nixos/system/games.nix

{pkgs, ...}: {
  environment.systemPackages = with pkgs; [
    prismlauncher
    (retroarch.override {
      cores = with libretro; [dolphin mgba mupen64plus];
    })
  ];
  hardware.steam-hardware.enable = true;
  programs = {
    xwayland.enable = true;
    gamescope = {
      enable = true;
      capSysNice = true;
    };
    steam = {
      enable = true;
      remotePlay.openFirewall = true;
    };
  };
}