQe9ljFEyyclWmtVhZllwnQrSwUCZZ1T9wIdAAAKCRBVhZll", # crypto keys
+  "noice",                                                            # noice.nvim
+  "crypted-nixos",
+  "daed",
+
+  # catppuccin theme colors
+  "11111b",
+  "1e1e2e",
+  "313244",
+  "414356",
+  "45475a",
+  "585b70",
+  "89b4fa",
+  "94e2d5",
+  "a6adc8",
+  "a6e3a1",
+  "bac2de",
+  "cdd6f4",
+  "f38ba8",
+  "f5c2e7",
+  "f5e0dc",
+  "f9e2af",
+  "fab387",
+]

AGENTS.md

@@ -0,0 +1,204 @@
+# AGENTS.md - Guidelines for AI Coding Agents
+
+This file defines the default operating guide for AI agents working in this Nix Flake repository.
+Keep changes minimal, verifiable, and safe for multi-host deployments.
+
+## Scope and Repository Model
+
+This repository manages:
+
+- NixOS hosts (desktop + servers)
+- macOS hosts via nix-darwin
+- Home Manager profiles shared across platforms
+- Remote deployments via colmena
+
+High-level layout:
+
+```text
+.
+├── flake.nix                    # Flake entry; outputs composed in ./outputs
+├── Justfile                     # Primary command entrypoint (uses nushell)
+├── outputs/
+│   ├── default.nix
+│   ├── x86_64-linux/
+│   ├── aarch64-linux/
+│   └── aarch64-darwin/
+├── modules/                     # NixOS + darwin modules
+├── home/                        # Home Manager modules
+├── hosts/                       # Host-specific config
+├── vars/                        # Shared variables
+├── lib/                         # Helper functions
+├── agents/                      # Reusable cross-project agent files and installer
+└── secrets/                     # Agenix secret definitions
+```
+
+## Ground Rules for Agents
+
+- Prefer `just` tasks over ad-hoc commands when an equivalent task exists.
+- Make the smallest reasonable change; avoid drive-by refactors.
+- Do not commit secrets, generated credentials, or private keys.
+- Preserve platform guards (`[linux]`, `[macos]`) and host naming conventions.
+- Run formatting and evaluation checks for touched areas before finishing.
+
+## Quick Start Workflow (Recommended)
+
+1. Inspect context:
+
+```bash
+just --list
+rg -n "<symbol-or-option>" modules home hosts outputs
+```
+
+2. Implement the change.
+3. Format:
+
+```bash
+just fmt
+```
+
+4. Validate:
+
+```bash
+just test
+```
+
+5. If deployment behavior changed, provide the exact `just` command the user should run (do not run
+   remote deploys unless explicitly requested).
+
+## Canonical Commands
+
+### Core quality loop
+
+```bash
+just fmt                    # format Nix files
+just test                   # run eval tests: nix eval .#evalTests ...
+nix flake check             # run flake checks + pre-commit style checks
+```
+
+### Dependency/input updates
+
+```bash
+just up                     # update all inputs and commit lock file
+just upp <input>            # update one input and commit lock file
+just up-nix                 # update nixpkgs-related inputs
+```
+
+### Local deploy commands
+
+```bash
+just local                  # deploy config for current hostname
+just local debug            # same with verbose/debug mode
+just niri                   # deploy "<hostname>-niri" on Linux
+just niri debug             # debug mode
+```
+
+### Remote deploy commands (colmena)
+
+```bash
+just col <tag>              # deploy nodes matching tag
+just lab                    # deploy all kubevirt nodes
+just k3s-prod               # deploy k3s production nodes
+just k3s-test               # deploy k3s test nodes
+```
+
+### Useful direct commands
+
+```bash
+nix eval .#evalTests --show-trace --print-build-logs --verbose
+nix build .#nixosConfigurations.<host>.config.system.build.toplevel
+nixos-rebuild switch --flake .#<hostname>
+```
+
+## Test Structure and Expectations
+
+Eval tests live under:
+
+- `outputs/x86_64-linux/tests/`
+- `outputs/aarch64-linux/tests/`
+- `outputs/aarch64-darwin/tests/`
+
+Typical test pair:
+
+- `expr.nix`
+- `expected.nix`
+
+Agent expectations:
+
+- If logic changes affect shared modules, run `just test`.
+- If only docs/comments changed, tests may be skipped, but say so explicitly.
+- If tests cannot run, report why and include the exact failing command.
+
+## Formatting and Style
+
+### Formatting tools
+
+- Nix: `nixfmt` (RFC style, width 100)
+- Non-Nix: `prettier` (see `.prettierrc.yaml`)
+- Spelling: `typos` (see `.typos.toml`)
+
+### Nix style conventions
+
+- Files use `kebab-case.nix`.
+- Prefer `inherit (...)` for attribute imports.
+- Prefer `lib.mkIf`, `lib.optional`, `lib.optionals` for conditional config.
+- Use `lib.mkDefault` for defaults and `lib.mkForce` only when necessary.
+- Keep module options documented with `description`.
+
+Module pattern:
+
+```nix
+{ lib, config, ... }:
+{
+  options.myFeature = {
+    enable = lib.mkEnableOption "my feature";
+  };
+
+  config = lib.mkIf config.myFeature.enable {
+    # ...
+  };
+}
+```
+
+## Platform Notes
+
+- `Justfile` uses `nu` (`set shell := ["nu", "-c"]`).
+- Some tasks exist only on Linux or macOS via `[linux]` / `[macos]` guards.
+- `just local` has different implementations per platform:
+  - Linux: `nixos-switch`
+  - macOS: `darwin-build` + `darwin-switch`
+
+## Secrets and Safety
+
+- Secrets are managed with agenix and an external private secrets repo.
+- Never inline secret values in Nix files, tests, or docs.
+- Do not run broad remote deploy commands unless requested.
+- Prefer build/eval validation first, deploy second.
+
+## Change Review Checklist (for agents)
+
+Before finishing, verify:
+
+1. Change is scoped to requested behavior.
+2. `just fmt` applied (or not needed, stated explicitly).
+3. `just test` run for config changes (or limitation explained).
+4. No secrets or machine-specific artifacts added.
+5. User-facing summary includes what changed and what was validated.
+
+## Common Pitfalls
+
+- Editing host-specific files when the change belongs in shared module layers (`modules/` or
+  `home/`).
+- Forgetting to update both Linux and darwin paths when touching shared abstractions.
+- Running deployment commands to validate syntax when `nix eval`/`nix build` would be safer.
+- Introducing hardcoded usernames/paths instead of using `myvars` and existing abstractions.
+
+## References
+
+- [README.md](./README.md)
+- [agents/README.md](./agents/README.md)
+- [Justfile](./Justfile)
+- [outputs/README.md](./outputs/README.md)
+- [hosts/README.md](./hosts/README.md)
+- [home/README.md](./home/README.md)
+- [modules/README.md](./modules/README.md)
+- [secrets/README.md](./secrets/README.md)

Justfile

@@ -0,0 +1,359 @@
+# just is a command runner, Justfile is very similar to Makefile, but simpler.
+
+# Use nushell for shell commands
+# To use this justfile, you need to enter a shell with just & nushell installed:
+# 
+#   nix shell nixpkgs#just nixpkgs#nushell
+set shell := ["nu", "-c"]
+
+utils_nu := absolute_path("utils.nu")
+
+############################################################################
+#
+#  Common commands(suitable for all machines)
+#
+############################################################################
+
+# List all the just commands
+default:
+    @just --list
+
+# Run eval tests
+[group('nix')]
+test:
+  nix eval .#evalTests --show-trace --print-build-logs --verbose
+
+# Update all the flake inputs
+[group('nix')]
+up:
+  nix flake update --commit-lock-file
+
+# Update specific input
+# Usage: just upp nixpkgs
+[group('nix')]
+upp input:
+  nix flake update {{input}} --commit-lock-file
+
+# List all generations of the system profile
+[group('nix')]
+history:
+  nix profile history --profile /nix/var/nix/profiles/system
+
+# Open a nix shell with the flake
+[group('nix')]
+repl:
+  nix repl -f flake:nixpkgs
+
+# remove all old generations
+# on darwin, you may need to switch to root user to run this command
+[group('nix')]
+clean:
+  # Wipe out NixOS's history
+  sudo nix profile wipe-history --profile /nix/var/nix/profiles/system
+  # Wipe out home-manager's history
+  nix profile wipe-history --profile $"($env.XDG_STATE_HOME)/nix/profiles/home-manager"
+
+# Garbage collect all unused nix store entries
+[group('nix')]
+gc:
+  # garbage collect all unused nix store entries(system-wide)
+  sudo nix-collect-garbage --delete-older-than 7d
+  # garbage collect all unused nix store entries(for the user - home-manager)
+  # https://github.com/NixOS/nix/issues/8508
+  nix-collect-garbage --delete-older-than 7d
+
+# Enter a shell session which has all the necessary tools for this flake
+[linux]
+[group('nix')]
+shell:
+  nix shell nixpkgs#git nixpkgs#neovim nixpkgs#colmena
+
+# Enter a shell session which has all the necessary tools for this flake
+[macos]
+[group('nix')]
+shell:
+  nix shell nixpkgs#git nixpkgs#neovim
+
+# upgrade determinate nix
+[macos]
+[group('nix')]
+nix-upgrade:
+  sudo determinate-nixd upgrade
+
+[group('nix')]
+fmt:
+  # format the nix files in this repo
+  ls **/*.nix | each { |it| nixfmt $it.name }
+
+# Show all the auto gc roots in the nix store
+[group('nix')]
+gcroot:
+  ls -al /nix/var/nix/gcroots/auto/
+
+# Verify all the store entries
+# Nix Store can contains corrupted entries if the nix store object has been modified unexpectedly.
+# This command will verify all the store entries,
+# and we need to fix the corrupted entries manually via `sudo nix store delete <store-path-1> <store-path-2> ...`
+[group('nix')]
+verify-store:
+  nix store verify --all
+
+# Repair Nix Store Objects
+[group('nix')]
+repair-store *paths:
+  nix store repair {{paths}}
+
+# Update all Nixpkgs inputs
+[group('nix')]
+up-nix:
+  nix flake update --commit-lock-file nixpkgs-stable nixpkgs-master nixpkgs-darwin nixpkgs-patched
+
+# override nixpkgs's commit hash
+[group('nix')]
+override-pkgs hash:
+  nix flake update --commit-lock-file nixpkgs --override-input nixpkgs github:NixOS/nixpkgs/{{hash}}
+
+############################################################################
+#
+#  NixOS Desktop related commands
+#
+############################################################################
+
+# Deploy the nixosConfiguration by hostname match
+[linux]
+[group('homelab')]
+local mode="default":
+  #!/usr/bin/env nu
+  use {{utils_nu}} *;
+  nixos-switch (hostname) {{mode}}
+
+# Deploy the niri nixosConfiguration by hostname match
+[linux]
+[group('desktop')]
+niri mode="default":
+  #!/usr/bin/env nu
+  use {{utils_nu}} *;
+  nixos-switch $"(hostname)-niri" {{mode}}
+
+############################################################################
+#
+#  Darwin related commands
+#
+############################################################################
+
+[macos]
+[group('desktop')]
+darwin-set-proxy:
+  sudo python3 scripts/darwin_set_proxy.py
+  sleep 1sec
+
+[macos]
+[group('desktop')]
+darwin-rollback:
+  #!/usr/bin/env nu
+  use {{utils_nu}} *;
+  darwin-rollback
+
+# Deploy the darwinConfiguration by hostname match
+[macos]
+[group('desktop')]
+local mode="default": 
+  #!/usr/bin/env nu
+  use {{utils_nu}} *;
+  darwin-build (hostname) {{mode}};
+  darwin-switch (hostname) {{mode}}
+
+
+# Reset launchpad to force it to reindex Applications
+[macos]
+[group('desktop')]
+reset-launchpad:
+  defaults write com.apple.dock ResetLaunchPad -bool true
+  killall Dock
+
+############################################################################
+#
+#  Homelab - Kubevirt Cluster related commands
+#
+############################################################################
+
+# Remote deployment via colmena
+[linux]
+[group('homelab')]
+col tag:
+  colmena apply --on '@{{tag}}' --verbose --show-trace
+
+# Build and upload a vm image
+[linux]
+[group('homelab')]
+upload-vm name mode="default":
+  #!/usr/bin/env nu
+  use {{utils_nu}} *;
+  upload-vm {{name}} {{mode}}
+
+# Deploy all the KubeVirt nodes(Physical machines running KubeVirt)
+[linux]
+[group('homelab')]
+lab:
+  colmena apply --on '@virt-*' --verbose --show-trace
+
+[linux]
+[group('homelab')]
+shoryu:
+  colmena apply --on '@kubevirt-shoryu' --verbose --show-trace
+
+[linux]
+[group('homelab')]
+shushou:
+  colmena apply --on '@kubevirt-shushou' --verbose --show-trace
+
+[linux]
+[group('homelab')]
+youko:
+  colmena apply --on '@kubevirt-youko' --verbose --show-trace
+
+############################################################################
+#
+# Commands for other Virtual Machines
+#
+############################################################################
+
+# Build and upload a vm image
+[linux]
+[group('homelab')]
+upload-idols mode="default":
+  #!/usr/bin/env nu
+  use {{utils_nu}} *; 
+  upload-vm aquamarine {{mode}}
+  upload-vm ruby {{mode}}
+  upload-vm kana {{mode}}
+
+[linux]
+[group('homelab')]
+aqua:
+  colmena apply --on '@aqua' --verbose --show-trace
+
+[linux]
+[group('homelab')]
+ruby:
+  colmena apply --on '@ruby' --verbose --show-trace
+
+[linux]
+[group('homelab')]
+kana:
+  colmena apply --on '@kana' --verbose --show-trace
+
+############################################################################
+#
+# Kubernetes related commands
+#
+############################################################################
+
+# Build and upload a vm image
+[linux]
+[group('homelab')]
+upload-k3s-prod mode="default":
+  #!/usr/bin/env nu
+  use {{utils_nu}} *; 
+  upload-vm k3s-prod-1-master-1 {{mode}}; 
+  upload-vm k3s-prod-1-master-2 {{mode}}; 
+  upload-vm k3s-prod-1-master-3 {{mode}}; 
+  upload-vm k3s-prod-1-worker-1 {{mode}}; 
+  upload-vm k3s-prod-1-worker-2 {{mode}}; 
+  upload-vm k3s-prod-1-worker-3 {{mode}};
+
+[linux]
+[group('homelab')]
+upload-k3s-test mode="default":
+  #!/usr/bin/env nu
+  use {{utils_nu}} *; 
+  upload-vm k3s-test-1-master-1 {{mode}}; 
+  upload-vm k3s-test-1-master-2 {{mode}}; 
+  upload-vm k3s-test-1-master-3 {{mode}};
+
+[linux]
+[group('homelab')]
+k3s-prod:
+  colmena apply --on '@k3s-prod-*' --verbose --show-trace
+
+[linux]
+[group('homelab')]
+k3s-test:
+  colmena apply --on '@k3s-test-*' --verbose --show-trace
+
+# =================================================
+#
+# Other useful commands
+#
+# =================================================
+
+[group('common')]
+path:
+   $env.PATH | split row ":"
+
+[group('common')]
+trace-access app *args:
+  strace -f -t -e trace=file {{app}} {{args}} | complete | $in.stderr | lines | find -v -r "(/nix/store|/newroot|/proc)" | parse --regex '"(/.+)"' | sort | uniq
+
+[linux]
+[group('common')]
+penvof pid:
+  sudo cat $"/proc/($pid)/environ" | tr '\0' '\n'
+
+# Remove all reflog entries and prune unreachable objects
+[group('git')]
+ggc:
+  git reflog expire --expire-unreachable=now --all
+  git gc --prune=now
+
+# Amend the last commit without changing the commit message
+[group('git')]
+game:
+  git commit --amend -a --no-edit
+
+# Delete all failed pods
+[group('k8s')]
+del-failed:
+  kubectl delete pod --all-namespaces --field-selector="status.phase==Failed"
+
+[linux]
+[group('services')]
+list-inactive:
+  systemctl list-units -all --state=inactive
+
+[linux]
+[group('services')]
+list-failed:
+  systemctl list-units -all --state=failed
+
+[linux]
+[group('services')]
+list-systemd:
+  systemctl list-units systemd-*
+
+
+# =================================================
+#
+# GitHub CLI + Nixpkgs Review via Github Action
+# https://github.com/ryan4yin/nixpkgs-review-gha
+#
+# =================================================
+
+[group('github')]
+gh-login:
+  gh auth login -h github.com --skip-ssh-key --git-protocol ssh
+
+# Run nixpkgs-review for PR
+[group('nixpkgs')]
+pkg-review pr:
+  gh workflow run review.yml --repo ryan4yin/nixpkgs-review-gha -f x86_64-darwin=no -f post-result=true -f pr={{pr}}
+
+# Run package tests for PR
+[group('nixpkgs')]
+pkg-test pr pname:
+  gh workflow run review.yml --repo ryan4yin/nixpkgs-review-gha -f x86_64-darwin=no -f post-result=true -f pr={{pr}} -f extra-args="-p {{pname}}.passthru.tests"
+
+# View the summary of a workflow
+[group('nixpkgs')]
+pkg-summary:
+  gh workflow view review.yml --repo ryan4yin/nixpkgs-review-gha

Makefile

@@ -1,161 +0,0 @@
-#
-#  NOTE: Makefile's target name should not be the same as one of the file or directory in the current directory, 
-#    otherwise the target will not be executed!
-#
-
-
-############################################################################
-#
-#  Nix commands related to the local machine
-#
-############################################################################
-
-i3: 
-	nixos-rebuild switch --flake .#ai_i3 --use-remote-sudo
-
-s-i3:
-	nixos-rebuild switch --flake .#shoukei_i3 --use-remote-sudo
-
-hypr:
-	nixos-rebuild switch --flake .#ai_hyprland --use-remote-sudo
-
-s-hypr:
-	nixos-rebuild switch --flake .#shoukei_hyprland --use-remote-sudo
-
-i3-debug:
-	nixos-rebuild switch --flake .#ai_i3 --use-remote-sudo --show-trace --verbose
-
-hypr-debug:
-	nixos-rebuild switch --flake .#ai_hyprland --use-remote-sudo --show-trace --verbose
-
-up:
-	nix flake update
-
-# Update specific input
-# usage: make upp i=wallpapers
-upp:
-	nix flake lock --update-input $(i)
-
-history:
-	nix profile history --profile /nix/var/nix/profiles/system
-
-repl:
-	nix repl -f flake:nixpkgs
-
-gc:
-	# remove all generations older than 7 days
-	sudo nix profile wipe-history --profile /nix/var/nix/profiles/system  --older-than 7d
-
-	# garbage collect all unused nix store entries
-	# sudo nix store gc --debug
-
-############################################################################
-#
-#  Darwin related commands, harmonica is my macbook pro's hostname
-#
-############################################################################
-
-darwin-set-proxy:
-	sudo python3 scripts/darwin_set_proxy.py
-	sleep 1
-
-darwin-rollback:
-	./result/sw/bin/darwin-rebuild rollback
-
-ha: darwin-set-proxy
-	nix build .#darwinConfigurations.harmonica.system
-	./result/sw/bin/darwin-rebuild switch --flake .#harmonica
-
-ha-debug: darwin-set-proxy
-	nom build .#darwinConfigurations.harmonica.system --show-trace --verbose
-	./result/sw/bin/darwin-rebuild switch --flake .#harmonica --show-trace --verbose
-
-fe: darwin-set-proxy
-	nix build .#darwinConfigurations.fern.system
-	./result/sw/bin/darwin-rebuild switch --flake .#fern
-
-fe-debug: darwin-set-proxy
-	nom build .#darwinConfigurations.fern.system --show-trace --verbose
-	./result/sw/bin/darwin-rebuild switch --flake .#fern --show-trace --verbose
-
-
-############################################################################
-#
-#  Idols, Commands related to my remote distributed building cluster
-#
-############################################################################
-
-add-idols-ssh-key:
-	ssh-add ~/.ssh/ai-idols
-
-idols: add-idols-ssh-key
-	colmena apply --on '@dist-build'
-
-aqua:
-	colmena apply --on '@aqua'
-
-ruby:
-	colmena apply --on '@ruby'
-
-kana:
-	colmena apply --on '@kana'
-
-idols-debug: add-idols-ssh-key
-	colmena apply --on '@dist-build' --verbose --show-trace
-
-# only used once to setup the virtual machines
-idols-image:
-	# take image for idols, and upload the image to proxmox nodes.
-	nom build .#aquamarine
-	scp result root@gtr5:/var/lib/vz/dump/vzdump-qemu-aquamarine.vma.zst
-
-	nom build .#ruby
-	scp result root@s500plus:/var/lib/vz/dump/vzdump-qemu-ruby.vma.zst
-
-	nom build .#kana
-	scp result root@um560:/var/lib/vz/dump/vzdump-qemu-kana.vma.zst
-
-
-############################################################################
-#
-#	RISC-V related commands
-#		
-############################################################################
-
-roll: add-idols-ssh-key
-	colmena apply --on '@riscv' 
-
-roll-debug: add-idols-ssh-key
-	colmena apply --on '@dist-build' --verbose --show-trace
-
-nozomi:
-	colmena apply --on '@nozomi'
-
-yukina:
-	colmena apply --on '@yukina'
-
-############################################################################
-#
-# Aarch64 related commands
-#
-############################################################################
-
-aarch:
-	colmena apply --on '@aarch'
-
-suzu:
-	colmena apply --on '@suzu'
-
-suzu-debug:
-	colmena apply --on '@suzu' --verbose --show-trace
-
-############################################################################
-#
-#  Misc, other useful commands
-#
-############################################################################
-
-fmt:
-	# format the nix files in this repo
-	nix fmt
-

README.md

@@ -8,70 +8,91 @@
 	<a href="https://github.com/ryan4yin/nix-config/stargazers">
 		<img alt="Stargazers" src="https://img.shields.io/github/stars/ryan4yin/nix-config?style=for-the-badge&logo=starship&color=C9CBFF&logoColor=D9E0EE&labelColor=302D41"></a>
     <a href="https://nixos.org/">
-        <img src="https://img.shields.io/badge/NixOS-23.05-informational.svg?style=for-the-badge&logo=nixos&color=F2CDCD&logoColor=D9E0EE&labelColor=302D41"></a>
+        <img src="https://img.shields.io/badge/NixOS-25.11-informational.svg?style=for-the-badge&logo=nixos&color=F2CDCD&logoColor=D9E0EE&labelColor=302D41"></a>
     <a href="https://github.com/ryan4yin/nixos-and-flakes-book">
-        <img src="https://img.shields.io/static/v1?label=Nix Flakes&message=learning&style=for-the-badge&logo=nixos&color=DDB6F2&logoColor=D9E0EE&labelColor=302D41"></a>
+        <img src="https://img.shields.io/badge/Nix%20Flakes-learning-informational.svg?style=for-the-badge&logo=nixos&color=F2CDCD&logoColor=D9E0EE&labelColor=302D41"></a>
   </a>
 </p>
 
-This repository is home to the nix code that builds my systems.
+> My configuration is becoming more and more complex, and **it will be difficult for beginners to
+> read**. If you are new to NixOS and want to know how I use NixOS, I would recommend you to take a
+> look at the [ryan4yin/nix-config/releases](https://github.com/ryan4yin/nix-config/releases) first,
+> **check out to some simpler older versions, such as
+> [i3-kickstarter](https://github.com/ryan4yin/nix-config/tree/i3-kickstarter), which will be much
+> easier to understand**.
+
+This repository is home to the nix code that builds my systems:
+
+1. NixOS Desktops: NixOS with home-manager, niri, agenix, etc.
+2. macOS Desktops: nix-darwin with home-manager, share the same home-manager configuration with
+   NixOS Desktops.
+3. NixOS Servers: virtual machines running on Proxmox/KubeVirt, with various services, such as
+   kubernetes, homepage, prometheus, grafana, etc.
+
+See [./hosts](./hosts) for details of each host.
+
+See [./Virtual-Machine.md](./Virtual-Machine.md) for details of how to create & manage KubeVirt's
+Virtual Machine from this flake.
 
 ## Why NixOS & Flakes?
 
-Nix allows for easy-to-manage, collaborative, reproducible deployments. This means that once something is setup and configured once, it works (almost) forever. If someone else shares their configuration, anyone can make use of it(if you really understand what you're copying/refering now).
+Nix allows for easy-to-manage, collaborative, reproducible deployments. This means that once
+something is setup and configured once, it works (almost) forever. If someone else shares their
+configuration, anyone else can just use it (if you really understand what you're copying/referring
+now).
 
-As for Flakes, refer to [Introduction to Flakes - NixOS & Nix Flakes Book](https://nixos-and-flakes.thiscute.world/nixos-with-flakes/introduction-to-flakes)
+As for Flakes, refer to
+[Introduction to Flakes - NixOS & Nix Flakes Book](https://nixos-and-flakes.thiscute.world/nixos-with-flakes/introduction-to-flakes)
 
-**Want to know NixOS & Flaks in detail? Looking for a beginner-friendly tutorial or best practices? You don't have to go through the pain I've experienced again! Check out  my [NixOS & Nix Flakes Book - 🛠️ ❤️ An unofficial & opinionated :book: for beginners](https://github.com/ryan4yin/nixos-and-flakes-book)!**
+**Want to know NixOS & Flakes in detail? Looking for a beginner-friendly tutorial or best practices?
+You don't have to go through the pain I've experienced again! Check out my
+[NixOS & Nix Flakes Book - 🛠️ ❤️ An unofficial & opinionated :book: for beginners](https://github.com/ryan4yin/nixos-and-flakes-book)!**
 
-> If you're using macOS, check out [ryan4yin/nix-darwin-kickstarter](https://github.com/ryan4yin/nix-darwin-kickstarter) for a quick start.
+> If you're using macOS, check out
+> [ryan4yin/nix-darwin-kickstarter](https://github.com/ryan4yin/nix-darwin-kickstarter) for a quick
+> start.
 
