refactor: don't include the whole modules

Instead only import the nixos/hm/nixvim module.

This _should_ reduce rebuilds.

flake-modules/nixos-modules.nix

@@ -4,9 +4,6 @@
   lib,
   ...
 }:
-let
-  modules = ../modules;
-in
 {
   flake.nixosModules =
     let
@@ -14,7 +11,7 @@ in
         imports = [
           inputs.stylix.nixosModules.stylix
           inputs.home-manager.nixosModules.home-manager
-          (modules + "/nixos")
+          ../modules/nixos
         ] ++ lib.optional (inputs.lix-module != null) inputs.lix-module.nixosModules.default;
         home-manager = {
           useGlobalPkgs = true;
@@ -24,20 +21,9 @@ in
         # Pin nixpkgs
         nix.registry.nixpkgs.flake = inputs.nixpkgs;
       };
-
-      machines = [ "vm" ];
-      mkMachine = hostname: {
-        imports = [
-          nixosModule
-          (import (../machines + "/${hostname}"))
-        ];
-        home-manager.sharedModules = [ { jhome.hostName = hostname; } ];
-      };
-      machineModules = lib.genAttrs machines mkMachine;
     in
     {
       default = nixosModule;
       inherit nixosModule;
-    }
-    // machineModules;
+    };
 }