config.nix/modules/gaming/steam.nix

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

{
  options = {
    gaming = {
      steam.enable = lib.mkEnableOption "enable steam";
    };
  };

  config = lib.mkIf config.gaming.steam.enable {
    home.packages = with pkgs; [steam];
  };
}