 ## Components
 
-|                             | NixOS(Wayland)                                                                                                    | NixOS(Xorg)                                                                                                       |
+|                                                                | NixOS(Wayland)                                                                                                      |
-| --------------------------- | :---------------------------------------------------------------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------- |
+| -------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------- |
-| **Window Manager**          | [Hyprland][Hyprland]                                                                                              | [i3][i3]                                                                                                          |
+| **Window Manager**                                             | [Niri][Niri]                                                                                                        |
-| **Terminal Emulator**       | [Kitty][Kitty]                                                                                                    | [Kitty][Kitty]                                                                                                    |
+| **Terminal Emulator**                                          | [Zellij][Zellij] + [foot][foot]/[Kitty][Kitty]/[Alacritty][Alacritty]/[Ghostty][Ghostty]                            |
-| **Bar**                     | [Waybar][Waybar]                                                                                                  | [i3block][i3block]                                                                                                |
+| **Status Bar** / **Notifier** / **Launcher** / **lockscreens** | [noctalia-shell][noctalia-shell]                                                                                    |
-| **Application Launcher**    | [anyrun][anyrun]                                                                                                  | [rofi][rofi]                                                                                                      |
+| **Display Manager**                                            | [tuigreet][tuigreet]                                                                                                |
-| **Notification Daemon**     | [Mako][Mako]                                                                                                      | [Dunst][Dunst]                                                                                                    |
+| **Color Scheme**                                               | [catppuccin-nix][catppuccin-nix]                                                                                    |
-| **Display Manager**         | [GDM][GDM]                                                                                                        | [GDM][GDM]                                                                                                        |
+| **network management tool**                                    | [NetworkManager][NetworkManager]                                                                                    |
-| **Color Scheme**            | [Catppuccin][Catppuccin]                                                                                          | [Catppuccin][Catppuccin]                                                                                          |
+| **Input method framework**                                     | [Fcitx5][Fcitx5] + [rime][rime] + [小鹤音形 flypy][flypy]                                                           |
-| **network management tool** | [NetworkManager][NetworkManager]                                                                                  | [NetworkManager][NetworkManager]                                                                                  |
+| **System resource monitor**                                    | [Btop][Btop]                                                                                                        |
-| **Input method framework**  | [Fcitx5][Fcitx5]                                                                                                  | [Fcitx5][Fcitx5]                                                                                                  |
+| **File Manager**                                               | [Yazi][Yazi] + [thunar][thunar]                                                                                     |
-| **System resource monitor** | [Btop][Btop]                                                                                                      | [Btop][Btop]                                                                                                      |
+| **Shell**                                                      | [Nushell][Nushell] + [Starship][Starship]                                                                           |
-| **File Manager**            | [ranger][ranger] + [thunar][thunar]                                                                               | [ranger][ranger] + [thunar][thunar]                                                                               |
+| **Media Player**                                               | [mpv][mpv]                                                                                                          |
-| **Shell**                   | [Nushell][Nushell] + [Starship][Starship]                                                                         | [Nushell][Nushell] + [Starship][Starship]                                                                         |
+| **Editors / IDE**                                              | [Helix][Helix] (primary), [Neovim][Neovim] (backup) — [configuration & usage](./home/base/core/editors/)            |
-| **Music Player**            | [mpd][mpd], [ncmpcpp][ncmpcpp], [mpc][mpc], [Netease-cloud-music-gtk][netease-cloud-music-gtk]                    | [Netease-cloud-music-gtk][netease-cloud-music-gtk]                                                                |
+| **Fonts**                                                      | [Nerd fonts][Nerd fonts]                                                                                            |
-| **Media Player**            | [mpv][mpv]                                                                                                        | [mpv][mpv]                                                                                                        |
+| **Image Viewer**                                               | [imv][imv]                                                                                                          |
-| **Text Editor**             | [Neovim][Neovim]                                                                                                  | [Neovim][Neovim]                                                                                                  |
+| **Screenshot Software**                                        | Niri's builtin function                                                                                             |
-| **Fonts**                   | [Nerd fonts][Nerd fonts]                                                                                          | [Nerd fonts][Nerd fonts]                                                                                          |
+| **Screen Recording**                                           | [OBS][OBS]                                                                                                          |
-| **Image Viewer**            | [imv][imv]                                                                                                        | [imv][imv]                                                                                                        |
+| **Filesystem & Encryption**                                    | tmpfs as `/`, [Btrfs][Btrfs] subvolumes on a [LUKS][LUKS] encrypted partition for persistent, unlock via passphrase |
-| **Screenshot Software**     | [grim][grim]                                                                                                      | [flameshot](https://github.com/flameshot-org/flameshot)                                                           |
+| **Secure Boot**                                                | [lanzaboote][lanzaboote]                                                                                            |
-| **Screen Recording**        | [OBS][OBS]                                                                                                        | [OBS][OBS]                                                                                                        |
-| **Filesystem & Encryption** | tmpfs on `/`, [Btrfs][Btrfs] subvolumes on a [LUKS][LUKS] crypted partition for persistent, unlock via passphrase | tmpfs on `/`, [Btrfs][Btrfs] subvolumes on a [LUKS][LUKS] crypted partition for persistent, unlock via passphrase |
-| **Secure Boot**             | [lanzaboote][lanzaboote]                                                                                          | [lanzaboote][lanzaboote]                                                                                          |
 
 Wallpapers: https://github.com/ryan4yin/wallpapers
 
-## Hyprland + AstroNvim
+## Screenshots
 
-![](./_img/hyprland_2023-07-29_1.webp)
+![desktop](./_img/2026-01-05_niri-noctalia_desktop.webp)
 
-![](./_img/hyprland_2023-07-29_2.webp)
+![overview](./_img/2026-01-04_niri-noctalia_overview.webp)
 
-## I3 + AstroNvim
+![nvim](./_img/2026-01-04_niri-noctalia_nvim.webp)
 
-![](./_img/i3_2023-07-29_1.webp)
+## Editors / IDE
-![](./_img/i3_2023-07-29_2.webp)
 
-## Neovim
+- **Terminal editors:** [./home/base/core/editors/](./home/base/core/editors/) — Helix / Neovim,
-
+  `$EDITOR`, docs.
-See [./home/base/desktop/neovim](./home/base/desktop/neovim) for details.
+- **VS Code (GUI, Home Manager on NixOS):**
-
+  [./home/linux/gui/base/editors.nix](./home/linux/gui/base/editors.nix).
-## Hosts
+- **LLM coding agents:** [./agents](./agents/) — rules, installers, CLI snippets; see
-
+  [./agents/README.md](./agents/README.md).
-See [./hosts](./hosts) for details.
 
 ## Secrets Management
 
@@ -79,71 +100,50 @@ See [./secrets](./secrets) for details.
 
 ## How to Deploy this Flake?
 
-> :red_circle: **IMPORTANT**: **You should NOT deploy this flake directly on your machine:exclamation: It will not succeed.** this flake contains my hardware configuration(such as [hardware-configuration.nix](hosts/idols/ai/hardware-configuration.nix), [cifs-mount.nix](https://github.com/ryan4yin/nix-config/blob/v0.1.1/hosts/idols/ai/cifs-mount.nix), [Nvidia Support](https://github.com/ryan4yin/nix-config/blob/v0.1.1/hosts/idols/ai/default.nix#L77-L91), etc.) which is not suitable for your hardware, and my private secrets repository [ryan4yin/nix-secrets](https://github.com/ryan4yin/nix-config/tree/main/secrets) that only I have access to. You may use this repo as a reference to build your own configuration.
+<!-- prettier-ignore -->
+> :red_circle: **IMPORTANT**: **You should NOT deploy this flake directly on your machine :exclamation:
+> It will not succeed.** This flake contains my hardware configuration(such as
+> [hardware-configuration.nix](hosts/idols-ai/hardware-configuration.nix),
+> [Nvidia Support](https://github.com/ryan4yin/nix-config/blob/v0.1.1/hosts/idols-ai/default.nix#L77-L91),
+> etc.) which is not suitable for your hardware, and requires my private secrets repository
+> [ryan4yin/nix-secrets](https://github.com/ryan4yin/nix-config/tree/main/secrets) to deploy. You
+> may use this repo as a reference to build your own configuration.
 
 For NixOS:
 
-> To deploy this flake from NixOS's official ISO image(purest installation method), please refer to [./nixos-installer/](./nixos-installer/)
+> To deploy this flake from NixOS's official ISO image (purest installation method), please refer to
-
+> [./nixos-installer/](./nixos-installer/)
-> Need to restart the machine when switching between `wayland` and `xorg`.
 
 ```bash
 # deploy one of the configuration based on the hostname
-sudo nixos-rebuild switch --flake .#ai_i3
+sudo nixos-rebuild switch --flake .#ai-niri
-# sudo nixos-rebuild switch --flake .#ai_hyprland
 
-# we can also deploy using `make`, which is defined in Makefile
+# Deploy the niri nixosConfiguration by hostname match
-make i3    # deploy my pc with i3 window manager
+just niri
-# make hypr  # deploy my pc with hyprland compositor
 
 # or we can deploy with details
-make i3-debug
+just niri debug
-# make hypr-debug
 ```
 
 For macOS:
 
 ```bash
-# deploy harmonicia's configuration(macOS Intel)
+# If you are deploying for the first time,
-make ha
+# 1. install nix & homebrew manually.
+# 2. prepare the deployment environment with essential packages available
+nix-shell -p just nushell
+# 3. comment home-manager's code in lib/macosSystem.nix to speed up the first deployment.
+# 4. comment out the proxy settings in scripts/darwin_set_proxy.py if the proxy is not ready yet.
 
-# deploy fern's configuration(Apple Silicon)
+# Deploy the darwinConfiguration by hostname match
-make fe
+just local
 
 # deploy with details
-make ha-debug
+just local debug
-# make fe
 ```
 
-> [What y'all will need when Nix drives you to drink.](https://www.youtube.com/watch?v=Eni9PPPPBpg) (copy from hlissner's dotfiles, it really matches my feelings when I first started using NixOS...)
+> [What y'all will need when Nix drives you to drink.](https://www.youtube.com/watch?v=Eni9PPPPBpg)
-
+> (copy from hlissner's dotfiles, it really matches my feelings when I first started using NixOS...)
-## How to create & managage VM from this flake?
-
-use `aquamarine` as an example, we can create a virtual machine with the following command:
-
-```shell
-# 1. generate a proxmox vma image file
-nom build .#aquamarine  # `nom`(nix-output-monitor) can be replaced by the standard command `nix`
-
-# 2. upload the genereated image to proxmox server's backup directory `/var/lib/vz/dump`
-#    please replace the vma file name with the one you generated in step 1.
-scp result/vzdump-qemu-aquamarine-nixos-23.11.20230603.dd49825.vma.zst root@192.168.5.174:/var/lib/vz/dump
-
-# 3. the image we uploaded will be listed in proxmox web ui's this page: [storage 'local'] -> [backups], we can restore a vm from it via the web ui now.
-```
-
-Once the virtual machine `aquamarine` is created, we can deploy updates to it with the following commands:
-
-```shell
-# 1. add the ssh key to ssh-agent
-ssh-add ~/.ssh/ai-idols
-
-# 2. deploy the configuration to all the remote host with tag `@dist-build`
-# using the ssh key we added in step 1
-colmena apply --on '@dist-build' --show-trace
-```
-
-If you're not familiar with remote deployment, please read this tutorial first: [Remote Deployment - NixOS & Flakes Book](https://nixos-and-flakes.thiscute.world/best-practices/remote-deployment)
 
 ## References
 
@@ -158,54 +158,44 @@ Other dotfiles that inspired me:
   - [davidtwco/veritas](https://github.com/davidtwco/veritas)
   - [gvolpe/nix-config](https://github.com/gvolpe/nix-config)
   - [Ruixi-rebirth/flakes](https://github.com/Ruixi-rebirth/flakes)
-  - [fufexan/dotfiles](https://github.com/fufexan/dotfiles): gtk theme, xdg, git, media, anyrun, etc.
+  - [fufexan/dotfiles](https://github.com/fufexan/dotfiles): gtk theme, xdg, git, media, etc.
+  - [nix-community/srvos](https://github.com/nix-community/srvos): a collection of opinionated and
+    sharable NixOS configurations for servers
 - Modularized NixOS Configuration
   - [hlissner/dotfiles](https://github.com/hlissner/dotfiles)
   - [viperML/dotfiles](https://github.com/viperML/dotfiles)
-- Hyprland(wayland)
-  - [notwidow/hyprland](https://github.com/notwidow/hyprland): This is where I start my hyprland journey.
-  - [HeinzDev/Hyprland-dotfiles](https://github.com/HeinzDev/Hyprland-dotfiles): Refer to the waybar configuration here.
-  - [linuxmobile/kaku](https://github.com/linuxmobile/kaku)
-- I3 Window Manager
-  - [endeavouros-i3wm-setup](https://github.com/endeavouros-team/endeavouros-i3wm-setup): I started using i3 here, and my i3 configuration is also based on it, but made a lot of changes.
-  - [denisse-dev/dotfiles](https://github.com/denisse-dev/dotfiles)
 - Neovim/AstroNvim
   - [maxbrunet/dotfiles](https://github.com/maxbrunet/dotfiles): astronvim with nix flakes.
 - Misc
   - [1amSimp1e/dots](https://github.com/1amSimp1e/dots)
 
-[Hyprland]: https://github.com/hyprwm/Hyprland
+[Niri]: https://github.com/YaLTeR/niri
-[i3]: https://github.com/i3/i3
 [Kitty]: https://github.com/kovidgoyal/kitty
+[foot]: https://codeberg.org/dnkl/foot
+[Alacritty]: https://github.com/alacritty/alacritty
+[Ghostty]: https://github.com/ghostty-org/ghostty
 [Nushell]: https://github.com/nushell/nushell
 [Starship]: https://github.com/starship/starship
-[Waybar]: https://github.com/Alexays/Waybar
-[i3block]: https://github.com/vivien/i3blocks
-[rofi]: https://github.com/davatorium/rofi
-[anyrun]: https://github.com/Kirottu/anyrun
-[Dunst]: https://github.com/dunst-project/dunst
 [Fcitx5]: https://github.com/fcitx/fcitx5
+[rime]: https://wiki.archlinux.org/title/Rime
+[flypy]: https://flypy.cc/
 [Btop]: https://github.com/aristocratos/btop
 [mpv]: https://github.com/mpv-player/mpv
+[Zellij]: https://github.com/zellij-org/zellij
+[Helix]: https://github.com/helix-editor/helix
 [Neovim]: https://github.com/neovim/neovim
 [AstroNvim]: https://github.com/AstroNvim/AstroNvim
-[flameshot]: https://github.com/flameshot-org/flameshot
-[grim]: https://github.com/emersion/grim
 [imv]: https://sr.ht/~exec64/imv/
 [OBS]: https://obsproject.com
-[Mako]: https://github.com/emersion/mako
 [Nerd fonts]: https://github.com/ryanoasis/nerd-fonts
-[catppuccin]: https://github.com/catppuccin/catppuccin
+[catppuccin-nix]: https://github.com/catppuccin/nix
-[mpd]: https://github.com/MusicPlayerDaemon/MPD
-[ncmpcpp]: https://github.com/ncmpcpp/ncmpcpp
-[mpc]: https://github.com/MusicPlayerDaemon/mpc
-[Netease-cloud-music-gtk]: https://github.com/gmg137/netease-cloud-music-gtk
 [NetworkManager]: https://wiki.gnome.org/Projects/NetworkManager
 [wl-clipboard]: https://github.com/bugaevc/wl-clipboard
-[GDM]: https://wiki.archlinux.org/title/GDM
+[tuigreet]: https://github.com/apognu/tuigreet
 [thunar]: https://gitlab.xfce.org/xfce/thunar
-[ranger]: https://github.com/ranger/ranger
+[Yazi]: https://github.com/sxyazi/yazi
 [Catppuccin]: https://github.com/catppuccin/catppuccin
 [Btrfs]: https://btrfs.readthedocs.io
 [LUKS]: https://wiki.archlinux.org/title/Dm-crypt/Encrypting_an_entire_system
 [lanzaboote]: https://github.com/nix-community/lanzaboote
+[noctalia-shell]: https://github.com/noctalia-dev/noctalia-shell

Virtual-Machine.md

@@ -0,0 +1,26 @@
+## How to create & managage KubeVirt's Virtual Machine from this flake?
+
+Use `aquamarine` as an example, first build and upload the virtual machine's qcow2 image to the file
+server:
+
+```shell
+just upload-vm aquamarine
+```
+
+Then create the virtual machine by creating a yaml file at
+[ryan4yin/k8s-gitops](https://github.com/ryan4yin/k8s-gitops/tree/main/vms), set the
+`spec.dataVolumeTemplates[0].source.http.url` to the uploaded file's URL, and fluxcd will
+automatically apply the changes, then a virtual machine named `aquamarine` will be created in the
+KubeVirt cluster.
+
+Once the virtual machine `aquamarine` is created, we can deploy updates to it with the following
+commands:
+
+```shell
+just col aquamarine
+just col kubevirt-shoryu
+just col k3s-test-1-master-1
+```
+
+If you're not familiar with remote deployment, please read this tutorial first:
+[Remote Deployment - NixOS & Flakes Book](https://nixos-and-flakes.thiscute.world/best-practices/remote-deployment)

agents/AGENTS.md

@@ -0,0 +1,85 @@
+# RULES - Global Agent Baseline
+
+This file defines the cross-project baseline for AI coding agents. It focuses on safety, boundaries,
+and portable behavior.
+
+## 1) Instruction Priority
+
+Apply instructions in this order:
+
+1. Runtime system/developer instructions
+2. User task request
+3. Project-local policy (`AGENTS.md`, `CLAUDE.md`, repo docs)
+4. This global RULES
+
+If rules conflict, follow the higher-priority source and state the conflict briefly.
+
+## 2) Hard Safety Boundaries (MUST NOT)
+
+- MUST NOT read/write outside the approved workspace.
+- MUST NOT perform broad operations on the entire home directory.
+- MUST NOT mutate remote Git state unless explicitly requested.
+  - Examples: `git push`, creating/updating remote PRs/Issues via `gh`.
+- MUST NOT auto-run remote-mutating commands unless explicitly requested.
+  - Examples: `kubectl apply/delete`, `helm upgrade`, `terraform apply`, remote `ssh` mutation.
+- MUST NOT use destructive/force/delete options EVEN if explicitly requested.
+  - Examples: `--force`, `rm -rf`, `git reset --hard`, `gh repo delete`, `terraform destroy`
+- MUST NOT expose or commit secrets (tokens, keys, kubeconfig credentials, passwords).
+
+## 3) Security and Secrets Handling
+
+- Never write secret literals into tracked files.
+- Use environment variables, secret managers, or placeholders.
+- Redact sensitive output in logs and summaries.
+- For infra/IaC changes, prefer plan/eval/check before apply/switch.
+
+## 4) Scope Discipline
+
+- Keep changes strictly within requested scope.
+- Do not refactor unrelated areas unless user asks.
+- Preserve backward compatibility unless a breaking change is explicitly requested.
+
+## 5) Change Hygiene
+
+- Keep diffs minimal and reviewable.
+- Group logically related edits together.
+- Do not revert user/unrelated changes unless explicitly asked.
+- Do not claim verification you did not run.
+
+## 6) Tooling Defaults
+
+- Prefer structural search tools first for code find/replace (`ast-grep`/`jq`/`yq`), then text tools
+  (`rg`, `fd`).
+- Prefer project task runners (`just`, `make`, `task`, `npm scripts`, etc.) over ad-hoc commands
+  when equivalent.
+- If a required command is not already available, use only `nix run`, `flake.nix`/`shell.nix` or
+  `uv`/`pnpm` to provide it.
+- If that is still insufficient, stop and ask the user to prepare the environment instead of using
+  any other installation method.
+- Use `gh` CLI for GitHub operations, especially code/PR/issue search and inspection.
+
+## 7) Environment Defaults
+
+- Primary OS: NixOS.
+- Shell: default to `nushell`, `bash` also exists.
+
+## 8) Script Engineering Principles
+
+Treat scripts as interruptible jobs that must be diagnosable and safe to rerun:
+
+- Split workflows into explicit stages; allow running a selected stage via flags/arguments.
+- Make reruns idempotent; persist progress after each stage and support resume.
+- Cache external data with invalidation strategy to speed retries and improve reproducibility.
+- For HTTP flows, separate transport success from business success; support retry/backoff.
+- Provide independent verification commands/checks for key outputs (counts, samples, invariants).
+
+## 9) Communication Defaults
+
+- Respond in the language the user is currently using, prefer English & Chinese.
+- Code, commands, identifiers, and code comments: English.
+- Be concise, concrete, and action-oriented.
+
+## 10) Project Overlay
+
+Project-local policy may add stricter constraints (build/test/deploy/style/ownership/environment).
+It must not weaken this baseline.

agents/README.md

@@ -0,0 +1,59 @@
+# agents
+
+Reusable, symlink-first agent resources shared across projects.
+
+This directory is the canonical source for baseline agent rules and supporting command references.
+The primary workflow is to symlink files from here into each agent runtime/config location.
+
+## What this directory contains
+
+- `AGENTS.md`: global baseline rules for coding agents.
+- `permissions.md`: permission policies for agent tool access.
+- `install-rules.py`: installs the baseline by creating symlinks in supported agent config dirs.
+- `install-cli.md`: curated CLI install/update command snippets.
+- `install-skills.md`: curated `npx skills` command snippets.
+
+## Core workflow
+
+1. Maintain shared rules in `agents/AGENTS.md`.
+2. Define permission policies in `agents/permissions.md`.
+3. Run `install-rules.py` to refresh symlinks in local agent homes.
+4. Use `install-cli.md` and `install-skills.md` as reference snippets when needed.
+
+## Install baseline rules (symlink-based)
+
+Run:
+
+```bash
+python3 agents/install-rules.py
+```
+
+Current targets:
+
+- Codex: `AGENTS.md` -> `${CODEX_HOME:-~/.codex}/AGENTS.md`
+- OpenCode: `AGENTS.md` -> `${XDG_CONFIG_HOME:-~/.config}/opencode/AGENTS.md`
+- Claude Code: `AGENTS.md` -> `~/.claude/CLAUDE.md`
+
+Behavior:
+
+- Each target is handled independently.
+- Missing destination directories are skipped.
+- Existing destination file/symlink is replaced with a symlink to this repo source file.
+
+## About `install-cli.md` and `install-skills.md`
+
+Use them as snippet libraries:
+
+- review the commands
+- select what you need
+- run selected commands manually
+
+## Conventions
+
+- Keep files portable and reviewable.
+- Keep secrets and machine-specific credentials out of this directory.
+- Keep guidance generic enough to reuse across multiple agent environments.
+
+## Goal
+
+Maintain one reusable source of truth for agent setup that stays simple to sync and easy to evolve.

agents/install-cli.md

@@ -0,0 +1,33 @@
+# Agent CLI Commands
+
+Reference commands for installing and updating agent CLIs. Run only the commands you need.
+
+## Install CLIs
+
+Installed via Nix:
+
+- codex
+- cursor-cli
+- claude-code
+- opencode
+
+Install Manually:
+
+```bash
+# kimi-cli
+uv tool install --python 3.13 kimi-cli
+uv tool upgrade kimi-cli --no-cache
+```
+
+## Optional tooling
+
+```bash
+# context7: up-to-date docs and code examples for LLMs and agents
+npx ctx7 setup
+```
+
+## Update npm-installed agent tools
+
+```bash
+npm update -g
+```

agents/install-rules.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+from pathlib import Path
+
+
+def install_one(target_dir: Path, source_file: Path, target_name: str) -> None:
+    if not target_dir.exists():
+        print(f"skipped  {target_dir} (not found)")
+        return
+
+    target_file = target_dir / target_name
+
+    if target_file.exists() or target_file.is_symlink():
+        target_file.unlink()
+
+    target_file.symlink_to(source_file)
+    print(f"linked  {target_file} -> {source_file}")
+
+
+def main() -> int:
+    script_dir = Path(__file__).resolve().parent
+    agents_file = script_dir / "AGENTS.md"
+
+    if not agents_file.is_file():
+        print(f"Missing source file: {agents_file}", file=sys.stderr)
+        return 1
+
+    codex_dir = Path(os.environ.get("CODEX_HOME", "~/.codex")).expanduser()
+    xdg_config_home = Path(os.environ.get("XDG_CONFIG_HOME", "~/.config")).expanduser()
+    opencode_dir = xdg_config_home / "opencode"
+    claude_dir = Path("~/.claude").expanduser()
+    install_one(codex_dir, agents_file, "AGENTS.md")
+    install_one(opencode_dir, agents_file, "AGENTS.md")
+    install_one(claude_dir, agents_file, "CLAUDE.md")
+
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

agents/install-skills.md

@@ -0,0 +1,63 @@
+# Agent Skills Commands
+
+Reference commands for listing, installing, and updating skills via `npx skills`. Run only the
+commands you need.
+
+## Inspect and update installed skills
+
+```bash
+# list all installed skills (project + global)
+npx skills list
+
+# list only global skills
+npx skills ls -g
+
+# check for updates
+npx skills check
+
+# update all installed skills
+npx skills update
+
+# remove from global scope
+npx skills remove --global web-design-guidelines
+```
+
+## Discover skills from repositories
+
+```bash
+# list skills in a repository
+npx skills add vercel-labs/agent-skills --list
+```
+
+## Install commonly used skill packs
+
+```bash
+# superpowers
+npx skills add -g obra/superpowers --agent '*' --skill '*'
+
+# github skills
+npx skills add -g github/awesome-copilot --agent '*' --skill 'git-commit' --skill 'gh-cli'
+
+# find skills
+npx skills add -g vercel-labs/skills --agent '*'
+
+# anthropic skills
+npx skills add -g anthropics/skills --agent '*' --skill 'skill-creator' --skill 'pdf'
+```
+
+## Optional packs
+
+```bash
+npx skills add -g pbakaus/impeccable --agent '*' --skill '*'
+
+npx skills add -g coreyhaines31/marketingskills --agent '*' --skill '*'
+
+npx skills add -g phuryn/pm-skills --agent '*' --skill '*'
+```
+
+References:
+
+- https://github.com/vercel-labs/skills
+- https://github.com/pbakaus/impeccable
+- https://github.com/coreyhaines31/marketingskills
+- https://github.com/phuryn/pm-skills

agents/permissions.md

@@ -0,0 +1,190 @@
+# Permissions Configuration
+
+This document records the current permission requirements for AI agents operating in this
+repository.
+
+## Scope
+
+| Environment              | Policy                                      |
+| ------------------------ | ------------------------------------------- |
+| **Personal workstation** | Restrictive - protect user's daily workflow |
+| **Homelab VMs**          | Permissive - agents have full autonomy      |
+
+The permissions below apply to **personal workstation** only. For homelab VMs, almost everything is
+allowed except destructive operations on production systems.
+
+## Default Policy
+
+| Tool             | Permission |
+| ---------------- | ---------- |
+| `*` (all others) | ask        |
+
+## File Read Permissions
+
+| Pattern         | Permission |
+| --------------- | ---------- |
+| `*` (all files) | allow      |
+| `*.env`         | deny       |
+| `*.env.*`       | deny       |
+| `*.env.example` | allow      |
+| `*.pem`         | deny       |
+| `*.key`         | deny       |
+| `*kubeconfig*`  | deny       |
+| `.ssh/**`       | deny       |
+| `.aws/**`       | deny       |
+| `.kube/**`      | deny       |
+| `.gnupg/**`     | deny       |
+
+## Always Allowed Tools
+
+These tools run without prompting:
+
+- `glob`
+- `grep`
+- `lsp`
+- `question`
+- `skill`
+- `todowrite`
+- `webfetch`
+- `websearch`
+- `codesearch`
+- `edit` (covers `write` and `apply_patch`)
+
+## Bash Command Permissions
+
+### Always Allowed (Read-only operations)
+
+**Git:**
+
+- `git status`, `git diff`, `git log`, `git show`, `git branch`, `git remote`
+
+**Kubernetes:**
+
+- `kubectl get`, `kubectl describe`, `kubectl logs`, `kubectl top`
+- `kubectl api-resources`, `kubectl api-versions`
+- `kubectl config view`, `kubectl config get-contexts`
+- `kubectl explain`
+- `kubectl kustomize`, `kustomize build`, `kustomize version`
+
+**Terraform:**
+
+- `terraform plan`, `terraform show`, `terraform state list`, `terraform state show`
+- `terraform output`, `terraform version`, `terraform providers`, `terraform fmt`
+
+**GitHub CLI:**
+
+- `gh repo view/list`, `gh issue view/list`, `gh pr view/list/diff/checks`
+- `gh api`, `gh search`, `gh gist list/view`
+- `gh release view/list`, `gh workflow list/view`, `gh run list/view`
+- `gh status`, `gh auth status`
+
+**Helm:**
+
+- `helm list`, `helm get`, `helm show`, `helm search`
+- `helm repo list`, `helm status`, `helm version`, `helm template`
+
+**Google Cloud:**
+
+- `gcloud * list`, `gcloud * describe`, `gcloud * get-iam-policy`
+- `gcloud config list`, `gcloud auth list`, `gcloud version`
+
+**Nix:**
+
+- `nix eval`, `nix build`, `nix flake show`, `nix flake metadata`
+- `nix flake check`, `nix flake lock`
+- `nix profile list`, `nix profile history`
+- `nix store verify`, `nix store ls`, `nix store path-info`
+- `nix search`, `nix doctor`, `nix --version`
+- `nixos-rebuild build`, `darwin-rebuild build`
+- `nom build`
+
+**Just:**
+
+- `just --list`, `just --show`, `just --dry-run`
+
+**Linters & Formatters:**
+
+- `statix check`, `deadnix`, `nixfmt --check`
+- `shellcheck`, `hadolint`, `actionlint`
+- `ruff check`, `clippy`, `prettier --check`
+- `tokei`
+
+**System diagnostics:**
+
+- `systemctl status`, `systemctl list-units`, `systemctl show`
+- `journalctl -u`, `journalctl --since`
+- `lspci`, `lsusb`, `lsblk`, `df`, `free`, `uptime`, `uname -a`
+- `sensors`, `lsof`
+
+**Git (extended):**
+
+- `git tag`, `git blame`, `git reflog`, `git stash list`
+- `git lfs status`, `git lfs ls-files`
+
+**Development tools:**
+
+- `go version`, `go env`, `go list`, `go doc`, `go vet`
+- `cargo --version`, `cargo tree`, `cargo metadata`
+- `python3 --version`, `python3 -m py_compile`
+- `node --version`, `pnpm list`, `uv pip list`
+
+**General utilities:**
+
+- `rg`, `fd`, `cp`, `mv`, `chmod`
+- `ls`, `cat`, `head`, `tail`, `wc`, `find`, `which`
+- `echo`, `pwd`, `date`, `env`, `printenv`
+- `file`, `stat`, `du`, `tree`, `bat`, `eza`
+- `jq`, `yq`, `tldr`
+- `mkdir`, `rmdir`, `grep`
+
+### Requires Confirmation
+
+| Command    | Permission |
+| ---------- | ---------- |
+| `rm *`     | ask        |
+| `rm -rf *` | ask        |
+
+### Always Denied
+
+| Command  | Permission |
+| -------- | ---------- |
+| `sudo *` | deny       |
+
+## Homelab VM Permissions
+
+For agents running in dedicated homelab VMs, permissions are significantly relaxed:
+
+| Category             | Permission            |
+| -------------------- | --------------------- |
+| `bash`               | allow (most commands) |
+| `edit`               | allow                 |
+| `write`              | allow                 |
+| `task`               | allow                 |
+| `external_directory` | allow                 |
+| `rm`                 | allow                 |
+
+**Still restricted in homelab VMs:**
+
+- Production cluster destructive operations (`kubectl delete`, `helm uninstall`)
+- Infrastructure teardown (`terraform destroy`)
+- Secret exposure in logs
+
+## Other Tool Permissions
+
+| Tool                 | Permission |
+| -------------------- | ---------- |
+| `edit`               | allow      |
+| `task`               | ask        |
+| `external_directory` | ask        |
+| `doom_loop`          | deny       |
+
+## Summary
+
+- **Default policy**: All tools `ask` — only explicitly whitelisted tools auto-allow
+- **File operations**: `read`, `glob`, `grep`, `edit`, `write` all allowed in workspace
+- **Nix operations**: Build/eval/flake commands auto-allowed (writes to store only)
+- **Linting & formatting**: All check commands auto-allowed
+- **System diagnostics**: Read-only system info auto-allowed
+- **Sensitive files**: Credentials, keys, and cloud configs are blocked
+- **Bash commands**: Read-only ops auto-allowed; `rm` requires confirmation; `sudo` blocked
+- **Scope control**: `task` and `external_directory` require approval

certs/.gitignore

@@ -0,0 +1,2 @@
+*.key
+*.csr

certs/README.md

@@ -0,0 +1,23 @@
+# My Private PKI / CA
+
+This is my private Private Key Infrastructure (PKI) / Certificate Authority (CA) for my personal
+use. It is used to issue certificates for my own servers and services.
+
+## Current Structure
+
+- **ecc-ca.crt** - ECC CA certificate file
+- **ecc-ca.srl** - CA serial number file for certificate tracking
+- **ecc-csr.conf** - OpenSSL configuration file for certificate signing requests
+- **ecc-server.crt** - Server certificate signed by the ECC CA
+- **gen-certs.sh** - Shell script to generate certificates automatically
+
+## Security Notes
+
+All private keys (`.key` files) are ignored by git and stored in a private secrets repository. The
+public certificates and configuration files are committed to this repository for reference.
+
+## Usage
+
+Run `./gen-certs.sh` to generate new certificates using the ECC CA configuration.
+
+See [../secrets](../secrets/) for the corresponding private key management.

