feat: redesign the project structure

home/common/alacritty.nix

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+{ pkgs, ... }:
+
+# terminals
+
+let
+  font = "JetBrainsMono Nerd Font";
+in
+{
+  programs.alacritty = {
+    enable = true;
+    settings = {
+      window.opacity = 0.95;
+      window.dynamic_padding = true;
+      window.padding = {
+        x = 5;
+        y = 5;
+      };
+      scrolling.history = 10000;
+
+      font = {
+        normal.family = font;
+        bold.family = font;
+        italic.family = font;
+        size = 11;
+      };
+
+    };
+  };
+}

home/common/core.nix

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+{config, pkgs, ...}: let
+  d = config.xdg.dataHome;
+  c = config.xdg.configHome;
+  cache = config.xdg.cacheHome;
+in rec {
+  home.packages = with pkgs; [
+    neofetch
+    nnn          # terminal file manager
+
+    # archives
+    zip
+    xz
+    unzip
+    p7zip
+
+    # utils
+    ripgrep  # recursively searches directories for a regex pattern
+    jq       # A lightweight and flexible command-line JSON processor
+    yq-go    # yaml processer https://github.com/mikefarah/yq
+    exa # A modern replacement for ‘ls’
+
+    # networking tools
+    mtr   # A network diagnostic tool
+    iperf3
+    nmap
+    socat
+    ldns  # replacement of dig, it provide the command `drill`
+    aria2 # A lightweight multi-protocol & multi-source command-line download utility
+    socat # replacement of openbsd-netcat
+
+    # misc
+    file
+    which
+    tree
+    gnused
+    gnutar
+    gawk
+    p7zip
+    xz
+    zstd
+
+    # productivity
+    hugo
+  ];
+
+  programs = {
+    # A terminal multiplexer
+    tmux = {
+      enable = true;
+    };
+
+    # a cat(1) clone with syntax highlighting and Git integration.
+    bat = {
+      enable = true;
+      config = {
+        pager = "less -FR";
+        theme = "Catppuccin-mocha";
+      };
+      themes = {
+        Catppuccin-mocha = builtins.readFile (pkgs.fetchurl {
+          url = "https://raw.githubusercontent.com/catppuccin/bat/main/Catppuccin-mocha.tmTheme";
+          hash = "sha256-qMQNJGZImmjrqzy7IiEkY5IhvPAMZpq0W6skLLsng/w=";
+        });
+      };
+    };
+
+    # skim provides a single executable: sk.
+    # Basically anywhere you would want to use grep, try sk instead.
+    skim = {
+      enable = true;
+      enableBashIntegration = true;
+    };
+  };
+
+  services = {
+    # syncthing.enable = true;
+  };
+
+  programs.bash = {
+    enable = true;
+    enableCompletion = true;
+    bashrcExtra = ''
+      export PATH="$PATH:$HOME/bin:$HOME/.local/bin:$HOME/go/bin"
+    '';
+  };
+
+  # add environment variables
+  systemd.user.sessionVariables = {
+    # clean up ~
+    LESSHISTFILE = cache + "/less/history";
+    LESSKEY = c + "/less/lesskey";
+    WINEPREFIX = d + "/wine";
+
+    # set this variable make i3 failed to start
+    # related issue:
+    #   https://github.com/sddm/sddm/issues/871
+    # XAUTHORITY = "$XDG_RUNTIME_DIR/Xauthority";
+
+    # set default applications
+    BROWSER = "firefox";
+    TERMINAL = "alacritty";
+
+    # enable scrolling in git diff
+    DELTA_PAGER = "less -R";
+
+    MANPAGER = "sh -c 'col -bx | bat -l man -p'";
+  };
+
+  home.sessionVariables = systemd.user.sessionVariables;
+
+  home.shellAliases = {
+    k = "kubectl";
+
+    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()))'";
+  };
+}

home/common/default.nix

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+{config, pkgs, ...}: let
+  d = config.xdg.dataHome;
+  c = config.xdg.configHome;
+  cache = config.xdg.cacheHome;
+in rec {
+  imports = [
+    ./nushell
+
+    ./alacritty.nix
+    ./core.nix
+    ./development.nix
+    ./git.nix
+    ./media.nix
+    ./starship.nix
+  ];
+
+}

