{
  lib,
  config,
  pkgs,
  ...
}:
let
  cfg = config.z34.factorio;
in
{
  options.z34.factorio = {
    enable = lib.mkOption {
      type = lib.types.bool;
      default = false;
    };
  };

  config = lib.mkIf cfg.enable {
    nixpkgs.config.allowUnfree = true;
    environment.systemPackages = with pkgs; [
      factorio-space-age
      # zoom
      # zeroad
    ];
    system.extraDependencies = with pkgs; [ factorio-space-age.src ];
  };
}