certs/ecc-ca.crt

@@ -0,0 +1,10 @@
+-----BEGIN CERTIFICATE-----
+MIIBajCB8QIJAIwL98is2nQPMAoGCCqGSM49BAMEMB8xHTAbBgNVBAMMFFJ5YW40
+WWluJ3MgUm9vdCBDQSAxMB4XDTI0MDQwMzA4NDgzM1oXDTM0MDQwMTA4NDgzM1ow
+HzEdMBsGA1UEAwwUUnlhbjRZaW4ncyBSb290IENBIDEwdjAQBgcqhkjOPQIBBgUr
+gQQAIgNiAAQ6ixMbsGZ/u/ZnwzOZ49naVL7rQxm9C74SboGytKcYBH03JjC7tgZ3
+DylirxSLcTYHHtCz9ajdamP6+sgiGVpUODtfGSO+WmS+gAbLjCS37T41bkUhkx88
+JU4NsGhjPXcwCgYIKoZIzj0EAwQDaAAwZQIwDrGLSdO+p/1uywkzqzdM/OnZs8bp
+n60uBhUI7EZzDmrouOFeGx+dXYI5yy5AD/qDAjEA7fTQx+jccyOj4dimq1iU9+71
+e/gWYg0rexfy/+9dQY6kvwMzv8Lnm6URaRMbE1Q/
+-----END CERTIFICATE-----

certs/ecc-ca.srl

@@ -0,0 +1 @@
+C050420A8E5A3C1E

certs/ecc-csr.conf

@@ -0,0 +1,22 @@
+[ req ]
+prompt = no
+req_extensions = v3_ext
+distinguished_name = req_distinguished_name
+
+[ req_distinguished_name ]
+countryName            = US
+stateOrProvinceName    = NYK
+localityName           = NYK
+organizationName       = Ryan4Yin
+organizationalUnitName = Ryan4Yin
+commonName             = writefor.fun # deprecated, use subjectAltName(SAN) instead
+emailAddress           = rayn4yin@linux.com
+
+[ alt_names ]
+DNS.1 = writefor.fun
+DNS.2 = *.writefor.fun
+
+[ v3_ext ]
+subjectAltName=@alt_names
+basicConstraints       = CA:false
+extendedKeyUsage       = serverAuth

certs/ecc-server.crt

@@ -0,0 +1,14 @@
+-----BEGIN CERTIFICATE-----
+MIICKTCCAa6gAwIBAgIJAMBQQgqOWjweMAoGCCqGSM49BAMEMB8xHTAbBgNVBAMM
+FFJ5YW40WWluJ3MgUm9vdCBDQSAxMB4XDTI0MDQwMzA4NDgzM1oXDTM0MDQwMTA4
+NDgzM1owgYkxCzAJBgNVBAYTAlVTMQwwCgYDVQQIDANOWUsxDDAKBgNVBAcMA05Z
+SzERMA8GA1UECgwIUnlhbjRZaW4xETAPBgNVBAsMCFJ5YW40WWluMRUwEwYDVQQD
+DAx3cml0ZWZvci5mdW4xITAfBgkqhkiG9w0BCQEWEnJheW40eWluQGxpbnV4LmNv
+bTB2MBAGByqGSM49AgEGBSuBBAAiA2IABCNTYKDq/I99NltQR5eKrrovQXp9BbLV
+iuUdYmzFrAh+NC9ikiIqTfDwP+c+7QvDyI3KXu3KI2qPSPdxktZKDUPHK4p2Y2kZ
+xKOI2IFTgTqV3uBciyx7ayWPTwBYxsTDmqNLMEkwJwYDVR0RBCAwHoIMd3JpdGVm
+b3IuZnVugg4qLndyaXRlZm9yLmZ1bjAJBgNVHRMEAjAAMBMGA1UdJQQMMAoGCCsG
+AQUFBwMBMAoGCCqGSM49BAMEA2kAMGYCMQCHw9YkDo15P9mqEObvxSUak8tQmhBB
+9wB81Qg4c+JsMCZA1rMUB7GkNJj1Dr9rWLoCMQDSituLzmo/yPLEOrbNV83bj3/I
+ikKgobSie3pMXm5ZG7krOXaunyFRR/bIkih2V2Q=
+-----END CERTIFICATE-----

certs/gen-certs.sh

@@ -0,0 +1,22 @@
+# 1. Generate the private key for Root CA
+openssl ecparam -genkey -name secp384r1 -out ecc-ca.key
+# 2. Generate the certificate for Root CA with the validity period of 10 years
+# using the private key and some basic information
+# NOTE: we specify sha512 as the signature algorithm, which is the key point
+openssl req -x509 -new -SHA512 -key ecc-ca.key -subj "/CN=Ryan4Yin's Root CA 1" -days 3650 -out ecc-ca.crt
+
+# 3. Generate the private key for web server
+openssl ecparam -genkey -name secp384r1 -out ecc-server.key
+# 4. Generate the certificate signing request (CSR) for the server certificate
+# using the private key and the configuration file ecc-csr.conf
+openssl req -new -SHA512 -key ecc-server.key -out ecc-server.csr -config ecc-csr.conf
+# 5. Sign the server certificate with the Root CA's certificate and private key
+# NOTE: we specify sha512 as the signature algorithm, which is the key point
+openssl x509 -req -SHA512 -in ecc-server.csr -CA ecc-ca.crt -CAkey ecc-ca.key \
+  -CAcreateserial -out ecc-server.crt -days 3650 \
+  -extensions v3_ext -extfile ecc-csr.conf
+
+# 6. Display the information of the certificates
+openssl x509 -noout -text -in ecc-ca.crt
+openssl x509 -noout -text -in ecc-server.crt
+

constants.nix

@@ -1,17 +0,0 @@
-rec {
-  # user information
-  username = "ryan";
-  userfullname = "Ryan Yin";
-  useremail = "xiaoyin_c@qq.com";
-
-  allSystemAttrs = {
-    # linux systems
-    x64_system = "x86_64-linux";
-    riscv64_system = "riscv64-linux";
-    aarch64_system = "aarch64-linux";
-    # darwin systems
-    x64_darwin = "x86_64-darwin";
-    aarch64_darwin = "aarch64-darwin";
-  };
-  allSystems = builtins.attrValues allSystemAttrs;
-}

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "NixOS & macOS configuration of Ryan Yin";
+  description = "Ryan Yin's nix configuration for both NixOS & macOS";
 
   ##################################################################################################################
   #
@@ -8,79 +8,24 @@
   #
   ##################################################################################################################
 
-  # The `outputs` function will return all the build results of the flake.
+  outputs = inputs: import ./outputs inputs;
-  # A flake can have many use cases and different types of outputs,
-  # parameters in `outputs` are defined in `inputs` and can be referenced by their names.
-  # However, `self` is an exception, this special parameter points to the `outputs` itself (self-reference)
-  # The `@` syntax here is used to alias the attribute set of the inputs's parameter, making it convenient to use inside the function.
-  outputs = inputs @ {
-    self,
-    nixpkgs,
-    pre-commit-hooks,
-    ...
-  }: let
-    constants = import ./constants.nix;
-
-    # `lib.genAttrs [ "foo" "bar" ] (name: "x_" + name)` => `{ foo = "x_foo"; bar = "x_bar"; }`
-    forEachSystem = func: (nixpkgs.lib.genAttrs constants.allSystems func);
-
-    allSystemConfigurations = import ./systems {inherit self inputs constants;};
-  in
-    allSystemConfigurations
-    // {
-      # format the nix code in this flake
-      # alejandra is a nix formatter with a beautiful output
-      formatter = forEachSystem (
-        system: nixpkgs.legacyPackages.${system}.alejandra
-      );
-
-      # pre-commit hooks for nix code
-      checks = forEachSystem (
-        system: {
-          pre-commit-check = pre-commit-hooks.lib.${system}.run {
-            src = ./.;
-            hooks = {
-              alejandra.enable = true; # formatter
-              # deadnix.enable = true; # detect unused variable bindings in `*.nix`
-              statix.enable = true; # lints and suggestions for Nix code(auto suggestions)
-              prettier = {
-                enable = true;
-                excludes = [".js" ".md" ".ts"];
-              };
-            };
-          };
-        }
-      );
-      devShells = forEachSystem (
-        system: {
-          default = nixpkgs.legacyPackages.${system}.mkShell {
-            packages = [
-              # fix https://discourse.nixos.org/t/non-interactive-bash-errors-from-flake-nix-mkshell/33310
-              nixpkgs.legacyPackages.${system}.bashInteractive
-            ];
-            name = "dots";
-            shellHook = ''
-              ${self.checks.${system}.pre-commit-check.shellHook}
-            '';
-          };
-        }
-      );
-    };
 
   # the nixConfig here only affects the flake itself, not the system configuration!
   # for more information, see:
-  #     https://nixos-and-flakes.thiscute.world/nixos-with-flakes/add-custom-cache-servers
+  #     https://nixos-and-flakes.thiscute.world/nix-store/add-binary-cache-servers
   nixConfig = {
     # substituers will be appended to the default substituters when fetching packages
     extra-substituters = [
-      "https://anyrun.cachix.org"
+      "https://cache.numtide.com"
-      "https://hyprland.cachix.org"
+      # "https://nix-gaming.cachix.org"
       # "https://nixpkgs-wayland.cachix.org"
+      # "https://install.determinate.systems"
     ];
     extra-trusted-public-keys = [
-      "anyrun.cachix.org-1:pqBobmOjI7nKlsUMV25u9QHa9btJK65/C8vnO3p346s="
+      "niks3.numtide.com-1:DTx8wZduET09hRmMtKdQDxNNthLQETkc/yaX7M4qK0g="
-      "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
+      # "nix-gaming.cachix.org-1:nbjlureqMbRAxR1gJ/f3hxemL9svXaZF/Ees8vCUUs4="
       # "nixpkgs-wayland.cachix.org-1:3lwxaILxMRkVhehr5StQprHdEo4IrE8sRho9R9HOLYA="
+      # "cache.flakehub.com-3:hJuILl5sVK4iKm86JzgdXW12Y2Hwd5G07qKtHTOcDCM="
     ];
   };
 
@@ -90,23 +35,31 @@
     # There are many ways to reference flake inputs. The most widely used is github:owner/name/reference,
     # which represents the GitHub repository URL + branch/commit-id/tag.
 
-    # Official NixOS package source, using nixos's stable branch by default
+    # Official NixOS package source, using nixos's unstable branch by default
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
+    # Find git commit hash with build status here(3 jobs per day):
-    # nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    # https://hydra.nixos.org/jobset/nixpkgs/unstable
-    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
+    # update via nix flake update nixpkgs --override-input nixpkgs github:NixOS/nixpkgs/<commit-hash>
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-25.11";
+    nixpkgs-2505.url = "github:nixos/nixpkgs/nixos-25.05";
+
+    # nixpkgs with some custom patches
+    nixpkgs-patched.url = "github:ryan4yin/nixpkgs/nixos-unstable-patched";
+    # get some latest packages from the master branch
+    nixpkgs-master.url = "github:nixos/nixpkgs/master";
 
     # for macos
-    nixpkgs-darwin.url = "github:nixos/nixpkgs/nixpkgs-23.11-darwin";
+    # nixpkgs-darwin.url = "github:nixos/nixpkgs/nixpkgs-25.11-darwin";
+    nixpkgs-darwin.url = "github:nixos/nixpkgs/nixpkgs-unstable";
     nix-darwin = {
       url = "github:lnl7/nix-darwin";
       inputs.nixpkgs.follows = "nixpkgs-darwin";
     };
-    nixos-hardware.url = "github:NixOS/nixos-hardware/master";
 
     # home-manager, used for managing user configuration
     home-manager = {
-      url = "github:nix-community/home-manager/release-23.11";
+      url = "github:nix-community/home-manager/master";
-      # url = "github:nix-community/home-manager/master";
+      # url = "github:nix-community/home-manager/release-25.11";
 
       # The `follows` keyword in inputs is used for inheritance.
       # Here, `inputs.nixpkgs` of home-manager is kept consistent with the `inputs.nixpkgs` of the current flake,
@@ -114,24 +67,24 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    nixvim = {
+      url = "github:nix-community/nixvim";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    # https://github.com/catppuccin/nix
+    catppuccin = {
+      url = "github:catppuccin/nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     lanzaboote = {
-      url = "github:nix-community/lanzaboote/v0.3.0";
+      url = "github:nix-community/lanzaboote/v1.0.0";
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
-    impermanence.url = "github:nix-community/impermanence";
+    preservation = {
-
+      url = "github:nix-community/preservation";
-    hyprland = {
-      url = "github:hyprwm/Hyprland/v0.33.1";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-
-    # community wayland nixpkgs
-    # nixpkgs-wayland.url = "github:nix-community/nixpkgs-wayland";
-    # anyrun - a wayland launcher
-    anyrun = {
-      url = "github:Kirottu/anyrun";
-      inputs.nixpkgs.follows = "nixpkgs";
     };
 
     # generate iso/qcow2/docker/... image from nixos configuration
@@ -141,30 +94,64 @@
     };
     # secrets management
     agenix = {
-      # lock with git commit at 0.14.0
+      # lock with git commit at May 18, 2025
-      url = "github:ryantm/agenix/54693c91d923fecb4cf04c4535e3d84f8dec7919";
+      url = "github:ryantm/agenix/4835b1dc898959d8547a871ef484930675cb47f1";
       # replaced with a type-safe reimplementation to get a better error message and less bugs.
       # url = "github:ryan4yin/ragenix";
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    disko = {
+      url = "github:nix-community/disko/v1.13.0";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     # add git hooks to format nix code before commit
     pre-commit-hooks = {
-      url = "github:cachix/pre-commit-hooks.nix";
+      url = "github:cachix/git-hooks.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    nuenv = {
+      url = "github:DeterminateSystems/nuenv";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    haumea = {
+      url = "github:nix-community/haumea/v0.2.2";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    nixpak = {
+      url = "github:nixpak/nixpak";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    blender-bin = {
+      url = "github:edolstra/nix-warez?dir=blender";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    nixos-apple-silicon = {
+      # asahi-6.18.9
+      url = "github:nix-community/nixos-apple-silicon";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    # AI coding agents
+    llm-agents.url = "github:numtide/llm-agents.nix";
+
+    # -------------- Gaming ---------------------
+
+    nix-gaming = {
+      url = "github:fufexan/nix-gaming";
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
     ########################  Some non-flake repositories  #########################################
 
-    # AstroNvim is an aesthetic and feature-rich neovim config.
+    nu_scripts = {
-    astronvim = {
+      url = "github:ryan4yin/nu_scripts";
-      url = "github:AstroNvim/AstroNvim/v3.40.3";
-      flake = false;
-    };
-
-    # useful nushell scripts, such as auto_completion
-    nushell-scripts = {
-      url = "github:nushell/nu_scripts/main";
       flake = false;
     };
 
@@ -177,6 +164,11 @@
       flake = false;
     };
 
+    my-asahi-firmware = {
+      url = "git+ssh://git@github.com/ryan4yin/asahi-firmware.git?shallow=1";
+      flake = false;
+    };
+
     # my wallpapers
     wallpapers = {
       url = "github:ryan4yin/wallpapers";
@@ -185,14 +177,7 @@
 
     nur-ryan4yin = {
       url = "github:ryan4yin/nur-packages";
-      # inputs.nixpkgs.follows = "nixpkgs";
+      inputs.nixpkgs.follows = "nixpkgs";
     };
-
-    # riscv64 SBCs
-    nixos-licheepi4a.url = "github:ryan4yin/nixos-licheepi4a";
-    # nixos-jh7110.url = "github:ryan4yin/nixos-jh7110";
-
-    # aarch64 SBCs
-    nixos-rk3588.url = "github:ryan4yin/nixos-rk3588";
   };
 }

hardening/README.md

@@ -0,0 +1,115 @@
+# Linux Hardening
+
+> Work in progress.
+
+## Goal
+
+- **System Level**: Protect critical files from being accessed by untrusted applications.
+  1. Such as browser cookies, SSH keys, etc.
+- **Per-App Level**: Prevent untrusted applications(such as closed-source apps) from:
+  1. Accessing files they shouldn't.
+     - Such as a malicious application accessing your browser's cookies, SSH Keys, etc.
+  1. Accessing the network when they don't need to.
+  1. Accessing hardware devices they don't need.
+
+## Current Structure
+
+### 1. **System Level**
+
+- **AppArmor** (`apparmor/`): AppArmor profiles and configuration
+- **Kernel & System Hardening** (`profiles/`): System-wide hardening profiles
+
+### 2. **Per-App Level**
+
+- **Nixpak** (`nixpaks/`): Bubblewrap-based sandboxing for applications
+  - Firefox configuration
+  - QQ (Chinese messaging app) configuration
+  - Modular system with reusable components
+- **Firejail** (legacy): SUID-based sandboxing (not used)
+- **Bubblewrap** (`bwraps/`): Direct bubblewrap configurations
+  - WeChat sandboxing configuration
+
+## Current Implementation Status
+
+| Component         | Status    | Notes                          |
+| ----------------- | --------- | ------------------------------ |
+| AppArmor Profiles | 🚧 WIP    | Basic structure in place       |
+| Nixpak Firefox    | ✅ Active | Firefox sandboxing via nixpak  |
+| Nixpak QQ         | ✅ Active | QQ application sandboxing      |
+| Bubblewrap WeChat | ✅ Active | WeChat specific sandboxing     |
+| System Profiles   | 🚧 WIP    | Hardened system configurations |
+
+## Directory Structure
+
+```
+hardening/
+├── README.md
+├── apparmor/           # AppArmor security profiles
+│   └── default.nix
+├── bwraps/            # Direct bubblewrap configurations
+│   ├── default.nix
+│   └── wechat.nix
+├── nixpaks/           # Nixpak application sandboxing
+│   ├── default.nix
+│   ├── firefox.nix
+│   ├── qq.nix
+│   └── modules/       # Reusable nixpak modules
+│       ├── gui-base.nix
+│       └── network.nix
+└── profiles/          # System hardening profiles
+    └── default.nix
+```
+
+## Kernel Hardening
+
+- NixOS Kernel Config:
+  https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/os-specific/linux/kernel/hardened/config.nix
+
+## System Hardening
+
+- NixOS Profile:
+  https://github.com/NixOS/nixpkgs/blob/nixos-unstable/nixos/modules/profiles/hardened.nix
+- Apparmor: [roddhjav/apparmor.d](https://github.com/roddhjav/apparmor.d)
+  - https://gitlab.com/apparmor/apparmor/-/wikis/Documentation
+  - AppArmor.d is a set of over 1500 AppArmor profiles whose aim is to confine most Linux based
+    applications and processes.
+  - But all the profiles of AppArmor assume a FHS filesystem, which caused all apparmor policies
+    takes no effect on NixOS.
+  - Apparmor on NixOS Roadmap:
+    - https://discourse.nixos.org/t/apparmor-on-nixos-roadmap/57217
+    - https://github.com/LordGrimmauld/aa-alias-manager
+- SELinux: too complex, not recommended for personal use.
+
+## Application Sandboxing
+
+- [Bubblewrap](https://github.com/containers/bubblewrap):
+  [nixpak](https://github.com/nixpak/nixpak), more secure than firejail, but no batteries included.
+  - NixOS's FHSEnv is implemented using bubblewrap by default.
+- [Firejail](https://github.com/netblue30/firejail/tree/master/etc): A SUID security sandbox with
+  hundreds of security profiles for many common applications in the default installation.
+  - https://wiki.nixos.org/wiki/Firejail
+  - Firejail needs SUID to work, which is considered a security risk -
+    [Does firejail improve the security of my system?](https://github.com/netblue30/firejail/discussions/4601)
+- [Systemd/Hardening](https://wiki.nixos.org/wiki/Systemd/Hardening): Systemd also provides some
+  sandboxing features.
+
+## NOTE
+
+**Running untrusted code is never safe, kernel hardening & sandboxing cannot change this**.
+
+If you want to run untrusted code, please use a VM & an isolated network environment, which will
+provide a much higher level of security.
+
+## References
+
+- [Harden your NixOS workstation - dataswamp](https://dataswamp.org/~solene/2022-01-13-nixos-hardened.html)
+- [Linux Insecurities - Madaidans](https://madaidans-insecurities.github.io/linux.html)
+- [Sandboxing all programs by default - NixOS Discourse](https://discourse.nixos.org/t/sandboxing-all-programs-by-default/7792)
+- [Paranoid NixOS Setup - xeiaso](https://xeiaso.net/blog/paranoid-nixos-2021-07-18/)
+- [nix-mineral](https://github.com/cynicsketch/nix-mineral): NixOS module for convenient system
+  hardening.
+- apparmor configs:
+  - https://github.com/zramctl/dotfiles/blob/4fe177f6984154960942bb47d5a375098ec6ed6a/modules/nixos/security/apparmor.nix#L4
+  - https://git.grimmauld.de/Grimmauld/grimm-nixos-laptop/src/branch/main/hardening
+- Others:
+  - Directly via `buildFHSUserEnvBubblewrap`:

hardening/apparmor/default.nix

@@ -0,0 +1,59 @@
+{
+  config,
+  pkgs,
+  ...
+}:
+{
+  services.dbus.apparmor = "enabled";
+  security.apparmor = {
+    enable = true;
+
+    # kill process that are not confined but have apparmor profiles enabled
+    killUnconfinedConfinables = true;
+    packages = with pkgs; [
+      apparmor-utils
+      apparmor-profiles
+    ];
+
+    # apparmor policies
+    policies = {
+      "default_deny" = {
+        enforce = false;
+        enable = false;
+        profile = ''
+          profile default_deny /** { }
+        '';
+      };
+
+      "sudo" = {
+        enforce = false;
+        enable = false;
+        profile = ''
+          ${pkgs.sudo}/bin/sudo {
+            file /** rwlkUx,
+          }
+        '';
+      };
+
+      "nix" = {
+        enforce = false;
+        enable = false;
+        profile = ''
+          ${config.nix.package}/bin/nix {
+            unconfined,
+          }
+        '';
+      };
+    };
+  };
+
+  environment.systemPackages = with pkgs; [
+    apparmor-bin-utils
+    apparmor-profiles
+    apparmor-parser
+    libapparmor
+    apparmor-kernel-patches
+    apparmor-pam
+    apparmor-utils
+  ];
+}

hardening/bwraps/default.nix

@@ -0,0 +1,9 @@
+{
+  nixpkgs.overlays = [
+    (_: super: {
+      bwraps = {
+        wechat = super.callPackage ./wechat.nix { };
+      };
+    })
+  ];
+}

