grimm-nixos-laptop/common/gaming.nix

{ pkgs, config, lib, ... }:
let
  cfg = config.grimmShared;
in
{
  config = with cfg; lib.mkIf (enable && gaming) {
    programs.steam = {
      enable = true;
      gamescopeSession.enable = true;
      gamescopeSession.env = {
        DRI_PRIME = "1";
      };
    };

    programs.gamemode = {
      enable = true;
      settings = {
        general = {
          inhibit_screensaver = 0;
          renice = 10;
        };
        custom = {
          start = "${lib.getExe pkgs.libnotify} 'GameMode started'";
          end = "${lib.getExe pkgs.libnotify} 'GameMode ended'";
        };
      };
    };

    services.udev.packages = [ pkgs.wooting-udev-rules ];

    environment.sessionVariables = {
      GAMEMODERUNEXEC = "env DRI_PRIME=1";
    };

    environment.systemPackages = with pkgs; [
      heroic
      prismlauncher
      mangohud
      wootility
      (pkgs.symlinkJoin {
        name = "osu";
        paths = [
          (pkgs.writeShellScriptBin "osu!" ''exec gamemoderun ${lib.getExe pkgs.osu-lazer-bin}
          '')
          pkgs.osu-lazer-bin
        ];
      })
    ];
  };

  options.grimmShared.gaming = with lib; mkOption {
    type = types.bool;
    default = false;
    description = "enables steam, heroic, prism and gamemoded";
  };
}