trying to get main config to run

modules/nixos/apps/steam/default.nix

@@ -0,0 +1,21 @@
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.wyrdgard;
+let
+  cfg = config.wyrdgard.apps.steam;
+in
+{
+  options.wyrdgard.apps.steam = with types; {
+    enable = mkBoolOpt false "Whether or not to enable support for Steam.";
+  };
+
+  config = mkIf cfg.enable {
+    programs.steam.enable = true;
+    programs.steam.remotePlay.openFirewall = true;
+
+    environment.systemPackages = with pkgs; [
+      steam
+    ];
+  };
+}