set default package for wings service

flake.nix

@@ -14,6 +14,9 @@
     ];
   in
   {
+    overlays.default = final: prev: {
+      wings = final.callPackage ./pkgs/wings { };
+    };
     nixosModules = rec {
       wings = ./modules/wings;
       default = wings;

modules/wings/default.nix

@@ -9,7 +9,8 @@ in
     enable = lib.mkEnableOption "Enable Pterodactyl Wings";
     package = lib.mkOption {
       type = lib.types.package;
-      default = null;
+      default = pkgs.wings;
+      defaultText = "pkgs.wings";
       description = "Package to use for Wings daemon";
     };
   };