# Nix Configuration

This repository is home to the nix code that builds my systems.

## TODO

- [ ] Enable disk encryption to enhance data security
- [ ] `Xcursor.size` does not take effect in i3

## Why Nix?

Nix allows for easy-to-manage, collaborative, reproducible deployments. This means that once something is setup and configured once, it works forever. If someone else shares their configuration, anyone can make use of it.

**Want to know Nix in detail? Looking for a beginner-friendly tutorial or best practices? Check out [NixOS & Nix Flakes Book - 🛠️ ❤️ An unofficial & opinionated :book: for beginners](https://github.com/ryan4yin/nixos-and-flakes-book)!**

## Screenshots

![](/_img/astronvim_2023-07-13_00-39.webp)

![](/_img/nix-distributed-building.webp)

![](/_img/nix-distributed-building-log.webp)

## Hosts

```shell
› tree hosts
hosts
├── harmonica  # my MacBook Pro 2020 13-inch, for work.
└── idols
    ├── ai         # my main computer, with NixOS + I5-13600KF + RTX 4090 GPU, for gaming & daily use.
    ├── aquamarine # my NixOS virtual machine with R9-5900HX(8C16T), for distributed building & testing.
    ├── kana       # yet another NixOS vm on another physical machine with R5-5625U(6C12T).
    └── ruby       # another NixOS vm on another physical machine with R7-5825U(8C16T).
```

## How to Deploy this Flake?

> Note: you should NOT deploy this flake directly on your machine, it contains my hardware information and personal information which is not suitable for you. You may use this repo as a reference to build your own configuration.

After installing NixOS with `nix-command` & `flake` enabled, follow the steps below to deploy this flake.

For NixOS, use the following commands:

```bash
# deploy one of the configuration based on the hostname
sudo nixos-rebuild switch --flake .

# we can also deploy using `make`, which is defined in Makefile
make deploy
```

For MacOS, use the following commands:

```bash
# deploy the darwin configuration(harmonicia)
make darwin

# deploy with details
make darwin-debug
```

## Install Apps from Flatpak

We can install apps from flathub, which has a lot of apps that are not supported well in nixpkgs.

```bash
# Add the Flathub repository
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

# install apps from flathub
flatpak install netease-cloud-music-gtk

# install 3d printer slicer - cura
flatpak install flathub com.ultimaker.cura

# or you can search apps from flathub
flatpak search <keyword>
# search on website is also supported: https://flathub.org/
```

## 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 the remote host, using the ssh key we added in step 1
#    and the username defaults to `$USER`, it's `ryan` in my case.
nixos-rebuild --flake .#aquamarine --target-host aquamarine --build-host aquamarine switch --use-remote-sudo --verbose

# or we can replace the command above with the following command, which is defined in Makefile
make aqua
```

The commands above will build & deploy the configuration to `aquamarine`, the build process will be executed on `aquamarine` too, and the `--use-remote-sudo` option indicates that we will use `sudo` on the remote host.

## Other Tips

1. alacritty - Multi-Window on macOS: `command + N`

## Other Interesting Dotfiles

Other dotfiles && docs that inspired me:

- [NixOS-CN/NixOS-CN-telegram](https://github.com/NixOS-CN/NixOS-CN-telegram)
- [Tips&Tricks for NixOS Desktop](https://discourse.nixos.org/t/tips-tricks-for-nixos-desktop/28488/2)
- [notwidow/hyprland](https://github.com/notwidow/hyprland): hyprland configuration
- [denisse-dev/dotfiles](https://github.com/denisse-dev/dotfiles)
- [notusknot/dotfiles-nix](https://github.com/notusknot/dotfiles-nix)
- [xddxdd/nixos-config](https://github.com/xddxdd/nixos-config)
- [bobbbay/dotfiles](https://github.com/bobbbay/dotfiles)
- [gytis-ivaskevicius/nixfiles](https://github.com/gytis-ivaskevicius/nixfiles)
- [fufexan/dotfiles](https://github.com/fufexan/dotfiles)
- [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)
- [maxbrunet/dotfiles](https://github.com/maxbrunet/dotfiles): astronvim with nix flakes.