home/common/development.nix

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+{config, pkgs, nil, ...}: 
+
+{
+  home.packages = with pkgs; [
+    nil.packages."${pkgs.system}".default  # nix language server
+
+    # IDE
+    insomnia
+    jetbrains.pycharm-community
+    # jetbrains.idea-community
+
+    # cloud native
+    docker-compose
+    kubectl
+    kubernetes-helm
+    terraform
+    pulumi
+
+    # cloud provider
+    awscli
+
+    # DO NOT install build tools for C/C++, set it per project by devShell instead
+    gnumake  # used by this repo, to simplify the deployment
+    clang-tools
+    clang-analyzer
+    # lldb
+    # cmake
+    # autoconf
+    # automake
+    # bison
+    # cppcheck
+    # fakeroot
+    # flex
+    # gettext
+    # groff
+    # libtool
+    # m4
+    # patch
+    # pkgconf
+    # texinfo
+    # binutils
+
+    # Golang
+    delve
+    go
+    go-outline
+    go-tools
+    go2nix
+    gomodifytags
+    gopls
+    gotests
+    impl
+
+    # Rust
+    rustup
+
+    # python
+    (python3.withPackages(ps: with ps; [
+      ipython
+      pandas
+      requests
+      pyquery
+    ]))
+    # need to run `conda-install` before using it
+    # need to run `conda-shell` before using command `conda`
+    conda
+
+    # db related
+    dbeaver
+    mycli
+    pgcli
+
+    # embedded development
+    minicom
+  ];
+
+  programs = {
+    # modern vim
+    neovim = {
+      enable = true;
+      extraConfig = ''
+        set number relativenumber
+      '';
+    };
+
+    direnv = {
+    enable = true;
+    nix-direnv.enable = true;
+    enableZshIntegration = true;
+    };
+  };
+
+  # GitHub CLI tool
+  programs.gh = {
+    enable = true;
+  };
+}

home/common/git.nix

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+{
+  pkgs,
+  ...
+}: {
+  programs.git = {
+    enable = true;
+    lfs.enable = true;
+
+    userName = "Ryan Yin";
+    userEmail = "xiaoyin_c@qq.com";
+
+    extraConfig = {
+      pull = {
+        rebase = true;
+      };
+    };
+
+    # signing = {
+    #   key = "xxx";
+    #   signByDefault = true;
+    # };
+
+    delta = {
+      enable = true;
+      options = {
+        features = "side-by-side";
+      };
+    };
+  };
+}

home/common/media.nix

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+{
+  pkgs,
+  config,
+  ...
+}:
+# processing audio/video
+{
+  home.packages = with pkgs; [
+    ffmpeg-full
+
+    # images
+    viu  # terminal image viewer
+    imv  # simple image viewer
+    imagemagick
+    graphviz
+  ];
+}

home/common/nushell/default.nix

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+{
+  programs.nushell = {
+    enable = true;
+    configFile.source = ./config.nu;
+    envFile.source = ./env.nu;
+  };
+}

home/common/nushell/env.nu

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+# Nushell Environment Config File
+
+# Specifies how environment variables are:
+# - converted from a string to a value on Nushell startup (from_string)
+# - converted from a value back to a string when running external commands (to_string)
+# Note: The conversions happen *after* config.nu is loaded
+let-env ENV_CONVERSIONS = {
+  "PATH": {
+    from_string: { |s| $s | split row (char esep) | path expand -n }
+    to_string: { |v| $v | path expand -n | str join (char esep) }
+  }
+  "Path": {
+    from_string: { |s| $s | split row (char esep) | path expand -n }
+    to_string: { |v| $v | path expand -n | str join (char esep) }
+  }
+}
+
+# Directories to search for scripts when calling source or use
+#
+# By default, <nushell-config-dir>/scripts is added
+let-env NU_LIB_DIRS = [
+    ($nu.config-path | path dirname | path join 'scripts')
+]
+
+# Directories to search for plugin binaries when calling register
+#
+# By default, <nushell-config-dir>/plugins is added
+let-env NU_PLUGIN_DIRS = [
+    ($nu.config-path | path dirname | path join 'plugins')
+]
+
+# To add entries to PATH (on Windows you might use Path), you can use the following pattern:
+# let-env PATH = ($env.PATH | split row (char esep) | prepend '/some/path')
+
+mkdir ~/.cache/starship
+starship init nu | sed "s/size -c/size/" | save ~/.cache/starship/init.nu

home/common/starship.nix

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+{config, ...}: {
+  programs.starship = {
+    enable = true;
+    settings = {
+      character = {
+        success_symbol = "[›](bold green)";
+        error_symbol = "[›](bold red)";
+      };
+    };
+  };
+}