machine_setup/nix/configuration/roles/sm64ex/default.nix

{
  config,
  lib,
  pkgs,
  ...
}:

{
  imports = [ ];

  options.me = {
    sm64ex.enable = lib.mkOption {
      type = lib.types.bool;
      default = false;
      example = true;
      description = "Whether we want to install sm64ex.";
    };
  };

  config = lib.mkIf config.me.sm64ex.enable (
    lib.mkMerge [
      {
        allowedUnfree = [ "sm64ex" ];
      }
      (lib.mkIf config.me.graphical {
        environment.systemPackages = with pkgs; [
          sm64ex
        ];

        # nixpkgs.overlays = [
        #   (final: prev: {
        #     sm4ex = prev.sm64ex.override {
        #       baseRom.name = "SuperMario64.z64";
        #     };
        #   })
        # ];
      })
    ]
  );
}