steam.nix

{pkgs, ...}: {
  programs = {
    steam = {
      enable = true;
      remotePlay.openFirewall = true;
      dedicatedServer.openFirewall = false;
      gamescopeSession.enable = true;
      extraCompatPackages = [pkgs.proton-ge-bin pkgs.vkd3d-proton];
    };

    gamescope = {
      enable = true;
      capSysNice = true;
      args = [
        "--rt"
        "--expose-wayland"
      ];
    };
  };

  environment.sessionVariables = {
    DISABLE_LAYER_AMD_SWITCHABLE_GRAPHICS_1 = "1";
    ENABLE_VK_LAYER_VALVE_steam_overlay = "0";
    ENABLE_VK_LAYER_VALVE_steam_fossilize = "0";
    __NV_PRIME_RENDER_OFFLOAD = "1";
    __GLX_VENDOR_LIBRARY_NAME = "nvidia";
    __VK_LAYER_NV_optimus = "NVIDIA_only";
    DXVK_FILTER_DEVICE_NAME = "NVIDIA";
    DXVK_LOG_LEVEL = "warn";
    WINEDEBUG = "-all";
  };
}