{pkgs, ...}: {
  # $ nix-env -qaP | grep wget
  environment.systemPackages =
    [ pkgs.vim
    ];

  # # Auto upgrade nix package and the daemon service.
  # services.nix-daemon.enable = true;
  # # nix.package = pkgs.nix;

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

  # # Create /etc/zshrc that loads the nix-darwin environment.
  # programs.zsh.enable = true;  # default shell on catalina
  # # programs.fish.enable = true;

  # # # 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 = 4;

  # # The platform the configuration will be used on.
}
