nixos/modules/programs/steam/default.nix

{ config, lib, ... }:
let
  cfg = config.programs.az-steam;
in
{
  options = {
    programs.az-steam.enable = lib.mkEnableOption "Enable Steam";
  };

  config = lib.mkIf cfg.enable {
    programs.steam.enable = true;
    hardware.steam-hardware.enable = true;
    networking.firewall = {
      allowedTCPPorts = [ 27036 ];
      allowedUDPPorts = [ 27031 ];
    };
    home-manager.users.${config.az-username} = {
      home.file.".local/share/applications/steam.desktop".source = ./steam.desktop;
    };
  };
}