hardening/bwraps/wechat.nix

@@ -0,0 +1,102 @@
+# - wechat's flatpak manifest: https://github.com/flathub/com.tencent.WeChat/blob/master/com.tencent.WeChat.yaml
+# Refer:
+# - Flatpak manifest's docs:
+#   - https://docs.flatpak.org/en/latest/manifests.html
+#   - https://docs.flatpak.org/en/latest/sandbox-permissions.html
+#
+# TODO Since appimageTools.wrapAppImage do not support overriding, I have to pack this package myself.
+# https://github.com/NixOS/nixpkgs/pull/358977
+{
+  appimageTools,
+  fetchurl,
+  stdenvNoCC,
+}:
+let
+  pname = "wechat";
+  # https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/by-name/we/wechat/package.nix
+  sources = {
+    # use https://web.archive.org/save to archive the Linux versions
+    # add `if_` at the end of timestamps to avoid toolbar insertion
+    # for a more complicated guide, see https://en.wikipedia.org/wiki/Help:Using_the_Wayback_Machine
+    aarch64-linux = {
+      version = "4.1.1.4";
+      src = fetchurl {
+        url = "https://web.archive.org/web/20260311102559if_/https://dldir1v6.qq.com/weixin/Universal/Linux/WeChatLinux_arm64.AppImage";
+        hash = "sha256-YlWJxT62tXDaNwYVpsPMC5elFH8fsbI1HjTQn6ePiPo=";
+      };
+    };
+    x86_64-linux = {
+      version = "4.1.1.4";
+      src = fetchurl {
+        url = "https://web.archive.org/web/20260311102439if_/https://dldir1v6.qq.com/weixin/Universal/Linux/WeChatLinux_x86_64.AppImage";
+        hash = "sha256-XxAvFnlljqurGPDgRr+DnuCKbdVvgXBPh02DLHY3Oz8=";
+      };
+    };
+  };
+
+  inherit (stdenvNoCC.hostPlatform) system;
+  inherit (sources.${system} or (throw "Unsupported system: ${system}")) version src;
+
+  # https://github.com/NixOS/nixpkgs/blob/master/pkgs/by-name/we/wechat/linux.nix
+  appimageContents = appimageTools.extract {
+    inherit pname version src;
+    postExtract = ''
+      patchelf --replace-needed libtiff.so.5 libtiff.so $out/opt/wechat/wechat
+    '';
+  };
+in
+appimageTools.wrapAppImage {
+  inherit pname version;
+
+  src = appimageContents;
+
+  extraInstallCommands = ''
+    mkdir -p $out/share/applications
+    cp ${appimageContents}/wechat.desktop $out/share/applications/
+    mkdir -p $out/share/pixmaps
+    cp ${appimageContents}/wechat.png $out/share/pixmaps/
+
+    substituteInPlace $out/share/applications/wechat.desktop --replace-fail AppRun wechat
+  '';
+
+  # Add these root paths to FHS sandbox to prevent WeChat from accessing them by default
+  # Adapted from https://aur.archlinux.org/cgit/aur.git/tree/wechat-universal.sh?h=wechat-universal-bwrap
+  extraPreBwrapCmds = ''
+    XDG_DOCUMENTS_DIR="''${XDG_DOCUMENTS_DIR:-$(xdg-user-dir DOCUMENTS)}"
+    if [[ -z "''${XDG_DOCUMENTS_DIR}" ]]; then
+        echo 'Error: Failed to get XDG_DOCUMENTS_DIR, refuse to continue'
+        exit 1
+    fi
+
+    WECHAT_DATA_DIR="''${XDG_DOCUMENTS_DIR}/WeChat_Data"
+
+    # Using ''${WECHAT_DATA_DIR} as Wechat Data folder
+    WECHAT_HOME_DIR="''${WECHAT_DATA_DIR}/home"
+    WECHAT_FILES_DIR="''${WECHAT_DATA_DIR}/xwechat_files"
+
+    mkdir -p "''${WECHAT_FILES_DIR}"
+    mkdir -p "''${WECHAT_HOME_DIR}"
+    ln -snf "''${WECHAT_FILES_DIR}" "''${WECHAT_HOME_DIR}/xwechat_files"
+  '';
+  extraBwrapArgs = [
+    "--tmpfs /home"
+    "--tmpfs /root"
+    # format: --bind <host-path> <sandbox-path>
+    "--bind \${WECHAT_HOME_DIR} \${HOME}"
+    "--bind \${WECHAT_FILES_DIR} \${WECHAT_FILES_DIR}"
+    "--chdir \${HOME}"
+    # wechat-universal only supports xcb
+    "--setenv QT_QPA_PLATFORM xcb"
+    "--setenv QT_AUTO_SCREEN_SCALE_FACTOR 1"
+    # use fcitx as IME
+    "--setenv QT_IM_MODULE fcitx"
+    "--setenv GTK_IM_MODULE fcitx"
+  ];
+  chdirToPwd = false;
+  unshareNet = false;
+  unshareIpc = true;
+  unsharePid = true;
+  unshareUts = true;
+  unshareCgroup = true;
+  privateTmp = true;
+}

hardening/nixpaks/default.nix

@@ -0,0 +1,31 @@
+{
+  pkgs,
+  pkgs-master,
+  nixpak,
+  ...
+}:
+let
+  callArgs = {
+    mkNixPak = nixpak.lib.nixpak {
+      inherit (pkgs) lib;
+      inherit pkgs;
+    };
+    safeBind = sloth: realdir: mapdir: [
+      (sloth.mkdir (sloth.concat' sloth.appDataDir realdir))
+      (sloth.concat' sloth.homeDir mapdir)
+    ];
+  };
+  wrapper = _pkgs: path: (_pkgs.callPackage path callArgs);
+in
+{
+  # Add nixpaked Apps into nixpkgs, and reference them in home-manager or other nixos modules
+  nixpkgs.overlays = [
+    (_: super: {
+      nixpaks = {
+        qq = wrapper super ./qq.nix;
+        telegram-desktop = wrapper super ./telegram-desktop.nix;
+        firefox = wrapper super ./firefox.nix;
+      };
+    })
+  ];
+}

hardening/nixpaks/firefox.nix

@@ -0,0 +1,127 @@
+# Refer:
+# - Flatpak manifest's docs:
+#   - https://docs.flatpak.org/en/latest/manifests.html
+#   - https://docs.flatpak.org/en/latest/sandbox-permissions.html
+# - Firefox's flatpak manifest: https://hg.mozilla.org/mozilla-central/file/tip/taskcluster/docker/firefox-flatpak/runme.sh#l151
+{
+  lib,
+  firefox,
+  mkNixPak,
+  buildEnv,
+  makeDesktopItem,
+  ...
+}:
+
+let
+  appId = "org.mozilla.firefox";
+  wrapped = mkNixPak {
+    config =
+      {
+        config,
+        sloth,
+        ...
+      }:
+      {
+        app = {
+          package = firefox;
+          binPath = "bin/firefox";
+        };
+        flatpak.appId = appId;
+
+        imports = [
+          ./modules/gui-base.nix
+          ./modules/network.nix
+          ./modules/common.nix
+        ];
+
+        bubblewrap = {
+          # To trace all the home files Firefox accesses, you can use the following nushell command:
+          #   just trace-access firefox
+          # See the Justfile in the root of this repository for more information.
+          bind.rw = [
+            # given the read write permission to the following directories.
+            # NOTE: sloth.mkdir is used to create the directory if it does not exist!
+            (sloth.mkdir (sloth.concat' sloth.homeDir "/.mozilla"))
+
+            sloth.xdgDocumentsDir
+            sloth.xdgDownloadDir
+            sloth.xdgMusicDir
+            sloth.xdgVideosDir
+            sloth.xdgPicturesDir
+          ];
+          bind.ro = [
+            "/sys/bus/pci"
+            [
+              "${config.app.package}/lib/firefox"
+              "/app/etc/firefox"
+            ]
+
+            # ================ for browserpass extension ===============================
+            "/etc/gnupg"
+            (sloth.concat' sloth.homeDir "/.gnupg") # gpg's config
+            (sloth.concat' sloth.homeDir "/.local/share/password-store") # my secrets
+            (sloth.concat' sloth.runtimeDir "/gnupg") # for access gpg-agent socket
+
+            # Unsure
+            (sloth.concat' sloth.xdgConfigHome "/dconf")
+          ];
+
+          sockets = {
+            x11 = false;
+            wayland = true;
+            pipewire = true;
+          };
+        };
+      };
+  };
+  exePath = lib.getExe wrapped.config.script;
+in
+buildEnv {
+  inherit (wrapped.config.script) name meta passthru;
+  paths = [
+    wrapped.config.script
+    (makeDesktopItem {
+      name = appId;
+      desktopName = "Firefox";
+      genericName = "Firefox Boxed";
+      comment = "Firefox Browser";
+      exec = "${exePath} %U";
+      terminal = false;
+      icon = "firefox";
+      startupNotify = true;
+      startupWMClass = "firefox";
+      type = "Application";
+      categories = [
+        "Network"
+        "WebBrowser"
+      ];
+      mimeTypes = [
+        "text/html"
+        "text/xml"
+        "application/xhtml+xml"
+        "application/vnd.mozilla.xul+xml"
+        "x-scheme-handler/http"
+        "x-scheme-handler/https"
+      ];
+
+      actions = {
+        new-private-window = {
+          name = "New Private Window";
+          exec = "${exePath} --private-window %U";
+        };
+        new-window = {
+          name = "New Window";
+          exec = "${exePath} --new-window %U";
+        };
+        profile-manager-window = {
+          name = "Profile Manager";
+          exec = "${exePath} --ProfileManager";
+        };
+      };
+
+      extraConfig = {
+        X-Flatpak = appId;
+      };
+    })
+  ];
+}

hardening/nixpaks/modules/common.nix

@@ -0,0 +1,234 @@
+# https://github.com/mnixry/nixos-config/blob/74913c2b90d06e31170bbbaa0074f915721da224/desktop/packages/nixpaks-common.nix
+# https://github.com/Kraftland/portable/blob/09c4a4227538a3f42de208a6ecbdc938ac9c00dd/portable.sh
+# https://flatpak.github.io/xdg-desktop-portal/docs/api-reference.html
+{
+  lib,
+  sloth,
+  config,
+  ...
+}:
+let
+  inherit (config.flatpak) appId;
+in
+{
+  config = {
+    # list all dbus services:
+    #   ls -al /run/current-system/sw/share/dbus-1/services/
+    #   ls -al /etc/profiles/per-user/ryan/share/dbus-1/services/
+    dbus = {
+      # `--see`: The bus name can be enumerated by the application.
+      # `--talk`: The application can send messages to, and receive replies and signals from, the bus name.
+      # `--own`: The application can own the bus name
+      policies = {
+        "${appId}" = "own";
+        "${appId}.*" = "own";
+        "org.freedesktop.DBus" = "talk";
+        "ca.desrt.dconf" = "talk";
+        "org.freedesktop.appearance" = "talk";
+        "org.freedesktop.appearance.*" = "talk";
+      }
+      // (builtins.listToAttrs (
+        map (id: lib.nameValuePair "org.kde.StatusNotifierItem-${toString id}-1" "own") (
+          lib.lists.range 2 29
+        )
+      ))
+      // {
+        # --- MPRIS Media Control ---
+        # Allows the app to register as a media player. These are derived from the appID.
+        "org.mpris.MediaPlayer2.${appId}" = "own";
+        "org.mpris.MediaPlayer2.${appId}.*" = "own";
+        "org.mpris.MediaPlayer2.${lib.lists.last (lib.strings.splitString "." appId)}" = "own";
+        "org.mpris.MediaPlayer2.${lib.lists.last (lib.strings.splitString "." appId)}.*" = "own";
+
+        # --- General Desktop Integration ---
+        "com.canonical.AppMenu.Registrar" = "talk"; # For Ubuntu AppMenu
+        "org.freedesktop.FileManager1" = "talk";
+        "org.freedesktop.Notifications" = "talk";
+        "org.kde.StatusNotifierWatcher" = "talk";
+        "org.gnome.Shell.Screencast" = "talk";
+
+        # --- Accessibility (a11y) 无障碍服务 ---
+        "org.a11y.Bus" = "see";
+
+        # --- Portal Access ---
+        # "org.freedesktop.portal.*" = "talk";
+        "org.freedesktop.portal.Documents" = "talk";
+        "org.freedesktop.portal.FileTransfer" = "talk";
+        "org.freedesktop.portal.FileTransfer.*" = "talk";
+        "org.freedesktop.portal.Notification" = "talk";
+        "org.freedesktop.portal.OpenURI" = "talk";
+        "org.freedesktop.portal.OpenURI.OpenFile" = "talk";
+        "org.freedesktop.portal.OpenURI.OpenURI" = "talk";
+        "org.freedesktop.portal.Print" = "talk";
+        "org.freedesktop.portal.Request" = "see";
+
+        # --- Input Method Portals ---
+        "org.freedesktop.portal.Fcitx" = "talk";
+        "org.freedesktop.portal.Fcitx.*" = "talk";
+        "org.freedesktop.portal.IBus" = "talk";
+        "org.freedesktop.portal.IBus.*" = "talk";
+      };
+      # '--call' rules permit specific method calls on D-Bus interfaces.
+      rules.call = {
+        # --- Accessibility (a11y) 无障碍服务 ---
+        "org.a11y.Bus" = [
+          "org.a11y.Bus.GetAddress@/org/a11y/bus"
+          "org.freedesktop.DBus.Properties.Get@/org/a11y/bus"
+        ];
+
+        # --- General Portal Rules ---
+        "org.freedesktop.FileManager1" = [ "*" ];
+        "org.freedesktop.Notifications.*" = [ "*" ];
+        "org.freedesktop.portal.Documents" = [ "*" ];
+        "org.freedesktop.portal.FileTransfer" = [ "*" ];
+        "org.freedesktop.portal.FileTransfer.*" = [ "*" ];
+        "org.freedesktop.portal.Fcitx" = [ "*" ];
+        "org.freedesktop.portal.Fcitx.*" = [ "*" ];
+        "org.freedesktop.portal.IBus" = [ "*" ];
+        "org.freedesktop.portal.IBus.*" = [ "*" ];
+        "org.freedesktop.portal.Notification" = [ "*" ];
+        "org.freedesktop.portal.OpenURI" = [ "*" ];
+        "org.freedesktop.portal.OpenURI.OpenFile" = [ "*" ];
+        "org.freedesktop.portal.OpenURI.OpenURI" = [ "*" ];
+        "org.freedesktop.portal.Print" = [ "*" ];
+        "org.freedesktop.portal.Request" = [ "*" ];
+
+        # --- Main Desktop Portal Interface ---
+        # A comprehensive list of permissions for interacting with the desktop environment.
+        "org.freedesktop.portal.Desktop" = [
+          # Properties & Settings
+          "org.freedesktop.DBus.Properties.GetAll"
+          "org.freedesktop.DBus.Properties.Get@/org/freedesktop/portal/desktop"
+          "org.freedesktop.portal.Session.Close"
+          "org.freedesktop.portal.Settings.ReadAll"
+          "org.freedesktop.portal.Settings.Read"
+          "org.freedesktop.portal.Account.GetUserInformation"
+
+          # Network & Proxy
+          "org.freedesktop.portal.NetworkMonitor"
+          "org.freedesktop.portal.NetworkMonitor.*"
+          "org.freedesktop.portal.ProxyResolver.Lookup"
+          "org.freedesktop.portal.ProxyResolver.Lookup.*"
+
+          # Screenshot / Screen Capture & Sharing
+          "org.freedesktop.portal.ScreenCast"
+          "org.freedesktop.portal.ScreenCast.*"
+          "org.freedesktop.portal.Screenshot"
+          "org.freedesktop.portal.Screenshot.Screenshot"
+
+          # Device Access(Camera / USB)
+          "org.freedesktop.portal.Camera"
+          "org.freedesktop.portal.Camera.*"
+          "org.freedesktop.portal.Usb"
+          "org.freedesktop.portal.Usb.*"
+
+          # Remote Desktop
+          "org.freedesktop.portal.RemoteDesktop"
+          "org.freedesktop.portal.RemoteDesktop.*"
+
+          # File Operations
+          "org.freedesktop.portal.Documents"
+          "org.freedesktop.portal.Documents.*"
+          "org.freedesktop.portal.FileChooser"
+          "org.freedesktop.portal.FileChooser.*"
+          "org.freedesktop.portal.FileTransfer"
+          "org.freedesktop.portal.FileTransfer.*"
+
+          # Notifications & Printing
+          "org.freedesktop.portal.Notification"
+          "org.freedesktop.portal.Notification.*"
+          "org.freedesktop.portal.Print"
+          "org.freedesktop.portal.Print.*"
+
+          # Open/Launch Handlers
+          "org.freedesktop.portal.OpenURI"
+          "org.freedesktop.portal.OpenURI.*"
+          "org.freedesktop.portal.Email.ComposeEmail"
+
+          # Input Methods
+          "org.freedesktop.portal.Fcitx"
+          "org.freedesktop.portal.Fcitx.*"
+          "org.freedesktop.portal.IBus"
+          "org.freedesktop.portal.IBus.*"
+
+          # Secrets (Keyring)
+          "org.freedesktop.portal.Secret"
+          "org.freedesktop.portal.Secret.RetrieveSecret"
+
+          # Get/Update GlobalShortcuts
+          # "org.freedesktop.portal.GlobalShortcuts"
+          # "org.freedesktop.portal.GlobalShortcuts.*"
+
+          # -- get the user's location
+          # "org.freedesktop.portal.Location"
+          # "org.freedesktop.portal.Location.*"
+
+          # -- inhibit the user session from ending, suspending, idling or getting switched away.
+          "org.freedesktop.portal.Inhibit"
+          "org.freedesktop.portal.Inhibit.*"
+
+          # Generic Request Fallback
+          "org.freedesktop.portal.Request"
+        ];
+      };
+
+      # 'broadcast' rules permit receiving signals from D-Bus names.
+      rules.broadcast = {
+        "org.freedesktop.portal.*" = [ "@/org/freedesktop/portal/*" ];
+      };
+      args = [
+        "--filter"
+        "--sloppy-names"
+        "--log"
+      ];
+    };
+
+    etc.sslCertificates.enable = true;
+    bubblewrap = {
+      network = lib.mkDefault true;
+      sockets = {
+        wayland = true;
+        pulse = true;
+      };
+
+      bind.rw = with sloth; [
+        [
+          (mkdir appDataDir)
+          xdgDataHome
+        ]
+        [
+          (mkdir appConfigDir)
+          xdgConfigHome
+        ]
+        [
+          (mkdir appCacheDir)
+          xdgCacheHome
+        ]
+
+        (sloth.concat [
+          sloth.runtimeDir
+          "/"
+          (sloth.envOr "WAYLAND_DISPLAY" "no")
+        ])
+        (sloth.concat' sloth.runtimeDir "/at-spi/bus")
+        (sloth.concat' sloth.runtimeDir "/gvfsd")
+        (sloth.concat' sloth.runtimeDir "/dconf")
+
+        (sloth.concat' sloth.xdgCacheHome "/fontconfig")
+        (sloth.concat' sloth.xdgCacheHome "/mesa_shader_cache")
+        (sloth.concat' sloth.xdgCacheHome "/mesa_shader_cache_db")
+        (sloth.concat' sloth.xdgCacheHome "/radv_builtin_shaders")
+      ];
+      bind.ro = [
+        (sloth.concat' sloth.runtimeDir "/doc")
+        (sloth.concat' sloth.xdgConfigHome "/kdeglobals")
+        (sloth.concat' sloth.xdgConfigHome "/gtk-2.0")
+        (sloth.concat' sloth.xdgConfigHome "/gtk-3.0")
+        (sloth.concat' sloth.xdgConfigHome "/gtk-4.0")
+        (sloth.concat' sloth.xdgConfigHome "/fontconfig")
+        (sloth.concat' sloth.xdgConfigHome "/dconf")
+      ];
+      bind.dev = [ "/dev/shm" ] ++ (map (id: "/dev/video${toString id}") (lib.lists.range 0 9));
+    };
+  };
+}

hardening/nixpaks/modules/gui-base.nix

@@ -0,0 +1,102 @@
+# https://github.com/nixpak/pkgs/blob/master/pkgs/modules/gui-base.nix
+{
+  config,
+  lib,
+  pkgs,
+  sloth,
+  ...
+}:
+let
+  envSuffix = envKey: suffix: sloth.concat' (sloth.env envKey) suffix;
+  # cursor & icon's theme should be the same as the host's one.
+  cursorTheme = pkgs.bibata-cursors;
+  iconTheme = pkgs.papirus-icon-theme;
+in
+{
+  config = {
+    dbus.policies = {
+      "${config.flatpak.appId}" = "own";
+      # we add other policies in ./common.nix
+    };
+    # https://github.com/nixpak/nixpak/blob/master/modules/gpu.nix
+    # 1. bind readonly - /run/opengl-driver
+    # 2. bind device   - /dev/dri
+    gpu = {
+      enable = lib.mkDefault true;
+      provider = "nixos";
+      bundlePackage = pkgs.mesa.drivers; # for amd & intel
+    };
+    # https://github.com/nixpak/nixpak/blob/master/modules/gui/fonts.nix
+    # it works not well, bind system's /etc/fonts directly instead
+    fonts.enable = false;
+    # https://github.com/nixpak/nixpak/blob/master/modules/locale.nix
+    locale.enable = true;
+    bubblewrap = {
+      network = lib.mkDefault false;
+      bind.rw = [
+        [
+          (envSuffix "HOME" "/.var/app/${config.flatpak.appId}/cache")
+          sloth.xdgCacheHome
+        ]
+        (sloth.concat' sloth.xdgCacheHome "/fontconfig")
+        (sloth.concat' sloth.xdgCacheHome "/mesa_shader_cache")
+
+        (sloth.concat [
+          (sloth.env "XDG_RUNTIME_DIR")
+          "/"
+          (sloth.envOr "WAYLAND_DISPLAY" "no")
+        ])
+
+        (envSuffix "XDG_RUNTIME_DIR" "/at-spi/bus")
+        (envSuffix "XDG_RUNTIME_DIR" "/gvfsd")
+        (envSuffix "XDG_RUNTIME_DIR" "/pulse")
+
+        "/run/dbus"
+      ];
+      bind.ro = [
+        (envSuffix "XDG_RUNTIME_DIR" "/doc")
+        (sloth.concat' sloth.xdgConfigHome "/gtk-2.0")
+        (sloth.concat' sloth.xdgConfigHome "/gtk-3.0")
+        (sloth.concat' sloth.xdgConfigHome "/gtk-4.0")
+        (sloth.concat' sloth.xdgConfigHome "/fontconfig")
+
+        "/etc/fonts" # for fontconfig
+        "/etc/localtime" # this is a symlink to /etc/zoneinfo/xxx
+        "/etc/zoneinfo"
+
+        # Fix: libEGL warning: egl: failed to create dri2 screen
+        "/etc/egl"
+        "/etc/static/egl"
+      ];
+      bind.dev = [
+        "/dev/shm" # Shared Memory
+
+        # seems required when using nvidia as primary gpu
+        "/dev/nvidia0"
+        "/dev/nvidiactl"
+        "/dev/nvidia-modeset"
+        "/dev/nvidia-uvm"
+      ];
+
+      tmpfs = [
+        "/tmp"
+      ];
+
+      env = {
+        XDG_DATA_DIRS = lib.mkForce (
+          lib.makeSearchPath "share" [
+            iconTheme
+            cursorTheme
+            pkgs.shared-mime-info
+          ]
+        );
+        XCURSOR_PATH = lib.mkForce (
+          lib.concatStringsSep ":" [
+            "${cursorTheme}/share/icons"
+            "${cursorTheme}/share/pixmaps"
+          ]
+        );
+      };
+    };
+  };
+}

hardening/nixpaks/modules/network.nix

@@ -0,0 +1,8 @@
+# https://github.com/nixpak/pkgs/blob/master/pkgs/modules/network.nix
+{
+  etc.sslCertificates.enable = true;
+  bubblewrap = {
+    bind.ro = [ "/etc/resolv.conf" ];
+    network = true;
+  };
+}

hardening/nixpaks/qq.nix

@@ -0,0 +1,79 @@
+# Refer:
+# - Flatpak manifest's docs:
+#   - https://docs.flatpak.org/en/latest/manifests.html
+#   - https://docs.flatpak.org/en/latest/sandbox-permissions.html
+# - QQ's flatpak manifest: https://github.com/flathub/com.qq.QQ/blob/master/com.qq.QQ.yaml
+{
+  lib,
+  qq,
+  mkNixPak,
+  buildEnv,
+  makeDesktopItem,
+  ...
+}:
+
+let
+  appId = "com.qq.QQ";
+
+  wrapped = mkNixPak {
+    config =
+      { sloth, ... }:
+      {
+        app = {
+          package = qq;
+          binPath = "bin/qq";
+        };
+        flatpak.appId = appId;
+
+        imports = [
+          ./modules/gui-base.nix
+          ./modules/network.nix
+          ./modules/common.nix
+        ];
+
+        bubblewrap = {
+          # To trace all the home files QQ accesses, you can use the following nushell command:
+          #   just trace-access qq
+          # See the Justfile in the root of this repository for more information.
+          bind.rw = [
+            sloth.xdgDocumentsDir
+            sloth.xdgDownloadDir
+            sloth.xdgMusicDir
+            sloth.xdgVideosDir
+            sloth.xdgPicturesDir
+          ];
+          sockets = {
+            x11 = false;
+            wayland = true;
+            pipewire = true;
+          };
+        };
+      };
+  };
+  exePath = lib.getExe wrapped.config.script;
+in
+buildEnv {
+  inherit (wrapped.config.script) name meta passthru;
+  paths = [
+    wrapped.config.script
+    (makeDesktopItem {
+      name = appId;
+      desktopName = "QQ";
+      genericName = "QQ Boxed";
+      comment = "Tencent QQ, also known as QQ, is an instant messaging software service and web portal developed by the Chinese technology company Tencent.";
+      exec = "${exePath} %U";
+      terminal = false;
+      icon = "${qq}/share/icons/hicolor/512x512/apps/qq.png";
+      startupNotify = true;
+      startupWMClass = "QQ";
+      type = "Application";
+      categories = [
+        "InstantMessaging"
+        "Network"
+      ];
+      extraConfig = {
+        X-Flatpak = appId;
+      };
+    })
+  ];
+}

hardening/nixpaks/telegram-desktop.nix

@@ -0,0 +1,101 @@
+{
+  lib,
+  telegram-desktop,
+  buildEnv,
+  mkNixPak,
+  makeDesktopItem,
+  ...
+}:
+let
+  appId = "org.telegram.desktop";
+  wrapped = mkNixPak {
+    config =
+      { sloth, ... }:
+      {
+        imports = [
+          ./modules/gui-base.nix
+          ./modules/network.nix
+          ./modules/common.nix
+        ];
+        app.package = telegram-desktop;
+        flatpak = {
+          appId = appId;
+        };
+        dbus = {
+          enable = true;
+          policies = {
+            "com.canonical.indicator.application" = "talk";
+            "org.ayatana.indicator.application" = "talk";
+            "org.sigxcpu.Feedback" = "talk";
+          };
+        };
+
+        bubblewrap = {
+          bind.rw = [
+            sloth.xdgDocumentsDir
+            sloth.xdgDownloadDir
+            sloth.xdgMusicDir
+            sloth.xdgVideosDir
+            sloth.xdgPicturesDir
+          ];
+          sockets = {
+            x11 = false;
+            wayland = true;
+            pipewire = true;
+          };
+        };
+      };
+  };
+  exePath = lib.getExe wrapped.config.script;
+in
+buildEnv {
+  inherit (wrapped.config.script) name meta passthru;
+  paths = [
+    wrapped.config.script
+    (makeDesktopItem {
+      name = appId;
+      desktopName = "Telegram";
+      comment = "New era of messaging";
+      tryExec = "${exePath}";
+      exec = "${exePath} -- %u";
+      icon = appId;
+      startupNotify = true;
+      startupWMClass = appId;
+      terminal = false;
+      type = "Application";
+      categories = [
+        "Chat"
+        "Network"
+        "InstantMessaging"
+        "Qt"
+      ];
+      mimeTypes = [
+        "x-scheme-handler/tg"
+        "x-scheme-handler/tonsite"
+      ];
+      keywords = [
+        "tg"
+        "chat"
+        "im"
+        "messaging"
+        "messenger"
+        "sms"
+        "tdesktop"
+      ];
+      actions = {
+        quit = {
+          name = "Quit Telegram";
+          exec = "${exePath} -quit";
+          icon = "application-exit";
+        };
+      };
+      extraConfig = {
+        X-Flatpak = appId;
+        DBusActivatable = "true";
+        SingleMainWindow = "true";
+        X-GNOME-UsesNotifications = "true";
+        X-GNOME-SingleWindow = "true";
+      };
+    })
+  ];
+}

hardening/profiles/default.nix

@@ -0,0 +1,10 @@
+{ modulesPath, ... }:
+{
+  imports = [
+    (modulesPath + "/profiles/hardened.nix")
+  ];
+
+  # disable coredump that could be exploited later
+  # and also slow down the system when something crash
+  systemd.coredump.enable = false;
+}

home/README.md

@@ -1,6 +1,56 @@
 # Home Manager's Submodules
 
-1. `base`: The base module that is suitable for both Linux and macOS.
+This directory contains all Home Manager configurations organized by platform and functionality.
-2. `linux`: Linux-specific configuration.
-3. `darwin`: macOS-specific configuration.
 
