{
  config,
  lib,
  pkgs,
  username,
  ...
}:
{
  nixpkgs.config.allowUnfreePredicate =
    pkg:
    builtins.elem (lib.getName pkg) [
      "steam"
      "steam-unwrapped"
      "steam-original"
      "steam-run"
    ];
  environment = {
    sessionVariables.MANGOHUD = 1;
    systemPackages = [ pkgs.mangohud ];
  };
  hardware.steam-hardware.enable = true;
  programs = {
    gamemode.enable = true;
    steam = {
      enable = true;
      remotePlay.openFirewall = true;
      gamescopeSession.enable = true;
    };
    gamescope = {
      enable = true;
      capSysNice = true;
    };
  };
  home-manager.users.${username}.xdg.configFile."MangoHud/MangoHud.conf".text =
    with config.lib.stylix.scheme; ''
      preset=1
      text_color=${base00}
      gpu_color=${green}
      cpu_color=${green}
      vram_color=${magenta}
      ram_color=${magenta}
      engine_color=${red}
      io_color=${magenta}
      frametime_color=${green}
      background_color=${base05}
      media_player_color=${base00}
      wine_color=${red}
      battery_color=${orange}
      network_color=${red}
    '';
}