nixos/system/gamescope.nix

{ config, lib, pkgs, user ? "xenia", ... }:
let
  sessionCommand = ''
    gamescope\
      --nested-refresh 60\
      --scaler auto --filter fsr --fsr-sharpness 10\
      --hide-cursor-delay 5 --steam -- steam -gamepadui
  '';
in {
  imports = [ ./desktop.nix ];
  services = {
    blueman.enable = true;
    greetd = {
      enable = true;
      settings = {
        default_session = {
          inherit user;
          command = sessionCommand;
        };
        initial_session = {
          inherit user;
          command = sessionCommand;
        };
      };
    };
  };
  hardware = {
    opengl.driSupport32Bit = true;
    steam-hardware.enable = true;
  };
  programs = {
    xwayland.enable = true;
    gamescope = {
      enable = true;
      capSysNice = true;
    };
    steam = {
      enable = true;
      remotePlay.openFirewall = true;
      gamescopeSession.enable = true;
    };
  };
}