+## Current Structure
+
+```
+home/
+├── base/              # Cross-platform home manager configurations
+│   ├── core/          # Essential applications and settings
+│   │   ├── editors/   # Editor configurations (Neovim, Helix)
+│   │   ├── shells/    # Shell configurations (Nushell, Zellij)
+│   │   └── ...
+│   ├── gui/           # GUI applications and desktop settings
+│   │   ├── terminal/  # Terminal emulators (Kitty, Alacritty, etc.)
+│   │   └── ...
+│   ├── tui/           # Terminal/TUI applications
+│   │   ├── editors/   # Heavy editor/tooling pkgs only (`packages.nix`; core editors live under `core/editors`)
+│   │   ├── encryption/ # GPG, password-store, etc.
+│   │   └── ...
+│   └── home.nix       # Main home manager entry point
+├── linux/             # Linux-specific home manager configurations
+│   ├── base/          # Linux base configurations
+│   ├── gui/           # Linux GUI applications
+│   │   ├── niri/      # Niri window manager
+│   │   └── ...
+│   ├── editors/       # Linux-specific editors
+│   └── ...
+├── hosts/             # Host-specific home manager entry modules
+│   ├── linux/         # Linux host home modules (ai, shoukei, k3s-*, etc.)
+│   └── darwin/        # macOS host home modules (fern, frieren)
+└── darwin/            # macOS-specific home manager configurations
+    ├── aerospace/     # macOS window manager
+    ├── proxy/         # Proxy configurations
+    └── ...
+```
+
+## Module Overview
+
+1. **base**: The base module suitable for both Linux and macOS
+   - Cross-platform applications and settings
+   - Shared configurations for editors, shells, and essential tools
+
+2. **linux**: Linux-specific configuration
+   - Desktop environments (Noctalia Shell, Niri compositor)
+   - Linux-specific GUI applications
+   - System integration tools
+
+3. **darwin**: macOS-specific configuration
+   - macOS applications and services
+   - Platform-specific integrations (Aerospace, Squirrel, etc.)
+
+4. **hosts**: Host entry modules for Home Manager
+   - Each output should reference only one host home module file
+   - Host modules are responsible for importing shared stacks (`home/linux/*` or `home/darwin`) and
+     applying host overrides

home/base/README.md

@@ -1,6 +1,64 @@
 # Home Manager's Base Submodules
 
-2. `server`: Configuration which is suitable for both servers and desktops.
+This directory contains cross-platform base configurations that are shared between Linux and Darwin
-1. `desktop`: Configuration for desktop environments, such as Hyprland, I3, etc.
+systems.
-    1. it import `server` as its submodule.
 
+## Configuration Structure
+
+### Core System
+
+- **core/**: Essential cross-platform configurations
+  - **core.nix**: Minimal home-manager configuration
+  - **shells/**: Shell configurations (bash, zsh, fish, nu)
+  - **editors/**: Helix + Neovim (Home Manager) and usage docs (`README.md` per editor)
+  - **btop.nix**: System monitoring tools
+  - **git.nix**: Git configuration and aliases
+  - **npm.nix**: Node.js package management
+  - **pip.nix**: Python package management
+  - **starship.nix**: Cross-shell prompt configuration
+  - **theme.nix**: Color schemes and theming
+  - **yazi.nix**: Terminal file manager configuration
+  - **zellij/**: Terminal multiplexer with custom layouts
+
+### Desktop Environment
+
+- **gui/**: Cross-platform GUI applications and configurations
+  - **dev-tools.nix**: Development tools and IDEs
+  - **media.nix**: Media players and utilities
+  - **terminal/**: Terminal emulator configurations
+    - **alacritty/**: Alacritty terminal
+    - **kitty/**: Kitty terminal
+    - **foot/**: Foot terminal (Linux)
+    - **ghostty/**: Ghostty terminal
+
+### Terminal Interface
+
+- **tui/**: Terminal-based interface configurations
+  - **cloud/**: Cloud development tools (Terraform, etc.)
+  - **container.nix**: Container tools (Docker, Podman)
+  - **dev-tools.nix**: Terminal-based development tools
+  - **editors/**: Extra terminal editor Nix (see `core/editors/` for docs and baseline enables)
+  - **encryption/**: Encryption and security tools
+  - **gpg/**: GPG key management
+  - **password-store/**: Password management with pass
+  - **shell.nix**: Shell environment configurations
+  - **ssh/**: SSH configuration and management
+  - **zellij/**: Terminal workspace management
+
+### System Management
+
+- **home.nix**: Main home manager configuration file
+
+## Platform Compatibility
+
+All configurations in this directory are designed to work across:
+
+- **Linux**: All distributions with Nix and Home Manager
+- **macOS**: Darwin systems with Home Manager
+- **WSL**: Windows Subsystem for Linux
+
+## Usage
+
+These base configurations provide the foundation for both Linux and Darwin systems, ensuring
+consistent environments across different platforms while allowing for platform-specific
+customizations.

home/base/core/btop.nix

@@ -0,0 +1,9 @@
+{
+  # replacement of htop/nmon
+  programs.btop = {
+    enable = true;
+    settings = {
+      theme_background = false; # make btop transparent
+    };
+  };
+}

home/base/core/core.nix

@@ -0,0 +1,99 @@
+{ pkgs, ... }:
+{
+  home.packages = with pkgs; [
+    # nix related
+    #
+    # it provides the command `nom` works just like `nix
+    # with more details log output
+    nix-output-monitor
+    hydra-check # check hydra(nix's build farm) for the build status of a package
+    nix-index # A small utility to index nix store paths
+    nix-init # generate nix derivation from url
+    # https://github.com/nix-community/nix-melt
+    nix-melt # A TUI flake.lock viewer
+    # https://github.com/utdemir/nix-tree
+    nix-tree # A TUI to visualize the dependency graph of a nix derivation
+
+    # misc
+    cowsay
+    gnupg
+    caddy # A webserver with automatic HTTPS via Let's Encrypt(replacement of nginx)
+    # A fast and polyglot tool for code searching, linting, rewriting at large scale
+    # supported languages: only some mainstream languages currently(do not support nix/nginx/yaml/toml/...)
+    ast-grep
+
+    # other core cli tools are installed at system-level
+  ];
+
+  # A modern replacement for ‘ls’
+  # useful in bash/zsh prompt, not in nushell.
+  programs.eza = {
+    enable = true;
+    # do not enable aliases in nushell!
+    enableNushellIntegration = false;
+    git = true;
+    icons = "auto";
+  };
+
+  # a cat(1) clone with syntax highlighting and Git integration.
+  programs.bat = {
+    enable = true;
+    config = {
+      pager = "less -FR";
+    };
+  };
+
+  # A command-line fuzzy finder
+  programs.fzf.enable = true;
+
+  # very fast version of tldr in Rust
+  programs.tealdeer = {
+    enable = true;
+    enableAutoUpdates = true;
+    settings = {
+      display = {
+        compact = false;
+        use_pager = true;
+      };
+      updates = {
+        auto_update = false;
+        auto_update_interval_hours = 720;
+      };
+    };
+  };
+
+  # zoxide is a smarter cd command, inspired by z and autojump.
+  # It remembers which directories you use most frequently,
+  # so you can "jump" to them in just a few keystrokes.
+  # zoxide works on all major shells.
+  #
+  #   z foo              # cd into highest ranked directory matching foo
+  #   z foo bar          # cd into highest ranked directory matching foo and bar
+  #   z foo /            # cd into a subdirectory starting with foo
+  #
+  #   z ~/foo            # z also works like a regular cd command
+  #   z foo/             # cd into relative path
+  #   z ..               # cd one level up
+  #   z -                # cd into previous directory
+  #
+  #   zi foo             # cd with interactive selection (using fzf)
+  #
+  #   z foo<SPACE><TAB>  # show interactive completions (zoxide v0.8.0+, bash 4.4+/fish/zsh only)
+  programs.zoxide = {
+    enable = true;
+    enableBashIntegration = true;
+    enableZshIntegration = true;
+    enableNushellIntegration = true;
+  };
+
+  # Atuin replaces your existing shell history with a SQLite database,
+  # and records additional context for your commands.
+  # Additionally, it provides optional and fully encrypted
+  # synchronisation of your history between machines, via an Atuin server.
+  programs.atuin = {
+    enable = true;
+    enableBashIntegration = true;
+    enableZshIntegration = true;
+    enableNushellIntegration = true;
+  };
+}

home/base/core/default.nix

@@ -1,3 +1,4 @@
-{mylib, ...}: {
+{ mylib, ... }:
+{
   imports = mylib.scanPaths ./.;
 }

home/base/core/editors/Glossary.md

@@ -0,0 +1,73 @@
+# Editors Glossary
+
+### LSP - Language Server Protocol
+
+> https://en.wikipedia.org/wiki/Language_Server_Protocol
+
+> https://langserver.org/
+
+The Language Server Protocol (LSP) is an open, JSON-RPC-based protocol for use between source code
+editors or integrated development environments (IDEs) and servers that provide programming
+language-specific features like:
+
+- motions such as go-to-definition, find-references, hover.
+- **code completion**
+- **marking of warnings and errors**
+- **refactoring routines**
+- syntax highlighting (use Tree-sitter instead)
+- code formatting (use a dedicated formatter instead)
+
+The goal of the protocol is to allow programming language support to be implemented and distributed
+independently of any given editor or IDE.
+
+LSP was originally developed for Microsoft Visual Studio Code and is now an open standard. In the
+early 2020s LSP quickly became a "norm" for language intelligence tools providers.
+
+### Tree-sitter
+
+> https://tree-sitter.github.io/tree-sitter/
+
+> https://www.reddit.com/r/neovim/comments/1109wgr/treesitter_vs_lsp_differences_ans_overlap/
+
+Tree-sitter is a parser generator tool and an **incremental parsing** library. It can build a
+concrete syntax tree for a source file and efficiently update the syntax tree as the source file is
+edited.
+
+It is used by many editors and IDEs to provide:
+
+- **syntax highlighting**
+- **indentation**
+- **creating foldable code regions**
+- **Incremental selection**
+- **simple refactoring in a single file**
+  - such as join/split lines, structural editing, cursor motion, etc.
+
+**Treesitter process each file independently**, and it is not aware of the semantics of your code.
+For example, it does not know does a function/variable really exist, or what is the type/return-type
+of a variable. This is where LSP comes in.
+
+The LSP server parses the code much more deeply and it **not only parses a single file but your
+whole project**. So, the LSP server will know whether a function/variable does exist with the same
+type/return-type. If it does not, it will mark it as an error.
+
+**LSP does understand the code semantically, while Treesitter only cares about correct syntax**.
+
+#### LSP vs Tree-sitter
+
+- Tree-sitter: lightweight, fast, but limited knowledge of your code. mainly used for **syntax
+  highlighting, indentation, and folding/refactoring in a single file**.
+- LSP: heavy and slow on large projects, but it has a deep understanding of your code. mainly used
+  for **code completion, refactoring in the projects, errors/warnings, and other semantic-aware
+  features**.
+
+### Formatter vs Linter
+
+Linting is distinct from Formatting because:
+
+1. **formatting** only restructures how code appears.
+   1. `prettier` is a popular formatter.
+1. **linting** analyzes how the code runs and detects errors, it may also suggest improvements such
+   as replace `var` with `let` or `const`.
+
+Formatters and Linters process each file independently, they do not need to know about other files
+in the project.

home/base/core/editors/README.md

@@ -0,0 +1,26 @@
+# Editors
+
+Shared editor configuration and **usage notes** for terminal-focused editing.
+
+## Roles
+
+- **Helix** (`helix/`): Primary TUI editor — batteries-included, small attack surface. `$EDITOR` /
+  `$VISUAL` default to `hx` (`session-env.nix`).
+- **Neovim** (`neovim/`): Backup editor — classic vim-style workflow and `:help` when needed. For
+  privileged edits (`sudoedit`) and other security-sensitive inputs, `$SUDO_EDITOR` is
+  `nvim --clean`; use that explicitly when `$EDITOR` must avoid user config/plugins.
+
+Terminal layout and files: **Zellij** and **Yazi** live under `core/zellij/` and `core/yazi.nix`
+(not in this folder).
+
+## Docs
+
+- [`helix/README.md`](./helix/README.md) — Helix basics, cheatsheet, official doc links, Helix vs
+  Neovim notes.
+- [`neovim/README.md`](./neovim/README.md) — Vim/Neovim basics, cheatsheet, and official doc links.
+
+Nix modules in `helix/` and `neovim/` enable each editor via Home Manager. Language servers and
+other heavy editor-related packages are listed in
+[`../../tui/editors/`](../../tui/editors/README.md) (imported from `home/base/tui`).
+
+Editor terminology (LSP, tree-sitter): [`Glossary.md`](./Glossary.md).

home/base/core/editors/default.nix

@@ -1,3 +1,4 @@
-{mylib, ...}: {
+{ mylib, ... }:
+{
   imports = mylib.scanPaths ./.;
 }

home/base/core/editors/helix/README.md

@@ -0,0 +1,209 @@
+# Helix (primary) — Kakoune-style usage
+
+Neovim is powerful and has a very active community. This config still enables Neovim as a **backup**
+editor (vim-style muscle memory, `:help`, and occasional plugin workflows).
+
+Helix is the **primary** TUI editor here: opinionated, batteries-included (LSP, tree-sitter, picker,
+multi-cursor, surround), and a smaller moving part than a large Neovim plugin stack.
+
+## Tips
+
+1. This flake sets `$EDITOR` / `$VISUAL` to **`hx`** by default. For security-sensitive edits
+   (privileged files, unfamiliar binaries, secrets), prefer **`nvim --clean`** — `$SUDO_EDITOR` uses
+   it so `sudoedit` stays minimal; invoke it yourself in other trust-boundary cases.
+1. Helix is **selection-first** (like Kakoune): extend a selection, then run an action (`d`, `c`,
+   `y`, …). A lone cursor is a zero-width selection.
+1. Read the official docs before reinventing workflows:
+   1. <https://docs.helix-editor.com/> — documentation home (links to usage, keymap, configuration).
+   1. <https://docs.helix-editor.com/usage.html> — modes, buffers, motions overview.
+   1. <https://docs.helix-editor.com/keymap.html> — full default keybindings.
+   1. <https://docs.helix-editor.com/commands.html> — typable commands (`:` prompt).
+   1. <https://docs.helix-editor.com/configuration.html> — `config.toml`, themes, remaps.
+   1. <https://github.com/helix-editor/helix/wiki> — install tips, language servers, FAQ.
+1. Prefer **Zellij** for shells and panes; use **Helix** for buffers and text.
+1. On large codebases, navigation is often **by picker** (`Space f`, symbols, workspace search) or
+   **by LSP** (`g` goto mode), complementing motion-based editing.
+1. After **git** operations (`checkout`, `merge`, `pull`, `rebase`) or whenever many files changed
+   on disk, run **`:reload-all`** (alias **`:rla`**) so every open buffer is refreshed from disk in
+   one step — much faster than revisiting each file or restarting Helix.
+
+## Tutorial
+
+Run `:tutor` inside Helix, or `hx --tutor` from the shell
+([tutor source](https://github.com/helix-editor/helix/blob/master/runtime/tutor)).
+
+## Helix cheatsheet (common keys)
+
+> Full reference: <https://docs.helix-editor.com/keymap.html>  
+> Typable commands: <https://docs.helix-editor.com/commands.html>
+
+### Terminal related
+
+Zellij shortcuts used often (same idea as in the Neovim notes):
+
+| Action                    | Zellij shortcut |
+| ------------------------- | --------------- |
+| Floating terminal         | `Ctrl + p + w`  |
+| Horizontal split terminal | `Ctrl + p + d`  |
+| Vertical split terminal   | `Ctrl + p + n`  |
+
+In Helix, `|` / `!` and variants pipe or insert shell output on selections (see **Changes**).
+
+This flake’s Helix Home Manager module keeps **almost all default keys**; the only remap is
+**`Ctrl+Shift+o`** → jump backward, because Zellij uses **`Ctrl+o`** for Session (see
+`home/base/core/editors/helix/default.nix`). For other Zellij clashes, use **locked mode**
+(`Ctrl+g`), **`:`** commands, or the built-in **`Space`** menu.
+
+### Command mode (`:`)
+
+> <https://docs.helix-editor.com/commands.html>
+
+| Action                 | Command examples                                                     |
+| ---------------------- | -------------------------------------------------------------------- |
+| Write / write all      | `:w` / `:wa`                                                         |
+| Quit view / quit all   | `:q` / `:qa` — add `!` to discard changes                            |
+| Write and quit         | `:wq`, `:x`                                                          |
+| Write all and quit all | `:wqa`, `:xa`                                                        |
+| Open file              | `:open path`, `:e path`                                              |
+| Next / previous buffer | `:bn` / `:bp` (also `gn` / `gp` in normal)                           |
+| Close buffer           | `:bc` (add `!` to force)                                             |
+| Reload from disk       | `:reload` (current buffer); `:reload-all` / **`:rla`** (all buffers) |
+| Change directory / pwd | `:cd` / `:pwd`                                                       |
+| Split open file        | `:vs path`, `:hs path`                                               |
+
+### Movement (normal mode)
+
+| Action                | Keys / notes                                        |
+| --------------------- | --------------------------------------------------- |
+| Arrow keys            | `h` `j` `k` `l`                                     |
+| Words                 | `w` `b` `e` — `W` `B` `E` for WORD-style            |
+| Find char / till char | `f` `F` `t` `T` (not limited to current line)       |
+| Line / file           | `Home` / `End`; `gg` start or goto line; `G` line   |
+| Half / full page      | `Ctrl-u` / `Ctrl-d`; `Ctrl-b` / `Ctrl-f`            |
+| Jumplist              | `Ctrl-o` back, `Ctrl-i` forward; `Ctrl-s` save spot |
+
+### Selection & changes
+
+| Action                 | Keys / notes                                                      |
+| ---------------------- | ----------------------------------------------------------------- |
+| Extend selections      | `v` select mode; motions extend instead of moving                 |
+| Line selection         | `x` extend line; `X` line bounds                                  |
+| Select all / regex     | `%`; `s` regex in selections; `S` split on regex                  |
+| Undo / redo            | `u` / `U`                                                         |
+| Delete / change / yank | `d` / `c` / `y` — acts on selection                               |
+| Paste                  | `p` / `P`; registers `"` …                                        |
+| Insert                 | `i` `a` `I` `A` `o` `O`                                           |
+| Indent / format        | `>` / `<`; `=` format (LSP)                                       |
+| Case                   | `~` toggle; lower/upper case via grave / `Alt-grave` (see keymap) |
+| Join lines             | `J`; `Alt-J` join keeping space                                   |
+
+### Search
+
+| Action               | Keys                                     |
+| -------------------- | ---------------------------------------- |
+| Search / reverse     | `/` / `?`                                |
+| Next / prev match    | `n` / `N`                                |
+| Selection as pattern | `*` (word bounds); `Alt-*` raw selection |
+
+Use **extend mode** (`v`) with `n` / `N` to add matches to multi-cursors
+([keymap](https://docs.helix-editor.com/keymap.html#select--extend-mode)).
+
+### Replace / multi-occur edits
+
+Helix has no vim-style `:%s` with preview. Typical patterns:
+
+- Select matches with `s` or search, then `c` to change all selections at once.
+- Workspace-wide search: `Space /` (global search picker).
+- Heavy refactors: external tools or another pane (see **Differences** below).
+
+### Goto mode (`g` then …)
+
+| Action               | Keys (after `g`) |
+| -------------------- | ---------------- |
+| File start / end     | `g` / `e`        |
+| Line start / end     | `h` / `l`        |
+| File / URL           | `f`              |
+| First non-whitespace | `s`              |
+| Definition / refs    | `d` / `r` (LSP)  |
+| Type / impl          | `y` / `i` (LSP)  |
+| Next / prev buffer   | `n` / `p`        |
+
+Also: `gd` / `gD` definition/declaration-style jumps where bound.
+
+### Match mode (`m` …)
+
+Surround and textobjects: see <https://docs.helix-editor.com/surround.html> and
+<https://docs.helix-editor.com/textobjects.html>. Matching bracket: `mm` (tree-sitter).
+
+### Window mode (`Ctrl-w` then …)
+
+| Action           | Keys            |
+| ---------------- | --------------- |
+| Next window      | `w`             |
+| Vertical split   | `v`             |
+| Horizontal split | `s`             |
+| Focus splits     | `h` `j` `k` `l` |
+| Close / only     | `q` / `o`       |
+
+### Space mode (`Space` then …)
+
+| Action               | Keys               |
+| -------------------- | ------------------ |
+| File picker (roots)  | `f`                |
+| File picker (cwd)    | `F`                |
+| Buffer picker        | `b`                |
+| Global search        | `/`                |
+| Command palette      | `?`                |
+| Hover docs (LSP)     | `k`                |
+| Symbols / workspace  | `s` / `S`          |
+| Diagnostics          | `d` / `D`          |
+| Clipboard yank/paste | `y` / `p` variants |
+
+Picker movement: <https://docs.helix-editor.com/pickers.html>.
+
+### Minor modes from normal
+
+| Mode        | Key       |
+| ----------- | --------- |
+| Command     | `:`       |
+| View scroll | `z` / `Z` |
+| Goto        | `g`       |
+| Match       | `m`       |
+| Window      | `Ctrl-w`  |
+
+Some bindings need an **LSP** or **tree-sitter** grammar; see notes on the keymap page.
+
+## Differences between Neovim and Helix
+
+1. Selecting first, then action.
+   1. Helix: delete 2 words: move/select with `w` … then `d`. You see the selection before the
+      action.
+   2. Neovim: delete 2 words: `d` then `2w`. No visual feedback before the action runs.
+1. Helix — modern built-in features: LSP, tree-sitter, fuzzy finder, multi-cursors, surround, and
+   more.
+   1. The same is available in Neovim, but usually via plugins you choose and maintain.
+1. Helix is built in Rust from scratch: smaller codebase, modern defaults. No VimScript, no Lua in
+   user config.
+   1. Neovim carries Vim heritage (VimScript) and Lua-heavy customization.
+1. Neovim has a huge plugin ecosystem.
+   1. Helix is newer; a stable plugin system is still evolving:
+      <https://github.com/helix-editor/helix/pull/8675>
+1. Neovim has an integrated terminal (similar in spirit to VS Code’s).
+   1. Helix does not ship one; use Zellij / tmux / terminal features instead.
+   1. <https://github.com/helix-editor/helix/issues/1976#issuecomment-1091074719>
+   1. <https://github.com/helix-editor/helix/pull/4649>
+1. Helix has no built-in tree panel; pair with **Yazi**, ranger, or Broot and open files from there.
+   1. A tree view may arrive with plugins later; many users rely on the file picker instead.
+1. Global substitution is weaker in Helix; run replacements in another pane (Zellij) or an external
+   tool when needed.
+   1. <https://github.com/helix-editor/helix/issues/196>
+   1. Neovim’s `:s` with preview remains strong for interactive refactors; external tools (e.g.
+      <https://github.com/ms-jpq/sad>) can fill gaps in Helix-centric flows.
+1. Complexity vs batteries-included tradeoffs:
+   <https://github.com/helix-editor/helix/discussions/6356>
+
+Using **Helix** (and Neovim when useful) inside **Yazi** and **Zellij** keeps editing, files, and
+panes explicit and scriptable — different from a single IDE window, but very composable.
+
+Helix nudges you away from reproducing VS Code/JetBrains inside one process; Neovim remains there
+when you want that depth.

home/base/core/editors/helix/default.nix

@@ -0,0 +1,120 @@
+{ pkgs, ... }:
+{
+  programs.helix = {
+    enable = true;
+    package = pkgs.helix;
+    settings = {
+      editor = {
+        # Display & cursor
+        line-number = "relative";
+        cursorline = true;
+        color-modes = true;
+        scrolloff = 8;
+
+        # use system clipboard by default
+        default-yank-register = "+";
+        # Wrap long lines to the viewport (word-wrap style; does not insert hard line endings)
+        soft-wrap = {
+          enable = true;
+        };
+
+        # Completion / formatting
+        auto-format = true;
+        preview-completion-insert = true;
+        completion-timeout = 5;
+        idle-timeout = 200;
+        end-of-line-diagnostics = "hint";
+
+        # Save to disk on focus loss and after idle (helps LSP see disk changes)
+        auto-save = {
+          focus-lost = true;
+          after-delay = {
+            enable = true;
+            timeout = 2000;
+          };
+        };
+
+        # LSP: inlay hints, signature help, progress / messages in status area
+        lsp = {
+          display-messages = true;
+          display-progress-messages = true;
+          display-inlay-hints = true;
+          auto-signature-help = true;
+        };
+
+        inline-diagnostics = {
+          cursor-line = "hint";
+          other-lines = "disable";
+        };
+
+        # Buffers tab strip, menu borders, status line layout
+        bufferline = "multiple";
+        popup-border = "menu";
+        statusline = {
+          left = [
+            "mode"
+            "spinner"
+            "version-control"
+            "file-name"
+            "read-only-indicator"
+            "file-modification-indicator"
+          ];
+          center = [ ];
+          right = [
+            "workspace-diagnostics"
+            "diagnostics"
+            "selections"
+            "position"
+            "position-percentage"
+            "file-type"
+            "file-encoding"
+            "file-line-ending"
+          ];
+          separator = "│";
+          diagnostics = [
+            "error"
+            "warning"
+            "info"
+          ];
+          workspace-diagnostics = [
+            "error"
+            "warning"
+          ];
+          mode = {
+            normal = "NORMAL";
+            insert = "INSERT";
+            select = "SELECT";
+          };
+        };
+
+        # Show dotfiles in picker (project-wide ignores still apply)
+        file-picker.hidden = false;
+
+        cursor-shape = {
+          insert = "bar";
+          normal = "block";
+          select = "underline";
+        };
+        indent-guides.render = true;
+      };
+
+      keys.normal = {
+        space.space = ":reload-all";
+        esc = [
+          "collapse_selection"
+          "keep_primary_selection"
+        ];
+        space.w = ":w";
+        space.q = ":q";
+
+        # useful vim keybindings
+        "$" = "goto_line_end";
+        "0" = "goto_line_start";
+
+        # Ctrl+o opens Zellij Session
+        "C-S-o" = "jump_backward";
+      };
+
+    };
+  };
+}

