refactor(flake): inline assembly wiring

flake/guest.nix

@@ -1,9 +1,10 @@
 {
   inputs,
   lib,
+  root,
   specialArgs,
   repositoryModules,
-  registryAssembly,
+  registry,
   util,
 }:
 let
@@ -65,7 +66,7 @@ let
           enable = lib.mkEnableOption "a reverse-proxy route for this guest";
 
           route = lib.mkOption {
-            type = registryAssembly.definitions.route.type;
+            type = registry.types.route;
             description = "Route registry entry published for this guest.";
           };
         };
@@ -247,7 +248,7 @@ let
               inputs.stylix.nixosModules.stylix
 
               repositoryModules
-              registryAssembly.module
+              registry.module
               cfg.interior
 
               {
@@ -268,15 +269,11 @@ let
       };
     };
 in
+let
+  files = util.collectNixFiles root;
+  guestFiles = lib.filterAttrs (file: type: type == "regular" && lib.hasSuffix ".nix" file) (builtins.readDir root);
+  names = map (file: lib.removeSuffix ".nix" file) (lib.attrNames guestFiles);
+in
 {
-  mkGuests =
-    { root }:
-    let
-      files = util.collectNixFiles root;
-      guestFiles = lib.filterAttrs (file: type: type == "regular" && lib.hasSuffix ".nix" file) (builtins.readDir root);
-      names = map (file: lib.removeSuffix ".nix" file) (lib.attrNames guestFiles);
-    in
-    {
-      imports = files ++ map mkGuest names;
-    };
+  imports = files ++ map mkGuest names;
 }