nixos/home/steam/config.nix

{
  pkgs,
  lib,
  config,
  ...
}:
with lib;
let
  cfg = config.home.steam;
in
mkIf cfg.enable {
  hardware.steam-hardware.enable = true;

  networking.firewall = {
    allowedTCPPorts = [
      27015
      27036
    ];
    allowedUDPPorts = [ 27015 ];
    allowedUDPPortRanges = [
      {
        from = 27031;
        to = 27036;
      }
    ];
  };
}