home/base/core/editors/neovim/README.md

@@ -0,0 +1,180 @@
+# Neovim (backup) — vim-style usage
+
+Primary day-to-day editing is **Helix**; this file is the **vim/Neovim** quick reference and doc
+pointers for when you reach for Neovim as a backup.
+
+## Tips
+
+1. Many motions already exist in vim — check vim/Neovim docs before adding plugins or reinventing
+   wheels.
+1. For deeper skill, read the official docs:
+   1. <https://vimhelp.org/> — vim help.
+   1. <https://neovim.io/doc/user/> — Neovim user manual.
+1. Prefer **Zellij** for shells and panes; use **Helix** or **Neovim** for buffers and text.
+1. Two powerful navigation modes on large codebases:
+   1. **By path** — when you know the tree layout.
+   1. **By content** — when you know what the code says.
+
+## Tutorial
+
+Type `:tutor` (or `:Tutor` in Neovim) for the built-in vim tutorial.
+
+## Vim cheatsheet (common keys)
+
+> For a fuller reference: <https://vimhelp.org/quickref.txt.html>
+
+Emacs Evil, Neovim, and vim share the motions below.
+
+### Terminal related
+
+Zellij shortcuts used often:
+
+| Action                    | Zellij shortcut |
+| ------------------------- | --------------- |
+| Floating terminal         | `Ctrl + p + w`  |
+| Horizontal split terminal | `Ctrl + p + d`  |
+| Vertical split terminal   | `Ctrl + p + n`  |
+| Run a shell command       | `!xxx`          |
+
+### File management
+
+> <https://neovim.io/doc/user/usr_22.html>  
+> <https://vimhelp.org/editing.txt.html>
+
+| Action                        | Command                                      |
+| ----------------------------- | -------------------------------------------- |
+| Save selection to a file      | `:w filename` (shows `:'<,'>w filename`)     |
+| Save and close current buffer | `:wq`                                        |
+| Save all buffers              | `:wa`                                        |
+| Save and close all buffers    | `:wqa`                                       |
+| Edit a file                   | `:e filename` (or `:e <TAB>` for completion) |
+| Browse files                  | `:Ex` or `:e .`                              |
+| Discard changes and reload    | `:e!`                                        |
+
+### Motion
+
+> <https://vimhelp.org/motion.txt.html>
+
+| Action                              | Command                                 |
+| ----------------------------------- | --------------------------------------- |
+| Start / end of buffer               | `gg` / `G`                              |
+| Go to line 5                        | `5gg` / `5G`                            |
+| Left / down / up / right            | `h` `j` `k` `l` (counts like `5j` work) |
+| Jump to matchpairs `()`, `{}`, `[]` | `%`                                     |
+| Start / end of line                 | `0` / `$`                               |
+| Sentence forward / backward         | `(` / `)`                               |
+| Paragraph forward / backward        | `{` / `}`                               |
+| Section forward / backward          | `[[` / `]]`                             |
+| Jump to marks                       | `'` + mark (Neovim may prompt)          |
+
+Text objects:
+
+- **Sentence**: ends at `.` `!` `?` plus line end or space/tab.
+- **Paragraph**: ends at a blank line.
+- **Section**: between section headers; `[[` / `]]` often stop at `{` in column 1 (handy in
+  C/Go/Java).
+
+### Text manipulation
+
+Basics:
+
+| Action                        | Command                        |
+| ----------------------------- | ------------------------------ |
+| Delete character under cursor | `x`                            |
+| Put (paste)                   | `p`                            |
+| Delete operator + motion      | `d`                            |
+| Undo word (insert)            | `CTRL-w`                       |
+| Undo line (insert)            | `CTRL-u`                       |
+| Undo change                   | `u`                            |
+| Redo                          | `Ctrl-r`                       |
+| Repeat previous insert        | `Ctrl-a`                       |
+| Repeat last change            | `.`                            |
+| Toggle case                   | `~`                            |
+| Uppercase (visual)            | `U`                            |
+| Lowercase (visual)            | `u`                            |
+| Align selection               | `:center` / `:left` / `:right` |
+
+Misc:
+
+| Action                   | Shortcut    |
+| ------------------------ | ----------- |
+| Character-wise visual    | `v`         |
+| Line-wise visual         | `V`         |
+| Block visual             | `<Ctrl-v>`  |
+| Fold close / open        | `zc` / `zo` |
+| Go to definition         | `gd`        |
+| Go to references         | `gD`        |
+| Comment line (if mapped) | e.g. `gcc`  |
+
+| Action                              | Command        |
+| ----------------------------------- | -------------- |
+| Sort lines                          | `:sort`        |
+| Join lines                          | `:join` or `J` |
+| Join without spaces                 | `:join!`       |
+| Insert at line start / end          | `I` / `A`      |
+| Delete to end of line               | `D`            |
+| Change to end of line (into insert) | `C`            |
+
+Advanced patterns:
+
+- Append to many lines: `:normal A<text>` (often after visual-block `Ctrl-v`).
+- Neovim may pad short lines with spaces when block-appending past EOL.
+- Delete last character on many lines: `:normal $x` over a visual selection.
+- Delete last word on many lines: `:normal $bD`.
+
+### Search
+
+| Action                            | Command |
+| --------------------------------- | ------- |
+| Search forward / backward         | `/` `?` |
+| Repeat search same / opposite dir | `n` `N` |
+
+### Find and replace
+
+| Action              | Command                            |
+| ------------------- | ---------------------------------- |
+| In visual selection | `:s/old/new/g`                     |
+| Current line        | same                               |
+| Whole buffer        | `:%s/old/new/g`                    |
+| Regex example       | `:%s@\vhttp://(\w+)@https://\1@gc` |
+
+Notes:
+
+- `\v` — “very magic”, less backslash noise in the pattern.
+- `\1` — first capture group.
+
+### Specific line ranges
+
+| Action                | Command examples                     |
+| --------------------- | ------------------------------------ |
+| Lines 10–end          | `:10,$s/old/new/g` or `:10,$s@^@#@g` |
+| Lines 10–20           | `:10,20s/old/new/g`                  |
+| Strip trailing spaces | `:%s/\s\+$//g`                       |
+
+Flags: `g` all matches in range, `c` confirm each, `i` ignore case.
+
+### Buffers, windows, tabs
+
+> <https://neovim.io/doc/user/usr_08.html>  
+> <https://vimhelp.org/windows.txt.html>
+
+- **Buffer** — in-memory text for a file.
+- **Window** — viewport on a buffer.
+- **Tab page** — layout of windows.
+
+| Action             | Command                        |
+| ------------------ | ------------------------------ |
+| Horizontal split   | `:sp` or `:sp filename`        |
+| Vertical split     | `:vs` or `:vs filename`        |
+| Next / prev window | `Ctrl-w w` or `Ctrl-w h/j/k/l` |
+| List buffers       | `:ls`                          |
+| Next / prev buffer | `]b` / `[b` or `:bn` / `:bp`   |
+| New tab            | `:tabnew`                      |
+| Next / prev tab    | `gt` / `gT`                    |
+
+### History
+
+| Action          | Command |
+| --------------- | ------- |
+| Command history | `q:`    |
+| Search history  | `q/`    |

home/base/core/editors/neovim/default.nix

@@ -0,0 +1,96 @@
+{ config, nixvim, ... }:
+{
+
+  imports = [ nixvim.homeModules.nixvim ];
+  home.shellAliases = {
+
+    vi = "nvim";
+    vim = "nvim";
+  };
+
+  programs.nixvim = {
+    enable = true;
+
+    clipboard.providers.wl-copy.enable = true;
+
+    opts = {
+      number = true;
+      relativenumber = true;
+      cursorline = true;
+      signcolumn = "auto";
+      clipboard = "unnamedplus";
+      scrolloff = 8;
+      swapfile = false;
+      title = true;
+      titlelen = 20;
+      smartindent = false;
+      mouse = "a";
+      undofile = true;
+      ignorecase = true;
+      smartcase = true;
+      splitbelow = true;
+      splitright = true;
+      updatetime = 300;
+      wrap = true;
+      linebreak = true;
+    };
+
+    colorschemes.catppuccin = {
+      enable = true;
+      settings = {
+        transparent_background = true;
+      };
+    };
+
+    plugins.lsp.servers = {
+      nixd.enable = true;
+      "rust_analyzer" = {
+        enable = true;
+        installCargo = false;
+        installRustc = false;
+      };
+      gopls.enable = true;
+      pyright.enable = true;
+      bashls.enable = true;
+    };
+
+    plugins.treesitter = {
+      enable = true;
+      grammarPackages = with config.programs.nixvim.plugins.treesitter.package.builtGrammars; [
+        bash
+        json
+        lua
+        make
+        markdown
+        nix
+        regex
+        rust
+        go
+        python
+        toml
+        vim
+        vimdoc
+        xml
+        yaml
+        nu
+      ];
+    };
+
+    plugins.neo-tree = {
+      enable = true;
+      settings = {
+        filesystem = {
+          filtered_items = {
+            visible = true;
+            hide_dotfiles = false;
+            hide_gitignored = false;
+          };
+          follow_current_file = {
+            enabled = true;
+            leave_dirs_open = false;
+          };
+        };
+      };
+    };
+  };
+}

home/base/core/editors/session-env.nix

@@ -0,0 +1,9 @@
+# Default interactive editor is Helix (`hx`). For trust-boundary edits (e.g. `sudoedit`,
+# secrets, unfamiliar payloads), prefer `nvim --clean` — wired via `SUDO_EDITOR`.
+{
+  home.sessionVariables = {
+    EDITOR = "hx";
+    VISUAL = "hx";
+    SUDO_EDITOR = "nvim --clean";
+  };
+}

home/base/core/git.nix

@@ -0,0 +1,111 @@
+{
+  config,
+  lib,
+  pkgs,
+  myvars,
+  ...
+}:
+{
+  # `programs.git` will generate the config file: ~/.config/git/config
+  # to make git use this config file, `~/.gitconfig` should not exist!
+  #
+  #    https://git-scm.com/docs/git-config#Documentation/git-config.txt---global
+  home.activation.removeExistingGitconfig = lib.hm.dag.entryBefore [ "checkLinkTargets" ] ''
+    rm -f ${config.home.homeDirectory}/.gitconfig
+  '';
+
+  # GitHub CLI tool
+  # https://cli.github.com/manual/
+  programs.gh.enable = true;
+
+  programs.git = {
+    enable = true;
+    lfs.enable = true;
+
+    signing.format = "openpgp";
+    # signing = {
+    #   key = "xxx";
+    #   signByDefault = true;
+    # };
+
+    includes = [
+      {
+        # use different email & name for work:
+        #
+        # [user]
+        #   email = "xxx@xxx.com"
+        #   name = "Ryan Yin"
+        path = "~/work/.gitconfig";
+        condition = "gitdir:~/work/";
+      }
+    ];
+
+    settings = {
+      user.email = myvars.useremail;
+      user.name = myvars.userfullname;
+
+      init.defaultBranch = "main";
+      trim.bases = "develop,master,main"; # for git-trim
+      push.autoSetupRemote = true;
+      pull.rebase = true;
+      log.date = "iso"; # use iso format for date
+
+      # replace https with ssh
+      url = {
+        "ssh://git@github.com/ryan4yin" = {
+          insteadOf = "https://github.com/ryan4yin";
+        };
+        # "ssh://git@bitbucket.com/ryan4yin" = {
+        #   insteadOf = "https://bitbucket.com/ryan4yin";
+        # };
+      };
+
+      alias = {
+        # common aliases
+        br = "branch";
+        co = "checkout";
+        st = "status";
+        ls = "log --pretty=format:\"%C(yellow)%h%Cred%d\\\\ %Creset%s%Cblue\\\\ [%cn]\" --decorate";
+        ll = "log --pretty=format:\"%C(yellow)%h%Cred%d\\\\ %Creset%s%Cblue\\\\ [%cn]\" --decorate --numstat";
+        cm = "commit -m"; # commit via `git cm <message>`
+        ca = "commit -am"; # commit all changes via `git ca <message>`
+        dc = "diff --cached";
+
+        amend = "commit --amend -m"; # amend commit message via `git amend <message>`
+        unstage = "reset HEAD --"; # unstage file via `git unstage <file>`
+        merged = "branch --merged"; # list merged(into HEAD) branches via `git merged`
+        unmerged = "branch --no-merged"; # list unmerged(into HEAD) branches via `git unmerged`
+        nonexist = "remote prune origin --dry-run"; # list non-exist(remote) branches via `git nonexist`
+
+        # delete merged branches except master & dev & staging
+        #  `!` indicates it's a shell script, not a git subcommand
+        delmerged = ''! git branch --merged | egrep -v "(^\*|main|master|dev|staging)" | xargs git branch -d'';
+        # delete non-exist(remote) branches
+        delnonexist = "remote prune origin";
+
+        # aliases for submodule
+        update = "submodule update --init --recursive";
+        foreach = "submodule foreach";
+      };
+    };
+  };
+
+  # A syntax-highlighting pager for git, diff, grep, and blame output
+  programs.delta = {
+    enable = true;
+    enableGitIntegration = true;
+    options = {
+      diff-so-fancy = true;
+      line-numbers = true;
+      true-color = "always";
+      # features => named groups of settings, used to keep related settings organized
+      # features = "";
+    };
+  };
+
+  # Git terminal UI (written in go).
+  programs.lazygit.enable = true;
+
+  # Yet another Git TUI (written in rust).
+  programs.gitui.enable = false;
+}

home/base/core/npm.nix

@@ -0,0 +1,9 @@
+{ config, ... }:
+{
+  # 1. make `npm install -g <pkg>` happey
+  # 2. set min-release-age for security
+  home.file.".npmrc".text = ''
+    prefix=${config.home.homeDirectory}/.npm
+    min-release-age=7
+  '';
+}

home/base/core/pip.nix

@@ -0,0 +1,7 @@
+_: {
+  # use mirror for pip install
+  xdg.configFile."pip/pip.conf".text = ''
+    [global]
+    index-url = https://mirrors.bfsu.edu.cn/pypi/web/simple
+  '';
+}

home/base/core/shells/config.nu

@@ -0,0 +1,175 @@
+# Based on the default config generated by:
+#    ```
+#    config nu --default
+#    ```
+#
+# Nushell Config File Documentation
+#
+# Warning: This file is intended for documentation purposes only and
+# is not intended to be used as an actual configuration file as-is.
+#
+# version = "0.103.0"
+#
+# A `config.nu` file is used to override default Nushell settings,
+# define (or import) custom commands, or run any other startup tasks.
+# See https://www.nushell.sh/book/configuration.html
+#
+# Nushell sets "sensible defaults" for most configuration settings, so
+# the user's `config.nu` only needs to override these defaults if
+# desired.
+#
+# This file serves as simple "in-shell" documentation for these
+# settings, or you can view a more complete discussion online at:
+# https://nushell.sh/book/configuration
+#
+# You can pretty-print and page this file using:
+# config nu --doc | nu-highlight | less -R
+
+# $env.config
+# -----------
+# The $env.config environment variable is a record containing most Nushell
+# configuration settings. Keep in mind that, as a record, setting it to a
+# new record will remove any keys which aren't in the new record. Nushell
+# will then automatically merge in the internal defaults for missing keys.
+#
+# The same holds true for keys in the $env.config which are also records
+# or lists.
+#
+# For this reason, settings are typically changed by updating the value of
+# a particular key. Merging a new config record is also possible. See the
+# Configuration chapter of the book for more information.
+
+
+$env.config.history.file_format = "sqlite"
+$env.config.history.max_size = 5_000_000
+
+# isolation (bool):
+# `true`: New history from other currently-open Nushell sessions is not
+# seen when scrolling through the history using PrevHistory (typically
+# the Up key) or NextHistory (Down key)
+# `false`: All commands entered in other Nushell sessions will be mixed with
+# those from the current shell.
+# Note: Older history items (from before the current shell was started) are
+# always shown.
+# This setting only applies to SQLite-backed history
+$env.config.history.isolation = true
+
+# ----------------------
+# Miscellaneous Settings
+# ----------------------
+
+# show_banner (bool): Enable or disable the welcome banner at startup
+$env.config.show_banner = false
+
+# rm.always_trash (bool):
+# true: rm behaves as if the --trash/-t option is specified
+# false: rm behaves as if the --permanent/-p option is specified (default)
+$env.config.rm.always_trash = true
+
+# recursion_limit (int): how many times a command can call itself recursively
+# before an error will be generated.
+$env.config.recursion_limit = 50
+
+# ---------------------------
+# Commandline Editor Settings
+# ---------------------------
+
+# edit_mode (string) "vi" or "emacs" sets the editing behavior of Reedline
+$env.config.edit_mode = "vi"
+
+# Command that will be used to edit the current line buffer with Ctrl+O.
+# If unset, uses $env.VISUAL and then $env.EDITOR ($EDITOR is `hx` via session-env).
+#
+$env.config.buffer_editor = ["hx"]
+
+# cursor_shape_* (string)
+# -----------------------
+# The following variables accept a string from the following selections:
+# "block", "underscore", "line", "blink_block", "blink_underscore", "blink_line", or "inherit"
+# "inherit" skips setting cursor shape and uses the current terminal setting.
+$env.config.cursor_shape.emacs = "inherit"         # Cursor shape in emacs mode
+$env.config.cursor_shape.vi_insert = "block"       # Cursor shape in vi-insert mode
+$env.config.cursor_shape.vi_normal = "underscore"  # Cursor shape in normal vi mode
+
+# --------------------
+# Terminal Integration
+# --------------------
+# Nushell can output a number of escape codes to enable advanced features in Terminal Emulators
+# that support them. Settings in this section enable or disable these features in Nushell.
+# Features aren't supported by your Terminal can be disabled. Features can also be disabled,
+#  of course, if there is a conflict between the Nushell and Terminal's implementation.
+
+# use_kitty_protocol (bool):
+# A keyboard enhancement protocol supported by the Kitty Terminal. Additional keybindings are
+# available when using this protocol in a supported terminal. For example, without this protocol,
+# Ctrl+I is interpreted as the Tab Key. With this protocol, Ctrl+I and Tab can be mapped separately.
+$env.config.use_kitty_protocol = false
+
+# osc2 (bool):
+# When true, the current directory and running command are shown in the terminal tab/window title.
+# Also abbreviates the directory name by prepending ~ to the home directory and its subdirectories.
+$env.config.shell_integration.osc2 = true
+
+# osc7 (bool):
+# Nushell will report the current directory to the terminal using OSC 7. This is useful when
+# spawning new tabs in the same directory.
+$env.config.shell_integration.osc7 = true
+
+# osc9_9 (bool):
+# Enables/Disables OSC 9;9 support, originally a ConEmu terminal feature. This is an
+# alternative to OSC 7 which also communicates the current path to the terminal.
+$env.config.shell_integration.osc9_9 = false
+
+# osc8 (bool):
+# When true, the `ls` command will generate clickable links that can be launched in another
+# application by the terminal.
+# Note: This setting replaces the now deprecated `ls.clickable_links`
+$env.config.shell_integration.osc8 = true
+
+# osc133 (bool):
+# true/false to enable/disable OSC 133 support, a set of several escape sequences which
+# report the (1) starting location of the prompt, (2) ending location of the prompt,
+# (3) starting location of the command output, and (4) the exit code of the command.
+
+# originating with Final Term. These sequences report information regarding the prompt
+# location as well as command status to the terminal. This enables advanced features in
+# some terminals, including the ability to provide separate background colors for the
+# command vs. the output, collapsible output, or keybindings to scroll between prompts.
+$env.config.shell_integration.osc133 = true
+
+# osc633 (bool):
+# true/false to enable/disable OSC 633, an extension to OSC 133 for Visual Studio Code
+$env.config.shell_integration.osc633 = true
+
+# NU_LIB_DIRS
+# -----------
+# Directories in this constant are searched by the
+# `use` and `source` commands.
+#
+# By default, the `scripts` subdirectory of the default configuration
+# directory is included:
+const NU_LIB_DIRS = [
+    ($nu.default-config-dir | path join 'scripts') # add <nushell-config-dir>/scripts
+    ($nu.data-dir | path join 'completions') # default home for nushell completions
+]
+
+# NU_PLUGIN_DIRS
+# --------------
+# Directories to search for plugin binaries when calling add.
+
+# By default, the `plugins` subdirectory of the default configuration
+# directory is included:
+const NU_PLUGIN_DIRS = [
+    ($nu.default-config-dir | path join 'plugins') # add <nushell-config-dir>/plugins
+]
+
+# As with NU_LIB_DIRS, an $env.NU_PLUGIN_DIRS is searched after the constant version
+
+# The `path add` function from the Standard Library also provides
+# a convenience method for prepending to the path:
+use std/util "path add"
+path add "~/.local/bin"
+
+# You can remove duplicate directories from the path using:
+$env.PATH = ($env.PATH | uniq)
+

home/base/core/shells/default.nix

@@ -1,3 +1,4 @@
+{ config, ... }:
 let
   shellAliases = {
     k = "kubectl";
@@ -5,21 +6,28 @@ let
     urldecode = "python3 -c 'import sys, urllib.parse as ul; print(ul.unquote_plus(sys.stdin.read()))'";
     urlencode = "python3 -c 'import sys, urllib.parse as ul; print(ul.quote_plus(sys.stdin.read()))'";
   };
-in {
-  # only works in bash/zsh, not nushell
-  home.shellAliases = shellAliases;
-
-  programs.nushell = {
-    enable = true;
-    configFile.source = ./config.nu;
-    shellAliases = shellAliases;
-  };
 
+  localBin = "${config.home.homeDirectory}/.local/bin";
+  goBin = "${config.home.homeDirectory}/go/bin";
+  rustBin = "${config.home.homeDirectory}/.cargo/bin";
+  npmBin = "${config.home.homeDirectory}/.npm/bin";
+in
+{
   programs.bash = {
     enable = true;
     enableCompletion = true;
     bashrcExtra = ''
-      export PATH="$HOME/.local/bin:$HOME/go/bin:$PATH"
+      export PATH="$PATH:${localBin}:${goBin}:${rustBin}:${npmBin}"
     '';
   };
+
+  # NOTE: only works in bash/zsh, not nushell
+  home.shellAliases = shellAliases;
+
+  # NOTE: nushell will be launched in bash, so it can inherit all the eenvironment variables.
+  programs.nushell = {
+    enable = true;
+    configFile.source = ./config.nu;
+    inherit shellAliases;
+  };
 }

home/base/core/starship.nix

@@ -0,0 +1,29 @@
+{
+  programs.starship = {
+    enable = true;
+
+    enableBashIntegration = true;
+    enableZshIntegration = true;
+    enableNushellIntegration = true;
+
+    # https://starship.rs/config/
+    settings = {
+      # Get editor completions based on the config schema
+      "$schema" = "https://starship.rs/config-schema.json";
+      character = {
+        success_symbol = "[➜](bold green)";
+        error_symbol = "[➜](bold red)";
+      };
+      # I never rely on the defaults, so this module is useless to me—disabled.
+      # I prefer adding --project, --region to very gcloud/aws command.
+      aws.disabled = true;
+      gcloud.disabled = true;
+
+      kubernetes = {
+        symbol = "⛵";
+        disabled = false;
+      };
+      os.disabled = false;
+    };
+  };
+}

home/base/core/theme.nix

@@ -0,0 +1,16 @@
+{ catppuccin, ... }:
+{
+  # https://github.com/catppuccin/nix
+  imports = [
+    catppuccin.homeModules.catppuccin
+  ];
+
+  catppuccin = {
+    # The default `enable` value for all available programs.
+    enable = true;
+    # one of "latte", "frappe", "macchiato", "mocha"
+    flavor = "mocha";
+    # one of "blue", "flamingo", "green", "lavender", "maroon", "mauve", "peach", "pink", "red", "rosewater", "sapphire", "sky", "teal", "yellow"
+    accent = "pink";
+  };
+}

home/base/core/yazi.nix

@@ -0,0 +1,18 @@
+{ pkgs, ... }:
+{
+  # terminal file manager
+  programs.yazi = {
+    enable = true;
+    package = pkgs.yazi;
+    # Changing working directory when exiting Yazi
+    enableBashIntegration = true;
+    enableNushellIntegration = true;
+    shellWrapperName = "yy";
+    settings = {
+      mgr = {
+        show_hidden = true;
+        sort_dir_first = true;
+      };
+    };
+  };
+}

home/base/core/zellij/default.nix

@@ -0,0 +1,13 @@
+let
+  shellAliases = {
+    "zj" = "zellij";
+  };
+in
+{
+  programs.zellij = {
+    enable = true;
+  };
+  # only works in bash/zsh, not nushell
+  home.shellAliases = shellAliases;
+  programs.nushell.shellAliases = shellAliases;
+}

home/base/desktop/cloud/default.nix

@@ -1,28 +0,0 @@
-{pkgs, ...}: {
-  home.packages = with pkgs;
-    [
-      # general tools
-      pulumi
-      pulumictl
-      # istioctl
-
-      # aws
-      awscli2
-      ssm-session-manager-plugin # Amazon SSM Session Manager Plugin
-      aws-iam-authenticator
-      eksctl
-      istioctl
-
-      # aliyun
-      aliyun-cli
-    ]
-    ++ (
-      if pkgs.stdenv.isLinux
-      then [
-        # cloud tools that nix do not have cache for.
-        terraform
-        terraformer # generate terraform configs from existing cloud resources
-      ]
-      else []
-    );
-}

home/base/desktop/container/container.nix

@@ -1,14 +0,0 @@
-{
-  pkgs,
-  pkgs-unstable,
-  ...
-}: {
-  home.packages = with pkgs; [
-    skopeo
-    docker-compose
-    dive # explore docker layers
-  ];
-
-  programs = {
-  };
-}

home/base/desktop/container/kubernetes.nix

@@ -1,30 +0,0 @@
-{
-  pkgs,
-  nur-ryan4yin,
-  ...
-}: {
-  home.packages = with pkgs; [
-    kubectl
-    kubernetes-helm
-  ];
-
-  programs = {
-    k9s = {
-      enable = true;
-      skin = let
-        skin_file = "${nur-ryan4yin.packages.${pkgs.system}.catppuccin-k9s}/dist/mocha.yml"; # theme - catppuccin mocha
-        skin_attr = builtins.fromJSON (
-          builtins.readFile
-          # replace 'base: &base "#1e1e2e"' with 'base: &base "default"'
-          # to make fg/bg color transparent. "default" means transparent in k9s skin.
-          (pkgs.runCommandNoCC "get-skin-json" {} ''
-            cat ${skin_file} \
-              |  sed -E 's@(base: &base ).+@\1 "default"@g' \
-              | ${pkgs.yj}/bin/yj > $out
-          '')
-        );
-      in
-        skin_attr;
-    };
-  };
-}

home/base/desktop/development.nix

@@ -1,87 +0,0 @@
-{
-  pkgs,
-  pkgs-unstable,
-  ...
-}: {
-  #############################################################
-  #
-  #  Basic settings for development environment
-  #
-  #  Please avoid to install language specific packages here(globally),
-  #  instead, install them:
-  #     1. per IDE, such as `programs.neovim.extraPackages`
-  #     2. per-project, using https://github.com/the-nix-way/dev-templates
-  #
-  #############################################################
-
-  home.packages = with pkgs;
-    [
-      (python3.withPackages (
-        ps:
-          with ps; [
-            ipython
-            pandas
-            requests
-            pyquery
-            pyyaml
-          ]
-      ))
-
-      cargo # rust package manager
-      go
-      jdk17
-      guile # scheme language
-
-      # db related
-      dbeaver
-      mycli
-      pgcli
-      mongosh
-      sqlite
-
-      # embedded development
-      minicom
-
-      # ai related
-      python311Packages.huggingface-hub # huggingface-cli
-
-      # misc
-      pkgs-unstable.devbox
-      glow # markdown previewer
-      fzf
-      gdu # disk usage analyzer, required by AstroNvim
-      ripgrep # fast search tool, required by AstroNvim's '<leader>fw'(<leader> is space key)
-      bfg-repo-cleaner # remove large files from git history
-      k6 # load testing tool
-      protobuf # protocol buffer compiler
-    ]
-    ++ (
-      if pkgs.stdenv.isLinux
-      then [
-        # Automatically trims your branches whose tracking remote refs are merged or gone
-        # It's really useful when you work on a project for a long time.
-        git-trim
-
-        # need to run `conda-install` before using it
-        # need to run `conda-shell` before using command `conda`
-        # conda is not available for MacOS
-        conda
-
-        mitmproxy # http/https proxy tool
-        insomnia # REST client
-        wireshark # network analyzer
-      ]
-      else []
-    );
-
-  programs = {
-    direnv = {
-      enable = true;
-      nix-direnv.enable = true;
-
-      enableZshIntegration = true;
-      enableBashIntegration = true;
-      enableNushellIntegration = true;
-    };
-  };
-}

home/base/desktop/helix.nix

@@ -1,36 +0,0 @@
-{
-  pkgs,
-  nur-ryan4yin,
-  ...
-}: {
-  # https://github.com/catppuccin/helix
-  xdg.configFile."helix/themes".source = "${nur-ryan4yin.packages.${pkgs.system}.catppuccin-helix}/themes/default";
-
-  programs.helix = {
-    enable = true;
-    package = pkgs.helix;
-    settings = {
-      theme = "catppuccin_mocha";
-      editor = {
-        line-number = "relative";
-        cursorline = true;
-        color-modes = true;
-        lsp.display-messages = true;
-        cursor-shape = {
-          insert = "bar";
-          normal = "block";
-          select = "underline";
-        };
-        indent-guides.render = true;
-      };
-      keys.normal = {
-        space = {
-          space = "file_picker";
-          w = ":w";
-          q = ":q";
-        };
-        esc = ["collapse_selection" "keep_primary_selection"];
-      };
-    };
-  };
-}

