refactor: move system configuration into its own file

system.nix

@@ -0,0 +1,124 @@
+{
+  pkgs,
+  attic,
+  agenix,
+  fenix,
+  catppuccin,
+  ...
+}: {
+  environment.systemPackages = with pkgs; [
+    nil
+    alejandra
+    nixpkgs-fmt
+    attic-client
+    cachix
+    direnv
+
+    fenix.packages.${system}.stable.defaultToolchain
+    ccache
+    ccacheWrapper
+    deno
+    fnm
+    go
+    bun
+
+    pkgs."_1password"
+    age
+    pkgs.agenix
+    asciinema
+    bat
+    btop
+    cloudflared
+    doggo
+    doppler
+    du-dust
+    exa
+    exiftool
+    fd
+    ffmpeg
+    fish
+    flyctl
+    fzf
+    gh
+    git
+    git-lfs
+    gen-license
+    gum
+    helix
+    hyperfine
+    jq
+    just
+    spicetify-cli
+    mkcert
+    nerdfix
+    opencv
+    pipx
+    pscale
+    pyenv
+    railway
+    redis
+    silicon
+    starship
+    tealdeer
+    tokei
+    vhs
+    vivid
+    xh
+    zoxide
+  ];
+
+  services.nix-daemon.enable = true;
+  nix.package = pkgs.nix;
+
+  nix.settings = {
+    experimental-features = "nix-command flakes";
+    build-users-group = "nixbld";
+    trusted-users = ["ryanccn"];
+    auto-optimise-store = true;
+    extra-platforms = ["x86_64-darwin" "aarch64-darwin"];
+
+    extra-sandbox-paths = ["/nix/var/cache/ccache"];
+
+    extra-substituters = [
+      "https://nix-community.cachix.org"
+    ];
+    extra-trusted-public-keys = [
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
+  };
+
+  nixpkgs = {
+    overlays = [
+      attic.overlays.default
+      agenix.overlays.default
+      fenix.overlays.default
+      (import ./overlays/ccache-wrapper.nix)
+      (import ./overlays/gen-license.nix)
+    ];
+
+    config.allowUnfree = true;
+    hostPlatform = "aarch64-darwin";
+  };
+
+  programs.zsh.enable = true;
+  programs.fish.enable = true;
+  programs.fish.shellInit = ''
+    for p in /run/current-system/sw/bin
+      if not contains $p $fish_user_paths
+        set -g fish_user_paths $p $fish_user_paths
+      end
+    end
+  '';
+
+  home-manager.useGlobalPkgs = true;
+  home-manager.useUserPackages = true;
+  home-manager.extraSpecialArgs = {
+    agenixModule = agenix.homeManagerModules.age;
+    ctpModule = catppuccin.homeManagerModules.catppuccin;
+  };
+
+  users.users.ryanccn.home = "/Users/ryanccn";
+  home-manager.users.ryanccn = import ./home.nix;
+
+  system.stateVersion = 4;
+}