{
  description = "nix-darwin system flake";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-25.11-darwin";
    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    nix-darwin.url = "github:nix-darwin/nix-darwin/nix-darwin-25.11";
    nix-darwin.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = inputs@{ self, nix-darwin, nixpkgs, nixpkgs-unstable }:
  let
    configuration = { pkgs, ... }: {
      environment.systemPackages = let
        # TODO is there a better way to do this?
        pkgsUnstable = import nixpkgs-unstable {
          localSystem = pkgs.stdenv.system;
          config.allowUnfree = true;
        };
      in
        [
          pkgsUnstable.claude-code
          pkgsUnstable.jujutsu
        ];

      nix.settings.experimental-features = "nix-command flakes";

      system.primaryUser = "joe";

      # Set Git commit hash for darwin-version.
      system.configurationRevision = self.rev or self.dirtyRev or null;

      # Used for backwards compatibility, please read the changelog before changing.
      # $ darwin-rebuild changelog
      system.stateVersion = 6;

      # The platform the configuration will be used on.
      nixpkgs.hostPlatform = "aarch64-darwin";

      nixpkgs.config.allowUnfree = true;
    };

    apps = { pkgs, ... }: {
      homebrew = {
        enable = true;
        onActivation.cleanup = "uninstall";
        brews = [ "mas" ];
        casks = [ "linearmouse" ];
        masApps = {
          "Kagi for Safari" = 1622835804;
          "KeePassium (KeePass passwords)" = 1435127111;
          Xcode = 497799835;
        };
      };
    };
  in
  {
    darwinConfigurations.mojo = nix-darwin.lib.darwinSystem {
      modules = [ configuration apps ];
    };
  };
}