home/base/desktop/neovim/README.md

@@ -1,228 +0,0 @@
-# AstroNvim Configuration and Shortcuts
-
-My Neovim config based on [AstroNvim](https://github.com/AstroNvim/AstroNvim).
-For more details, visit the [AstroNvim website](https://astronvim.com/).
-
-This document outlines neovim's configuration structure and various shortcuts/commands for efficient usage.
-
-## Configuration Structure
-
-| Description                                       | Standard Location                           | My Location                                                               |
-| ------------------------------------------------- | ------------------------------------------- | ------------------------------------------------------------------------- |
-| Neovim's config                                   | `~/.config/nvim`                            | AstroNvim's github repository, referenced as a flake input in this flake. |
-| AstroNvim's user configuration                    | `$XDG_CONFIG_HOME/astronvim/lua/user`       | [./astronvim_user/](./astronvim_user/)                                    |
-| Plugins installation directory (lazy.nvim)        | `~/.local/share/nvim/`                      | The same as standard location, generated and managed by lazy.nvim.        |
-| LSP servers, DAP servers, linters, and formatters | `~/.local/share/nvim/mason/`(by mason.nvim) | [./default.nix](./default.nix), installed by nix.                         |
-
-## Update/Clean Plugins
-
-Note that lazy.nvim will not automatically update plugins, so you need to update them manually.
-
-```bash
-:Lazy update
-```
-
-Remove all unused plugins:
-
-```bash
-:Lazy clean
-```
-
-## Screenshots
-
-![](/_img/astronvim_2023-07-13_00-39.webp)
-![](/_img/hyprland_2023-07-29_2.webp)
-
-## Visual Modes
-
-| Action                   | Shortcut                                 |
-| ------------------------ | ---------------------------------------- |
-| Toggle visual mode       | `v`                                      |
-| Toggle visual block mode | `<Ctrl> + v` (select a block vertically) |
-
-## Incremental Selection
-
-Provided by nvim-treesitter.
-
-| Action            | Shortcut       |
-| ----------------- | -------------- |
-| init selection    | `<Ctrl-space>` |
-| node incremental  | `<Ctrl-space>` |
-| scope incremental | `<Alt-Space>`  |
-| node decremental  | `Backspace`    |
-
-## Search and Jump
-
-Provided by [flash.nvim](https://github.com/folke/flash.nvim), it's a intelligent search and jump plugin.
-
-1. It enhaces the default search and jump behavior of neovim.(search with prefix `/`)
-
-| Action            | Shortcut                                                                                                      |
-| ----------------- | ------------------------------------------------------------------------------------------------------------- |
-| Search            | `/`(normal search), `s`(disable all code highlight, only highlight matches)                                   |
-| Treesitter Search | `yR`,`dR`, `cR`, `vR`, `ctrl+v+R`(arround your matches, all the surrounding Treesitter nodes will be labeled) |
-| Remote Flash      | `yr`, `dr`, `cr`, (arround your matches, all the surrounding Treesitter nodes will be labeled)                |
-
-## Text Manipulation
-
-- Add at the end of multiple lines: `:normal A<text>`
-
-  - Execublock: `:A<text>`
-
-  - visual block mode(ctrl + v)
-  - Append text at the end of each line in the selected block
-  - If position exceeds line end, neovim adds spaces automatically
-
-- Delete the last char of multivle lines: `:normal $x`
-
-  - Execute `$x` on each line
-  - visual mode(v)
-  - `$` moves cursor to the end of line
-  - `x` deletes the character under the cursor
-
-- Delete the last word of multiple lines: `:normal $bD`
-  - Execute `$bD` on each line
-  - visual mode(v)
-  - `$` moves cursor to the end of line
-  - `b` moves cursor to the beginning of the last word
-  - `D` deletes from cursor to the end of line
-
-## Commands & Shortcuts
-
-| Action                        | Shortcut       |
-| ----------------------------- | -------------- |
-| Learn Neovim's Basics         | `:Tutor`       |
-| Open file explorer            | `<Space> + e`  |
-| Focus Neotree to current file | `<Space> + o`  |
-| Floating Terminal             | `<Space> + tf` |
-| Horizontal Split Terminal     | `<Space> + th` |
-| Vertical Split Terminal       | `<Space> + tv` |
-| Open IPython REPL             | `<Space> + tp` |
-| Toggle line wrap              | `<Space> + uw` |
-| Show line diagnostics         | `gl`           |
-| Show function/variable info   | `K`            |
-| Go to definition              | `gd`           |
-| References of a symbol        | `gr`           |
-
-## Window Navigation
-
-- Switch between windows: `<Ctrl> + h/j/k/l`
-- Resize windows: `<Ctrl> + Up/Down/Left/Right`
-  - Note: On macOS, conflicts with system shortcuts
-  - Disable in System Preferences -> Keyboard -> Shortcuts -> Mission Control
-
-## Splitting and Buffers
-
-| Action                | Shortcut      |
-| --------------------- | ------------- |
-| Horizontal Split      | `\`           |
-| Vertical Split        | `\|`          |
-| Next Buffer (Tab)     | `]b`          |
-| Previous Buffer (Tab) | `[b`          |
-| Close Buffer          | `<Space> + c` |
-
-## Editing and Formatting
-
-| Action                                                | Shortcut       |
-| ----------------------------------------------------- | -------------- |
-| Toggle buffer auto formatting                         | `<Space> + uf` |
-| Format Document                                       | `<Space> + lf` |
-| Code Actions                                          | `<Space> + la` |
-| Rename                                                | `<Space> + lr` |
-| Opening LSP symbols                                   | `<Space> + lS` |
-| Comment Line(support multiple lines)                  | `<Space> + /`  |
-| Open filepath/URL at cursor(neovim's builtin command) | `gx`           |
-| Find files by name (fzf)                              | `<Space> + ff` |
-| Grep string in files (ripgrep)                        | `<Space> + fw` |
-
-## Sessions
-
-| Action                         | Shortcut       |
-| ------------------------------ | -------------- |
-| Save Session                   | `<Space> + Ss` |
-| Last Session                   | `<Space> + Sl` |
-| Delete Session                 | `<Space> + Sd` |
-| Search Session                 | `<Space> + Sf` |
-| Load Current Directory Session | `<Space> + S.` |
-
-## Debugging
-
-Press `<Space> + D` to view available bindings and options.
-
-## Find and Replace
-
-| Action                   | Command                             |
-| ------------------------ | ----------------------------------- |
-| Replace in selected area | `:s/old/new/g`                      |
-| Replace in current line  | Same as above                       |
-| Replace in whole file    | `:% s/old/new/g`                    |
-| Replace with regex       | `:% s@\vhttp://(\w+)@https://\1@gc` |
-
-1. `\v` means means that in the regex pattern after it can be used without backslash escaping(similar to python's raw string).
-2. `\1` means the first matched group in the pattern.
-
-## Replace in the specific lines
-
-| Action                                    | Command                                |
-| ----------------------------------------- | -------------------------------------- |
-| From the 10th line to the end of the file | `:10,$ s/old/new/g` or `:10,$ s@^@#@g` |
-| From the 10th line to the 20th line       | `:10,20 s/old/new/g`                   |
-
-The postfix(flags) in the above commands:
-
-1. `g` means replace all the matched strings in the current line/file.
-2. `c` means ask for confirmation before replacing.
-3. `i` means ignore case.
-
-## Search and Replace Globally
-
-| Description                                                  | Shortcut                                                         |
-| ------------------------------------------------------------ | ---------------------------------------------------------------- |
-| Open spectre.nvim search and replace panel                   | `<Space> + ss`                                                   |
-| Search and replace in command line(need install `sad` first) | `find -name "*.nix" \| sad '<pattern>' '<replacement>' \| delta` |
-
-## Surrounding Characters
-
-Provided by mini.surround plugin.
-
-- Prefix `gz`
-
-| Action                         | Shortcut | Description                                     |
-| ------------------------------ | -------- | ----------------------------------------------- |
-| Add surrounding characters     | `gzaiw'` | Add `'` around the word under cursor            |
-| Delete surrounding characters  | `gzd'`   | Delete `'` around the word under cursor         |
-| Replace surrounding characters | `gzr'"`  | Replace `'` by `"` around the word under cursor |
-| Highlight surrounding          | `gzh'`   | Highlight `'` around the word under cursor      |
-
-## Text Manipulation
-
-| Action                                 |               |
-| -------------------------------------- | ------------- |
-| Join Selection of Lines With Space     | `:join`       |
-| Join without spaces                    | `:join!`      |
-| Join with LSP intelligence(treesj)     | `<Space> + j` |
-| Split Line into Multiple Lines(treesj) | `<Space> + s` |
-
-## Convert Text Case
-
-| Action               |     |
-| -------------------- | --- |
-| Toggle text's case   | `~` |
-| Convert to uppercase | `U` |
-| Convert to lowercase | `u` |
-
-## Miscellaneous
-
-| Action                       |                                              |
-| ---------------------------- | -------------------------------------------- |
-| Save selected text to a file | `:w filename` (Will show `:'<,'>w filename`) |
-| Show all Yank History        | `:<Space> + yh`                              |
-| Show undo history            | `:<Space> + uh`                              |
-
-## Additional Resources
-
-For more detailed information and advanced usage, refer to:
-
-1. [AstroNvim walkthrough](https://astronvim.com/Basic%20Usage/walkthrough)
-2. [./astronvim_user/mapping.lua](./astronvim_user/mappings.lua)
-3. All the plugins' documentations

home/base/desktop/neovim/astronvim_user/init.lua

@@ -1,459 +0,0 @@
-return {
-  colorscheme = "catppuccin",
-
-  options = {
-    opt = {
-      relativenumber = true, -- Show relative numberline
-      signcolumn = "auto", -- Show sign column when used only
-      spell = false,      -- Spell checking
-      swapfile = false,   -- Swapfile
-      smartindent = false, -- fix https://github.com/ryan4yin/nix-config/issues/4
-    },
-  },
-
-  plugins = {
-    "AstroNvim/astrocommunity",
-    -- colorscheme - catppuccin
-    { import = "astrocommunity.colorscheme.catppuccin" },
-    -- Highly experimental plugin that completely replaces
-    -- the UI for messages, cmdline and the popupmenu.
-    -- { import = "astrocommunity.utility.noice-nvim" },
-    -- Fully featured & enhanced replacement for copilot.vim
-    -- <Tab> work with both auto completion in cmp and copilot
-    { import = "astrocommunity.media.vim-wakatime" },
-    { import = "astrocommunity.motion.leap-nvim" },
-    { import = "astrocommunity.motion.flit-nvim" },
-    { import = "astrocommunity.scrolling.nvim-scrollbar" },
-    { import = "astrocommunity.editing-support.todo-comments-nvim" },
-    -- Language Support
-    ---- Frontend & NodeJS
-    { import = "astrocommunity.pack.typescript-all-in-one" },
-    { import = "astrocommunity.pack.tailwindcss" },
-    { import = "astrocommunity.pack.html-css" },
-    { import = "astrocommunity.pack.prisma" },
-    { import = "astrocommunity.pack.vue" },
-    ---- Configuration Language
-    { import = "astrocommunity.pack.markdown" },
-    { import = "astrocommunity.pack.json" },
-    { import = "astrocommunity.pack.yaml" },
-    { import = "astrocommunity.pack.toml" },
-    ---- Backend
-    { import = "astrocommunity.pack.lua" },
-    { import = "astrocommunity.pack.go" },
-    { import = "astrocommunity.pack.rust" },
-    { import = "astrocommunity.pack.python" },
-    { import = "astrocommunity.pack.java" },
-    -- { import = "astrocommunity.pack.nix" },  -- manually add config for nix, comment this one.
-    { import = "astrocommunity.pack.proto" },
-    ---- Operation & Cloud Native
-    { import = "astrocommunity.pack.terraform" },
-    { import = "astrocommunity.pack.bash" },
-    { import = "astrocommunity.pack.cmake" },
-    { import = "astrocommunity.pack.cpp" },
-    { import = "astrocommunity.pack.docker" },
-    -- Motion
-    { import = "astrocommunity.motion.mini-surround" },
-    -- https://github.com/echasnovski/mini.ai
-    { import = "astrocommunity.motion.mini-ai" },
-    { import = "astrocommunity.motion.flash-nvim" },
-    { "folke/flash.nvim",                                          vscode = false },
-    -- Lua implementation of CamelCaseMotion, with extra consideration of punctuation.
-    { import = "astrocommunity.motion.nvim-spider" },
-    -- AI Assistant
-    { import = "astrocommunity.completion.copilot-lua-cmp" },
-    -- Custom copilot-lua to enable filtypes: markdown
-    {
-      "zbirenbaum/copilot.lua",
-      opts = function(_, opts)
-        opts.filetypes = {
-          yaml = true,
-          markdown = true,
-        }
-      end,
-    },
-
-    {
-      "0x00-ketsu/autosave.nvim",
-      -- lazy-loading on events
-      event = { "InsertLeave", "TextChanged" },
-      opts = function(_, opts)
-        opts.prompt_style = "stdout" -- notify or stdout
-      end,
-    },
-
-    -- markdown preview
-    {
-      "0x00-ketsu/markdown-preview.nvim",
-      ft = { "md", "markdown", "mkd", "mkdn", "mdwn", "mdown", "mdtxt", "mdtext", "rmd", "wiki" },
-      config = function()
-        require("markdown-preview").setup({
-          -- your configuration comes here
-          -- or leave it empty to use the default settings
-          -- refer to the setup section below
-        })
-      end,
-    },
-
-    -- clipboard manager
-    {
-      "gbprod/yanky.nvim",
-      opts = function()
-        local mapping = require("yanky.telescope.mapping")
-        local mappings = mapping.get_defaults()
-        mappings.i["<c-p>"] = nil
-        return {
-          highlight = { timer = 200 },
-          picker = {
-            telescope = {
-              use_default_mappings = false,
-              mappings = mappings,
-            },
-          },
-        }
-      end,
-      keys = {
-        {
-          "y",
-          "<Plug>(YankyYank)",
-          mode = { "n", "x" },
-          desc = "Yank text",
-        },
-        {
-          "p",
-          "<Plug>(YankyPutAfter)",
-          mode = { "n", "x" },
-          desc = "Put yanked text after cursor",
-        },
-        {
-          "P",
-          "<Plug>(YankyPutBefore)",
-          mode = { "n", "x" },
-          desc = "Put yanked text before cursor",
-        },
-        {
-          "gp",
-          "<Plug>(YankyGPutAfter)",
-          mode = { "n", "x" },
-          desc = "Put yanked text after selection",
-        },
-        {
-          "gP",
-          "<Plug>(YankyGPutBefore)",
-          mode = { "n", "x" },
-          desc = "Put yanked text before selection",
-        },
-        { "[y", "<Plug>(YankyCycleForward)",              desc = "Cycle forward through yank history" },
-        { "]y", "<Plug>(YankyCycleBackward)",             desc = "Cycle backward through yank history" },
-        { "]p", "<Plug>(YankyPutIndentAfterLinewise)",    desc = "Put indented after cursor (linewise)" },
-        { "[p", "<Plug>(YankyPutIndentBeforeLinewise)",   desc = "Put indented before cursor (linewise)" },
-        { "]P", "<Plug>(YankyPutIndentAfterLinewise)",    desc = "Put indented after cursor (linewise)" },
-        { "[P", "<Plug>(YankyPutIndentBeforeLinewise)",   desc = "Put indented before cursor (linewise)" },
-        { ">p", "<Plug>(YankyPutIndentAfterShiftRight)",  desc = "Put and indent right" },
-        { "<p", "<Plug>(YankyPutIndentAfterShiftLeft)",   desc = "Put and indent left" },
-        { ">P", "<Plug>(YankyPutIndentBeforeShiftRight)", desc = "Put before and indent right" },
-        { "<P", "<Plug>(YankyPutIndentBeforeShiftLeft)",  desc = "Put before and indent left" },
-        { "=p", "<Plug>(YankyPutAfterFilter)",            desc = "Put after applying a filter" },
-        { "=P", "<Plug>(YankyPutBeforeFilter)",           desc = "Put before applying a filter" },
-      },
-    },
-
-    -- Enhanced matchparen.vim plugin for Neovim to highlight the outer pair.
-    {
-      "utilyre/sentiment.nvim",
-      version = "*",
-      event = "VeryLazy", -- keep for lazy loading
-      opts = {
-        -- config
-      },
-      init = function()
-        -- `matchparen.vim` needs to be disabled manually in case of lazy loading
-        vim.g.loaded_matchparen = 1
-      end,
-    },
-
-    -- joining blocks of code into oneline, or splitting one line into multiple lines.
-    {
-      "Wansmer/treesj",
-      keys = { "<space>m", "<space>j", "<space>s" },
-      dependencies = { "nvim-treesitter/nvim-treesitter" },
-      config = function()
-        require("treesj").setup({ --[[ your config ]]
-        })
-      end,
-    },
-
-    -- File explorer(Custom configs)
-    {
-      "nvim-neo-tree/neo-tree.nvim",
-      opts = {
-        filesystem = {
-          filtered_items = {
-            visible = true, -- visible by default
-            hide_dotfiles = false,
-            hide_gitignored = false,
-          },
-        },
-      },
-    },
-    -- The plugin offers the alibity to refactor code.
-    {
-      "ThePrimeagen/refactoring.nvim",
-      dependencies = {
-        { "nvim-lua/plenary.nvim" },
-        { "nvim-treesitter/nvim-treesitter" },
-      },
-    },
-    -- The plugin offers the abilibty to search and replace.
-    {
-      "nvim-pack/nvim-spectre",
-      dependencies = {
-        { "nvim-lua/plenary.nvim" },
-      },
-    },
-
-    -- full signature help, docs and completion for the nvim lua API.
-    { "folke/neodev.nvim",     opts = {} },
-
-    { "RRethy/vim-illuminate", config = function() end },
-
-    -- Language Parser for syntax highlighting / indentation / folding / Incremental selection
-    {
-      "nvim-treesitter/nvim-treesitter",
-      opts = function(_, opts)
-        local utils = require("astronvim.utils")
-        opts.incremental_selection = {
-          enable = true,
-          keymaps = {
-            init_selection = "<C-space>", -- Ctrl + Space
-            node_incremental = "<C-space>",
-            scope_incremental = "<A-space>", -- Alt + Space
-            node_decremental = "<bs>", -- Backspace
-          },
-        }
-        opts.ensure_installed = utils.list_insert_unique(opts.ensure_installed, {
-          -- neovim
-          "vim",
-          "lua",
-          -- operation & cloud native
-          "dockerfile",
-          "hcl",
-          "jsonnet",
-          "regex",
-          "terraform",
-          "nix",
-        })
-      end,
-    },
-
-    -- implementation/definition preview
-    {
-      "rmagatti/goto-preview",
-      config = function()
-        require("goto-preview").setup({})
-      end,
-    },
-
-    -- Undo tree
-    { "debugloop/telescope-undo.nvim" },
-
-    -- Install lsp, formmatter and others via home manager instead of Mason.nvim
-    -- LSP installations
-    {
-      "williamboman/mason-lspconfig.nvim",
-      -- overwrite ensure_installed to install lsp via home manager(except emmet_ls)
-      opts = function(_, opts)
-        opts.ensure_installed = {
-          "emmet_ls", -- not exist in nixpkgs, so install it via mason
-        }
-      end,
-    },
-    -- Formatters/Linter installation
-    {
-      "jay-babu/mason-null-ls.nvim",
-      -- ensure_installed nothing
-      opts = function(_, opts)
-        opts.ensure_installed = nil
-        opts.automatic_installation = false
-      end,
-    },
-    {
-      "jose-elias-alvarez/null-ls.nvim",
-      opts = function(_, opts)
-        local null_ls = require("null-ls")
-        local code_actions = null_ls.builtins.code_actions
-        local diagnostics = null_ls.builtins.diagnostics
-        local formatting = null_ls.builtins.formatting
-        local hover = null_ls.builtins.hover
-        local completion = null_ls.builtins.completion
-        -- https://github.com/jose-elias-alvarez/null-ls.nvim/blob/main/doc/BUILTINS.md
-        if type(opts.sources) == "table" then
-          vim.list_extend(opts.sources, {
-            -- Common Code Actions
-            code_actions.gitsigns,
-            -- common refactoring actions based off the Refactoring book by Martin Fowler
-            code_actions.refactoring,
-            code_actions.gomodifytags, -- Go - modify struct field tags
-            code_actions.impl,   -- Go - generate interface method stubs
-            code_actions.shellcheck,
-            code_actions.proselint, -- English prose linter
-            code_actions.statix, -- Lints and suggestions for Nix.
-
-            -- Diagnostic
-            diagnostics.actionlint, -- GitHub Actions workflow syntax checking
-            diagnostics.buf,  -- check text in current buffer
-            diagnostics.checkmake, -- check Makefiles
-            diagnostics.deadnix, -- Scan Nix files for dead code.
-
-            -- Formatting
-            formatting.prettier,                          -- js/ts/vue/css/html/json/... formatter
-            diagnostics.hadolint,                         -- Dockerfile linter
-            formatting.black,                             -- Python formatter
-            formatting.ruff,                              -- extremely fast Python linter
-            formatting.goimports,                         -- Go formatter
-            formatting.shfmt,                             -- Shell formatter
-            formatting.rustfmt,                           -- Rust formatter
-            formatting.taplo,                             -- TOML formatteautoindentr
-            formatting.terraform_fmt,                     -- Terraform formatter
-            formatting.stylua,                            -- Lua formatter
-            formatting.alejandra,                         -- Nix formatter
-            formatting.sqlfluff.with({                    -- SQL formatter
-              extra_args = { "--dialect", "postgres" },   -- change to your dialect
-            }),
-            formatting.nginx_beautifier,                  -- Nginx formatter
-            null_ls.builtins.formatting.verible_verilog_format, -- Verilog formatter
-          })
-        end
-      end,
-    },
-    -- Debugger installation
-    {
-      "jay-babu/mason-nvim-dap.nvim",
-      -- overrides `require("mason-nvim-dap").setup(...)`
-      opts = function(_, opts)
-        opts.ensure_installed = nil
-        opts.automatic_installation = false
-      end,
-    },
-
-    {
-      "nvim-telescope/telescope.nvim",
-      branch = "0.1.x",
-      dependencies = { "nvim-lua/plenary.nvim" },
-      init = function()
-        -- 1. Disable highlighting for certain filetypes
-        -- 2. Ignore files larger than a certain filesize
-        local previewers = require("telescope.previewers")
-
-        local _bad = { ".*%.csv", ".*%.min.js" } -- Put all filetypes that slow you down in this array
-        local filesize_threshold = 300 * 1024 -- 300KB
-        local bad_files = function(filepath)
-          for _, v in ipairs(_bad) do
-            if filepath:match(v) then
-              return false
-            end
-          end
-          return true
-        end
-
-        local new_maker = function(filepath, bufnr, opts)
-          opts = opts or {}
-          if opts.use_ft_detect == nil then
-            opts.use_ft_detect = true
-          end
-
-          -- 1. Check if the file is in the bad_files array, and if so, don't highlight it
-          opts.use_ft_detect = opts.use_ft_detect == false and false or bad_files(filepath)
-
-          -- 2. Check the file size, and ignore it if it's too big(preview nothing).
-          filepath = vim.fn.expand(filepath)
-          vim.loop.fs_stat(filepath, function(_, stat)
-            if not stat then
-              return
-            end
-            if stat.size > filesize_threshold then
-              return
-            else
-              previewers.buffer_previewer_maker(filepath, bufnr, opts)
-            end
-          end)
-        end
-
-        require("telescope").setup({
-          defaults = {
-            buffer_previewer_maker = new_maker,
-          },
-        })
-      end,
-    },
-  },
-
-  -- Configure require("lazy").setup() options
-  lazy = {
-    defaults = { lazy = true },
-    performance = {
-      rtp = {
-        -- customize default disabled vim plugins
-        disabled_plugins = {},
-      },
-    },
-  },
-
-  -- https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md
-  lsp = {
-    config = {
-      -- the offset_enconding of clangd will confilicts whit null-ls
-      -- so we need to manually set it to utf-8
-      clangd = {
-        capabilities = {
-          offsetEncoding = "utf-8",
-        },
-      },
-    },
-    -- enable servers that installed by home-manager instead of mason
-    servers = {
-      ---- Frontend & NodeJS
-      "tsserver",   -- typescript/javascript language server
-      "tailwindcss", -- tailwindcss language server
-      "html",       -- html language server
-      "cssls",      -- css language server
-      "prismals",   -- prisma language server
-      "volar",      -- vue language server
-      ---- Configuration Language
-      "marksman",   -- markdown ls
-      "jsonls",     -- json language server
-      "yamlls",     -- yaml language server
-      "taplo",      -- toml language server
-      ---- Backend
-      "lua_ls",     -- lua
-      "gopls",      -- go
-      "rust_analyzer", -- rust
-      "pyright",    -- python
-      "ruff_lsp",   -- extremely fast Python linter and code transformation
-      "jdtls",      -- java
-      "nil_ls",     -- nix language server
-      "bufls",      -- protocol buffer language server
-      "zls",        -- zig language server
-      ---- HDL
-      "verible",    -- verilog language server
-      ---- Operation & Cloud Nativautoindente
-      "bashls",     -- bash
-      "cmake",      -- cmake language server
-      "clangd",     -- c/c++
-      "dockerls",   -- dockerfile
-      "jsonnet_ls", -- jsonnet language server
-      "terraformls", -- terraform hcl
-    },
-    formatting = {
-      disabled = {},
-      format_on_save = {
-        enabled = true,
-        allow_filetypes = {
-          "go",
-          "jsonnet",
-          "rust",
-          "terraform",
-        },
-      },
-    },
-  },
-}

home/base/desktop/neovim/astronvim_user/mappings.lua

@@ -1,68 +0,0 @@
--- Mapping data with "desc" stored directly by vim.keymap.set().
---
--- Please use this mappings table to set keyboard mapping since this is the
--- lower level configuration and more robust one. (which-key will
--- automatically pick-up stored data by this setting.)
-local utils = require "astronvim.utils"
-
-require("telescope").load_extension("refactoring")
-require("telescope").load_extension("yank_history")
-require("telescope").load_extension("undo")
-
-return {
-  -- normal mode
-  n = {
-    -- second key is the lefthand side of the map
-    -- mappings seen under group name "Buffer"
-    ["<leader>bn"] = { "<cmd>tabnew<cr>", desc = "New tab" },
-    -- quick save
-    ["<C-s>"] = { ":w!<cr>", desc = "Save File" },  -- change description but the same command
-
-    -- Terminal
-    -- NOTE: https://neovim.io/doc/user/builtin.html#jobstart()
-    --   1. If {cmd} is a List it runs directly (no 'shell')
-    --   2. If {cmd} is a String it runs in the 'shell'
-    ["<leader>tp"] = { function() utils.toggle_term_cmd({ cmd = "ipython" }) end, desc = "ToggleTerm python" },
-
-    -- search and replace globally
-    ['<leader>ss'] = {'<cmd>lua require("spectre").toggle()<CR>', desc = "Toggle Spectre" },
-    ['<leader>sw'] = {'<cmd>lua require("spectre").open_visual({select_word=true})<CR>', desc = "Search current word" },
-    ['<leader>sp'] ={'<cmd>lua require("spectre").open_file_search({select_word=true})<CR>', desc = "Search on current file" },
-
-    -- refactoring
-    ["<leader>ri"] = { function() require('refactoring').refactor('Inline Variable') end, desc = "Inverse of extract variable" },
-    ["<leader>rb"] = { function() require('refactoring').refactor('Extract Block') end, desc = "Extract Block" },
-    ["<leader>rbf"] = { function() require('refactoring').refactor('Extract Block To File') end, desc = "Extract Block To File" },
-    ["<leader>rr"] = { function() require('telescope').extensions.refactoring.refactors() end, desc = "Prompt for a refactor to apply" },
-    ["<leader>rp"] = { function() require('refactoring').debug.printf({below = false}) end, desc = "Insert print statement to mark the calling of a function" },
-    ["<leader>rv"] = { function() require('refactoring').debug.print_var() end, desc = "Insert print statement to print a variable" },
-    ["<leader>rc"] = { function() require('refactoring').debug.cleanup({}) end, desc = "Cleanup of all generated print statements" },
-
-    -- yank_history
-    ["<leader>yh"] = { function() require("telescope").extensions.yank_history.yank_history() end, desc = "Preview Yank History" },
-
-    -- undo history
-    ["<leader>uh"] = {"<cmd>Telescope undo<cr>", desc="Telescope undo" },
-
-    -- implementation/definition preview
-    ["gpd"] = { "<cmd>lua require('goto-preview').goto_preview_definition()<CR>", desc="goto_preview_definition" },
-    ["gpt"] = { "<cmd>lua require('goto-preview').goto_preview_type_definition()<CR>", desc="goto_preview_type_definition" },
-    ["gpi"] = { "<cmd>lua require('goto-preview').goto_preview_implementation()<CR>", desc="goto_preview_implementation" },
-    ["gP" ] = {  "<cmd>lua require('goto-preview').close_all_win()<CR>", desc="close_all_win" },
-    ["gpr"] = { "<cmd>lua require('goto-preview').goto_preview_references()<CR>", desc="goto_preview_references" },
-  },
-  -- Visual mode
-  v = {
-    -- search and replace globally
-    ['<leader>sw'] =  {'<esc><cmd>lua require("spectre").open_visual()<CR>', desc = "Search current word" },
-  },
-  -- visual mode(what's the difference between v and x???)
-  x = {
-    -- refactoring
-    ["<leader>ri"] = { function() require('refactoring').refactor('Inline Variable') end, desc = "Inverse of extract variable" },
-    ["<leader>re"] = { function() require('refactoring').refactor('Extract Function') end, desc = "Extracts the selected code to a separate function" },
-    ["<leader>rf"] = { function() require('refactoring').refactor('Extract Function To File') end, desc = "Extract Function To File" },
-    ["<leader>rv"] = { function() require('refactoring').refactor('Extract Variable') end, desc = "Extracts occurrences of a selected expression to its own variable" },
-    ["<leader>rr"] = { function() require('telescope').extensions.refactoring.refactors() end, desc = "Prompt for a refactor to apply" },
-  },
-}

