{
  user ? throw "user argument is required",
  home ? throw "home argument is required",
}:
{ pkgs, ... }:
{
  environment.persistence."/persist" = {
    "${home}/.steam" = { };
    "${home}/.local/share/Steam" = { };
  };

  programs = {
    steam = {
      enable = true;
      localNetworkGameTransfers.openFirewall = true;
      extest.enable = true;
      protontricks.enable = true;
    };

    gamescope = {
      enable = true;
      args = [
        "--rt"
        "-f"
      ];
    };

    gamemode.enable = true;
  };

  home-manager.users.${user} = {
    home = {
      packages = with pkgs; [ protonup ];
      sessionVariables.STEAM_EXTRA_COMPAT_TOOLS_PATHS = "${home}/.steam/root/compatibilitytools.d";
    };
  };
}