refactor(flake): inline assembly wiring

flake/host.nix

@@ -1,12 +1,12 @@
 {
   inputs,
   lib,
+  root,
   specialArgs,
   repositoryModules,
 
   guestModules,
-  # TODO refactor registry
-  registryAssembly,
+  registryModule,
 }:
 let
   mkHost =
@@ -26,7 +26,7 @@ let
         guestModules
 
         # TODO: refactor
-        registryAssembly.module (root + "/${name}")
+        registryModule (root + "/${name}")
 
         {
           networking.hostName = name;
@@ -35,15 +35,11 @@ let
       ];
     };
 in
-{
-  mkHosts =
-    { root }:
-    let
-      directories = lib.filterAttrs (_name: type: type == "directory") (builtins.readDir root);
-      names = lib.attrNames directories;
-    in
-    lib.genAttrs names (
-      name:
-      mkHost { inherit root name; }
-    );
-}
+let
+  directories = lib.filterAttrs (_name: type: type == "directory") (builtins.readDir root);
+  names = lib.attrNames directories;
+in
+lib.genAttrs names (
+  name:
+  mkHost { inherit root name; }
+)