home/base/desktop/neovim/default.nix

@@ -1,160 +0,0 @@
-{
-  pkgs,
-  astronvim,
-  ...
-}:
-###############################################################################
-#
-#  AstroNvim's configuration and all its dependencies(lsp, formatter, etc.)
-#
-#e#############################################################################
-{
-  xdg.configFile = {
-    # astronvim's config
-    "nvim" = {
-      source = astronvim;
-      force = true;
-    };
-
-    # my custom astronvim config, astronvim will load it after base config
-    # https://github.com/AstroNvim/AstroNvim/blob/v3.32.0/lua/astronvim/bootstrap.lua#L15-L16
-    "astronvim/lua/user".source = ./astronvim_user;
-  };
-
-  nixpkgs.config = {
-    programs.npm.npmrc = ''
-      prefix = ''${HOME}/.npm-global
-    '';
-  };
-
-  programs = {
-    neovim = {
-      enable = true;
-
-      defaultEditor = true;
-      viAlias = true;
-      vimAlias = true;
-
-      # currently we use lazy.nvim as neovim's package manager, so comment this one.
-      plugins = with pkgs.vimPlugins; [
-        # search all the plugins using https://search.nixos.org/packages
-        telescope-fzf-native-nvim
-      ];
-
-      # Extra packages only available to nvim(won't pollute the global home environment)
-      extraPackages = with pkgs;
-        [
-          #-- c/c++
-          cmake
-          cmake-language-server
-          gnumake
-          checkmake
-          gcc # c/c++ compiler, required by nvim-treesitter!
-          llvmPackages.clang-unwrapped # c/c++ tools with clang-tools such as clangd
-          lldb
-
-          #-- python
-          nodePackages.pyright # python language server
-          python3Packages.black # python formatter
-          python3Packages.ruff-lsp
-          (python3.withPackages (
-            ps:
-              with ps; [
-                pynvim # Python client and plugin host for Nvim
-
-                ipython
-                pandas
-                requests
-                pyquery
-                pyyaml
-              ]
-          ))
-
-          #-- rust
-          rust-analyzer
-          cargo # rust package manager
-          rustfmt
-
-          #-- zig
-          zls
-
-          #-- nix
-          nil
-          rnix-lsp
-          # nixd
-          statix # Lints and suggestions for the nix programming language
-          deadnix # Find and remove unused code in .nix source files
-          alejandra # Nix Code Formatter
-
-          #-- golang
-          go
-          gomodifytags
-          iferr # generate error handling code for go
-          impl # generate function implementation for go
-          gotools # contains tools like: godoc, goimports, etc.
-          gopls # go language server
-          delve # go debugger
-
-          # -- java
-          jdk17
-          gradle
-          maven
-          spring-boot-cli
-
-          #-- lua
-          stylua
-          lua-language-server
-
-          #-- bash
-          nodePackages.bash-language-server
-          shellcheck
-          shfmt
-
-          #-- javascript/typescript --#
-          nodePackages.nodejs
-          nodePackages.typescript
-          nodePackages.typescript-language-server
-          # HTML/CSS/JSON/ESLint language servers extracted from vscode
-          nodePackages.vscode-langservers-extracted
-          nodePackages."@tailwindcss/language-server"
-
-          #-- CloudNative
-          nodePackages.dockerfile-language-server-nodejs
-          # terraform  # install via brew on macOS
-          terraform-ls
-          jsonnet
-          jsonnet-language-server
-          hadolint # Dockerfile linter
-
-          #-- Others
-          taplo # TOML language server / formatter / validator
-          nodePackages.yaml-language-server
-          sqlfluff # SQL linter
-          actionlint # GitHub Actions linter
-          buf # protoc plugin for linting and formatting
-          proselint # English prose linter
-          guile # scheme language
-
-          #-- Misc
-          tree-sitter # common language parser/highlighter
-          nodePackages.prettier # common code formatter
-          marksman # language server for markdown
-          glow # markdown previewer
-          fzf
-
-          #-- Optional Requirements:
-          gdu # disk usage analyzer, required by AstroNvim
-          ripgrep # fast search tool, required by AstroNvim's '<leader>fw'(<leader> is space key)
-        ]
-        ++ (
-          if pkgs.stdenv.isDarwin
-          then []
-          else [
-            #-- verilog / systemverilog
-            verible
-            gdb
-          ]
-        );
-    };
-  };
-}

home/base/desktop/shell.nix

@@ -1,31 +0,0 @@
-{nushell-scripts, ...}: {
-  programs.bash = {
-    # load the alias file for work
-    bashrcExtra = ''
-      alias_for_work=/etc/agenix/alias-for-work.bash
-      if [ -f $alias_for_work ]; then
-        . $alias_for_work
-      else
-        echo "No alias file found for work"
-      fi
-    '';
-  };
-
-  programs.nushell = {
-    # load the alias file for work
-    # the file must exist, otherwise nushell will complain about it!
-    #
-    # currently, nushell does not support conditional sourcing of files
-    # https://github.com/nushell/nushell/issues/8214
-    extraConfig = ''
-      source /etc/agenix/alias-for-work.nushell
-      use ${nushell-scripts}/custom-completions/git/git-completions.nu *
-      use ${nushell-scripts}/custom-completions/glow/glow-completions.nu *
-      use ${nushell-scripts}/custom-completions/make/make-completions.nu *
-      use ${nushell-scripts}/custom-completions/nix/nix-completions.nu *
-      use ${nushell-scripts}/custom-completions/man/man-completions.nu *
-      use ${nushell-scripts}/custom-completions/cargo/cargo-completions.nu *
-      use ${nushell-scripts}/custom-completions/zellij/zellij-completions.nu *
-    '';
-  };
-}

home/base/desktop/ssh.nix

@@ -1,57 +0,0 @@
-_: {
-  programs.ssh = {
-    enable = true;
-
-    # all my ssh private key are generated by `ssh-keygen -t ed25519 -C "ryan@nickname"`
-    # the config's format:
-    #   Host —  given the pattern used to match against the host name given on the command line.
-    #   HostName — specify nickname or abbreviation for host
-    #   IdentityFile — the location of your SSH key authentication file for the account.
-    # format in details:
-    #   https://www.ssh.com/academy/ssh/config
-    extraConfig = ''
-      # a private key that is used during authentication will be added to ssh-agent if it is running
-      AddKeysToAgent yes
-
-      Host 192.168.*
-        # allow to securely use local SSH agent to authenticate on the remote machine.
-        # It has the same effect as adding cli option `ssh -A user@host`
-        ForwardAgent yes
-        # romantic holds my homelab~
-        IdentityFile ~/.ssh/romantic
-        # Specifies that ssh should only use the identity file explicitly configured above
-        # required to prevent sending default identity files first.
-        IdentitiesOnly yes
-
-      Host gtr5
-        HostName 192.168.5.172
-        Port 22
-
-      Host um560
-        HostName 192.168.5.173
-        Port 22
-
-      Host s500plus
-        HostName 192.168.5.174
-        Port 22
-
-      Host k8s-main
-        HostName 192.168.5.181
-        ForwardAgent yes
-        IdentityFile ~/.ssh/romantic
-        IdentitiesOnly yes
-
-      Host k8s-data1
-        HostName 192.168.5.182
-        ForwardAgent yes
-        IdentityFile ~/.ssh/romantic
-        IdentitiesOnly yes
-
-      Host k8s-data2
-        HostName 192.168.5.183
-        ForwardAgent yes
-        IdentityFile ~/.ssh/romantic
-        IdentitiesOnly yes
-    '';
-  };
-}

home/base/desktop/terminal/README.md

@@ -1,61 +0,0 @@
-# Termianl Emulators
-
-1. kitty: My main terminal emulator.
-2. wezterm: My secondary terminal emulator.
-3. alacritty: Standby terminal.
-
-
-## 'xterm-kitty': unknown terminal type when `ssh` into a remote host or `sudo xxx`
-
-> https://sw.kovidgoyal.net/kitty/faq/#i-get-errors-about-the-terminal-being-unknown-or-opening-the-terminal-failing-or-functional-keys-like-arrow-keys-don-t-work
-
-> https://wezfurlong.org/wezterm/config/lua/config/term.html
-
-kitty set `TERM` to `xterm-kitty` by default, and TUI apps like `viu`, `yazi`, `curses` will try to search in the host's [terminfo(terminal capability data base)](https://linux.die.net/man/5/terminfo) for value of `TERM` to determine the capabilities of the terminal.
-
-But when you `ssh` into a remote host, the remote host is very likely to not have `xterm-kitty` in its terminfo, so you will get this error:
-
-```
-'xterm-kitty': unknown terminal type
-```
-
-Or when you `sudo xxx`, `sudo` won't preserve the `TERM` variable, it will be reset to root's default `TERM` value, which is `xterm` or `xterm-256color` in most linux distributions, so you will get this error:
-
-```
-'xterm-256color': unknown terminal type
-```
-
-or 
-
-```
-Error opening terminal: xterm-kitty.
-```
-
-NixOS preserve the `TERMINFO` and `TERMINFO_DIRS` environment variables, for `root` and the `wheel` group: [nixpkgs/nixos/modules/config/terminfo.nix](https://github.com/NixOS/nixpkgs/blob/nixos-23.11/nixos/modules/config/terminfo.nix#L18)
-
-For nix-darwin, take a look at <https://github.com/LnL7/nix-darwin/wiki/Terminfo-issues>
-
-### Solutions
-
-Simplest solution, it will automatically copy over the terminfo files and also magically enable shell integration on the remote machine: 
-
-```
-kitten ssh user@host
-```
-
-Or if you do not care about kitty's features(such as true color & graphics protocol), you can simply set `TERM` to `xterm-256color`, which is built-in in most linux distributions:
-
-```
-export TERM=xterm-256color
-```
-
-If you need kitty's features, but do not like the magic of `kitten`, you can manually install kitty's terminfo on the remote host:
-
-```bash
-# install on ubuntu / debian
-sudo apt-get install kitty-terminfo
-
-# or copy from local machine
-infocmp -a xterm-kitty | ssh myserver tic -x -o \~/.terminfo /dev/stdin
-```
-

home/base/desktop/terminal/alacritty.nix

@@ -1,113 +0,0 @@
-{
-  pkgs,
-  nur-ryan4yin,
-  ...
-}:
-###########################################################
-#
-# Alacritty Configuration
-#
-# Useful Hot Keys for macOS:
-#   1. Multi-Window: `command + N`
-#   2. Increase Font Size: `command + =` | `command + +`
-#   3. Decrease Font Size: `command + -` | `command + _`
-#   4. Search Text: `command + F`
-#   5. And Other common shortcuts such as Copy, Paste, Cursor Move, etc.
-#
-# Useful Hot Keys for Linux:
-#   1. Increase Font Size: `ctrl + shift + =` | `ctrl + shift + +`
-#   2. Decrease Font Size: `ctrl + shift + -` | `ctrl + shift + _`
-#   3. Search Text: `ctrl + shift + N`
-#   4. And Other common shortcuts such as Copy, Paste, Cursor Move, etc.
-#
-# Note: Alacritty do not have support for Tabs, and any graphic protocol.
-#
-###########################################################
-{
-  xdg.configFile."alacritty/theme_catppuccin.yml".source = "${nur-ryan4yin.packages.${pkgs.system}.catppuccin-alacritty}/catppuccin-mocha.yml";
-  programs.alacritty = {
-    enable = true;
-  };
-
-  xdg.configFile."alacritty/alacritty.yml".text =
-    ''
-      import:
-        # all alacritty themes can be found at
-        #    https://github.com/alacritty/alacritty-theme
-        - ~/.config/alacritty/theme_catppuccin.yml
-
-      window:
-        # Background opacity
-        #
-        # Window opacity as a floating point number from `0.0` to `1.0`.
-        # The value `0.0` is completely transparent and `1.0` is opaque.
-        opacity: 0.93
-
-        # Startup Mode (changes require restart)
-        #
-        # Values for `startup_mode`:
-        #   - Windowed
-        #   - Maximized
-        #   - Fullscreen
-        #
-        # Values for `startup_mode` (macOS only):
-        #   - SimpleFullscreen
-        startup_mode: Maximized
-
-        # Allow terminal applications to change Alacritty's window title.
-        dynamic_title: true
-
-        # Make `Option` key behave as `Alt` (macOS only):
-        #   - OnlyLeft
-        #   - OnlyRight
-        #   - Both
-        #   - None (default)
-        option_as_alt: Both
-
-      scrolling:
-        # Maximum number of lines in the scrollback buffer.
-        # Specifying '0' will disable scrolling.
-        history: 10000
-
-        # Scrolling distance multiplier.
-        #multiplier: 3
-
-      # Font configuration
-      font:
-        # Normal (roman) font face
-        bold:
-          family: JetBrainsMono Nerd Font
-        italic:
-          family: JetBrainsMono Nerd Font
-        normal:
-          family: JetBrainsMono Nerd Font
-        bold_italic:
-          # Font family
-          #
-          # If the bold italic family is not specified, it will fall back to the
-          # value specified for the normal font.
-          family: JetBrainsMono Nerd Font
-      shell:
-        #  To resolve issues:
-        #    1. https://github.com/ryan4yin/nix-config/issues/26
-        #    2. https://github.com/ryan4yin/nix-config/issues/8
-        #  Spawn a nushell in login mode via `bash`
-        program: ${pkgs.bash}/bin/bash
-        args:
-          - --login
-          - -c
-          - 'nu --login --interactive'
-    ''
-    + (
-      if pkgs.stdenv.isDarwin
-      then ''
-        # Point size
-        size: 14
-      ''
-      else ''
-        # holder identation
-          # Point size
-          size: 13
-      ''
-    );
-}

home/base/desktop/terminal/kitty.nix

@@ -1,66 +0,0 @@
-{
-  lib,
-  pkgs,
-  ...
-}:
-###########################################################
-#
-# Kitty Configuration
-#
-# Useful Hot Keys for macOS:
-#   1. New Tab: `command + t`
-#   2. Close Tab: `command + w`
-#   3. Switch Tab: `shift + command + [` | `shift + command + ]`
-#   4. Increase Font Size: `command + =` | `command + +`
-#   5. Decrease Font Size: `command + -` | `command + _`
-#   6. And Other common shortcuts such as Copy, Paste, Cursor Move, etc.
-#   7. Search in the current window(show_scrollback): `ctrl + shift + h`
-#          This will open a pager, it's defined by `scrollback_pager`, default is `less`
-#
-#
-# Useful Hot Keys for Linux:
-#   1. New Tab: `ctrl + shift + t`
-#   2. Close Tab: `ctrl + shift + q`
-#   3. Switch Tab: `ctrl + shift + right` | `ctrl + shift + left`
-#   4. Increase Font Size: `ctrl + shift + =` | `ctrl + shift + +`
-#   5. Decrease Font Size: `ctrl + shift + -` | `ctrl + shift + _`
-#   6. And Other common shortcuts such as Copy, Paste, Cursor Move, etc.
-#
-###########################################################
-{
-  programs.kitty = {
-    enable = true;
-    # kitty has catppuccin theme built-in,
-    # all the built-in themes are packaged into an extra package named `kitty-themes`
-    # and it's installed by home-manager if `theme` is specified.
-    theme = "Catppuccin-Mocha";
-    font = {
-      name = "JetBrainsMono Nerd Font";
-      # use different font size on macOS
-      size =
-        if pkgs.stdenv.isDarwin
-        then 14
-        else 13;
-    };
-
-    keybindings = {
-      "ctrl+shift+m" = "toggle_maximized";
-    };
-
-    settings = {
-      background_opacity = "0.93";
-      macos_option_as_alt = true; # Option key acts as Alt on macOS
-      scrollback_lines = 10000;
-      enable_audio_bell = false;
-      tab_bar_edge = "top"; # tab bar on top
-      #  To resolve issues:
-      #    1. https://github.com/ryan4yin/nix-config/issues/26
-      #    2. https://github.com/ryan4yin/nix-config/issues/8
-      #  Spawn a nushell in login mode via `bash`
-      shell = "${pkgs.bash}/bin/bash --login -c 'nu --login --interactive'";
-    };
-
-    # macOS specific settings
-    darwinLaunchOptions = ["--start-as=maximized"];
-  };
-}

home/base/desktop/terminal/wezterm.nix

@@ -1,104 +0,0 @@
-{pkgs, ...}:
-###########################################################
-#
-# Wezterm Configuration
-#
-# Default Keybindings: https://wezfurlong.org/wezterm/config/default-keys.html
-#
-###########################################################
-{
-  # wezterm has catppuccin theme built-in,
-  # it's not necessary to install it separately.
-
-  # we can add wezterm as a flake input once this PR is merged:
-  #    https://github.com/wez/wezterm/pull/3547
-
-  programs.wezterm =
-    {
-      enable = true;
-
-      # TODO: Fix: https://github.com/wez/wezterm/issues/4483
-      # package = pkgs.wezterm.override { };
-
-      extraConfig = let
-        fontsize =
-          if pkgs.stdenv.isDarwin
-          then "14.0"
-          else "13.0";
-      in ''
-        -- Pull in the wezterm API
-        local wezterm = require 'wezterm'
-
-        -- This table will hold the configuration.
-        local config = {}
-
-        -- In newer versions of wezterm, use the config_builder which will
-        -- help provide clearer error messages
-        if wezterm.config_builder then
-          config = wezterm.config_builder()
-        end
-
-        wezterm.on('toggle-opacity', function(window, pane)
-          local overrides = window:get_config_overrides() or {}
-          if not overrides.window_background_opacity then
-            overrides.window_background_opacity = 0.93
-          else
-            overrides.window_background_opacity = nil
-          end
-          window:set_config_overrides(overrides)
-        end)
-
-        wezterm.on('toggle-maximize', function(window, pane)
-          window:maximize()
-        end)
-
-        -- This is where you actually apply your config choices
-        config.color_scheme = "Catppuccin Mocha"
-        config.font = wezterm.font_with_fallback {
-          "JetBrainsMono Nerd Font",
-          "FiraCode Nerd Font",
-
-          -- To avoid 'Chinese characters displayed as variant (Japanese) glyphs'
-          "Source Han Sans SC",
-          "Source Han Sans TC"
-        }
-
-        config.hide_tab_bar_if_only_one_tab = true
-        config.scrollback_lines = 10000
-        config.enable_scroll_bar = true
-
-        config.keys = {
-          -- toggle opacity(CTRL + SHIFT + B)
-          {
-            key = 'B',
-            mods = 'CTRL',
-            action = wezterm.action.EmitEvent 'toggle-opacity',
-          },
-          {
-            key = 'M',
-            mods = 'CTRL',
-            action = wezterm.action.EmitEvent 'toggle-maximize',
-          },
-        }
-        config.font_size = ${fontsize}
-
-        -- To resolve issues:
-        --   1. https://github.com/ryan4yin/nix-config/issues/26
-        --   2. https://github.com/ryan4yin/nix-config/issues/8
-        -- Spawn a nushell in login mode via `bash`
-        config.default_prog = { '${pkgs.bash}/bin/bash', '--login', '-c', 'nu --login --interactive' }
-
-        return config
-      '';
-    }
-    // (
-      if pkgs.stdenv.isDarwin
-      then {
-        # install wezterm via homebrew on macOS to avoid compilation, dummy package here.
-        package = pkgs.hello;
-        enableBashIntegration = false;
-        enableZshIntegration = false;
-      }
-      else {}
-    );
-}

home/base/desktop/yazi.nix

@@ -1,10 +0,0 @@
-{pkgs-unstable, ...}: {
-  # terminal file manager
-  programs.yazi = {
-    enable = true;
-    package = pkgs-unstable.yazi;
-    enableBashIntegration = true;
-    # TODO: nushellIntegration is broken on release-23.11, wait for master's fix to be released
-    enableNushellIntegration = false;
-  };
-}

home/base/gui/default.nix

@@ -1,3 +1,4 @@
-{mylib, ...}: {
+{ mylib, ... }:
+{
   imports = mylib.scanPaths ./.;
 }

home/base/gui/dev-tools.nix

@@ -0,0 +1,20 @@
+{ pkgs, llm-agents, ... }:
+{
+  home.packages =
+    with pkgs;
+    [
+      mitmproxy # http/https proxy tool
+      wireshark # network analyzer
+    ]
+    # AI Agent Tools
+    ++ (with llm-agents.packages.${pkgs.stdenv.hostPlatform.system}; [
+      # Agents
+      codex
+      cursor-cli
+      claude-code
+      opencode
+
+      # Utilities
+      rtk # CLI proxy that reduces LLM token consumption
+    ]);
+}

home/base/gui/terminal/README.md

@@ -0,0 +1,84 @@
+# Terminal Emulators
+
+I used to spend a lot of time on terminal emulators, to make them match my taste, but now I found
+that it's not worth it, **Zellij can provide a user-friendly and unified user experience for all
+terminal emulators! without any pain**!
+
+Currently, I only use the most basic features of terminal emulators, such as true color, graphics
+protocol, etc. Other features such as tabs, scrollback buffer, select/search/copy, etc, are all
+provided by zellij!
+
+My current terminal emulators are:
+
+1. kitty: My main terminal emulator.
+   1. to select/copy a large mount of text, We should do some tricks via kitty's `scrollback_pager`
+      with neovim, it's really painful: <https://github.com/kovidgoyal/kitty/issues/719>
+2. foot: A fast, lightweight and minimalistic Wayland terminal emulator.
+   1. foot only do the things a terminal emulator should do, no more, no less.
+   1. It's really suitable for tiling window manager or zellij users!
+3. alacritty: A cross-platform, GPU-accelerated terminal emulator.
+   1. alacritty is really fast, I use it as a backup terminal emulator on all my desktops.
+
+## 'xterm-kitty': unknown terminal type when `ssh` into a remote host or `sudo xxx`
+
+> https://sw.kovidgoyal.net/kitty/faq/#i-get-errors-about-the-terminal-being-unknown-or-opening-the-terminal-failing-or-functional-keys-like-arrow-keys-don-t-work
+
+> https://wezfurlong.org/wezterm/config/lua/config/term.html
+
+kitty set `TERM` to `xterm-kitty` by default, and TUI apps like `viu`, `yazi`, `curses` will try to
+search in the host's [terminfo(terminal capability data base)](https://linux.die.net/man/5/terminfo)
+for value of `TERM` to determine the capabilities of the terminal.
+
+But when you `ssh` into a remote host, the remote host is very likely to not have `xterm-kitty` in
+its terminfo, so you will get this error:
+
+```
+'xterm-kitty': unknown terminal type
+```
+
+Or when you `sudo xxx`, `sudo` won't preserve the `TERM` variable, it will be reset to root's
+default `TERM` value, which is `xterm` or `xterm-256color` in most linux distributions, so you will
+get this error:
+
+```
+'xterm-256color': unknown terminal type
+```
+
+or
+
+```
+Error opening terminal: xterm-kitty.
+```
+
+NixOS preserve the `TERMINFO` and `TERMINFO_DIRS` environment variables, for `root` and the `wheel`
+group:
+[nixpkgs/nixos/modules/config/terminfo.nix](https://github.com/NixOS/nixpkgs/blob/nixos-25.11/nixos/modules/config/terminfo.nix#L18)
+
+For nix-darwin, take a look at <https://github.com/LnL7/nix-darwin/wiki/Terminfo-issues>
+
+### Solutions
+
+Simplest solution, it will automatically copy over the terminfo files and also magically enable
+shell integration on the remote machine:
+
+```
+kitten ssh user@host
+```
+
+Or if you do not care about kitty's features(such as true color & graphics protocol), you can simply
+set `TERM` to `xterm-256color`, which is built-in in most linux distributions:
+
+```
+export TERM=xterm-256color
+```
+
+If you need kitty's features, but do not like the magic of `kitten`, you can manually install
+kitty's terminfo on the remote host:
+
+```bash
+# install on ubuntu / debian
+sudo apt-get install kitty-terminfo
+
+# or copy from local machine
+infocmp -a xterm-kitty | ssh myserver tic -x -o \~/.terminfo /dev/stdin
+```

home/base/gui/terminal/alacritty/default.nix

@@ -0,0 +1,71 @@
+{
+  pkgs,
+  ...
+}:
+###########################################################
+#
+# Alacritty Configuration
+#
+# Useful Hot Keys for macOS:
+#   1. Multi-Window: `command + N`
+#   2. Increase Font Size: `command + =` | `command + +`
+#   3. Decrease Font Size: `command + -` | `command + _`
+#   4. Search Text: `command + F`
+#   5. And Other common shortcuts such as Copy, Paste, Cursor Move, etc.
+#
+# Useful Hot Keys for Linux:
+#   1. Increase Font Size: `ctrl + shift + =` | `ctrl + shift + +`
+#   2. Decrease Font Size: `ctrl + shift + -` | `ctrl + shift + _`
+#   3. Search Text: `ctrl + shift + N`
+#   4. And Other common shortcuts such as Copy, Paste, Cursor Move, etc.
+#
+# Note: Alacritty do not have support for Tabs, and any graphic protocol.
+#
+###########################################################
+{
+  programs.alacritty = {
+    enable = true;
+    # https://alacritty.org/config-alacritty.html
+    settings = {
+      window = {
+        opacity = 0.93;
+        startup_mode = "Maximized"; # Maximized window
+        dynamic_title = true;
+        option_as_alt = "Both"; # Option key acts as Alt on macOS
+        decorations = "None"; # Show neither borders nor title bar
+      };
+      scrolling = {
+        history = 10000;
+      };
+      font = {
+        bold = {
+          family = "Maple Mono NF CN";
+        };
+        italic = {
+          family = "Maple Mono NF CN";
+        };
+        normal = {
+          family = "Maple Mono NF CN";
+        };
+        bold_italic = {
+          family = "Maple Mono NF CN";
+        };
+        size = 13;
+      };
+      terminal = {
+        # Spawn a nushell in login mode via `bash`
+        shell = {
+          program = "${pkgs.bash}/bin/bash";
+          args = [
+            "--login"
+            "-c"
+            "nu --login --interactive"
+          ];
+        };
+        # Controls the ability to write to the system clipboard with the OSC 52 escape sequence.
+        # It's used by zellij to copy text to the system clipboard.
+        osc52 = "CopyPaste";
+      };
+    };
+  };
+}

home/base/gui/terminal/default.nix

@@ -1,3 +1,4 @@
-{mylib, ...}: {
+{ mylib, ... }:
+{
   imports = mylib.scanPaths ./.;
 }