{
      config,
      pkgs,
      ...
    }: {
      system.primaryUser = "admin";

      environment.systemPackages = with pkgs; [
        vim
        neovim
        alacritty
	element-desktop
        mkalias
	flutter
	pass
      ];

      homebrew = {
        enable = true;
        casks = [
	];
        brews = [
        ];
	#masApps = [];
        onActivation.cleanup = "zap";
        onActivation.autoUpdate = true;
        onActivation.upgrade = true;
      };

      # Necessary for using flakes on this system.
      nix.settings.experimental-features = "nix-command flakes";
      programs.zsh.enable = true;

      # Enable alternative shell support in nix-darwin.
      # programs.fish.enable = true;

      system.activationScripts.applications.text = let
        env = pkgs.buildEnv {
          name = "system-applications";
          paths = config.environment.systemPackages;
          pathsToLink = "/Applications";
        };
      in
        pkgs.lib.mkForce ''
          # Set up applications.
          echo "setting up /Applications..." >&2
          rm -rf /Applications/Nix\ Apps
          mkdir -p /Applications/Nix\ Apps
          find ${env}/Applications -maxdepth 1 -type l -exec readlink '{}' + |
          while read -r src; do
            app_name=$(basename "$src")
            echo "copying $src" >&2
            ${pkgs.mkalias}/bin/mkalias "$src" "/Applications/Nix Apps/$app_name"
          done
        '';

      # 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 = "x86_64-darwin";
}