refactor: cleaned up nixos and home dirs

modules/helpers.nix

@@ -0,0 +1,23 @@
+{
+  directoryImport =
+    let
+      collectDirs =
+        path:
+        let
+          content = builtins.readDir path;
+          subdirs = builtins.filter (name: content.${name} == "directory") (builtins.attrNames content);
+          buildPath = name: path + "/${name}";
+
+          thisDirs = map buildPath subdirs;
+          subDirs = builtins.concatMap collectDirs thisDirs;
+        in
+        [ path ] ++ subDirs;
+    in
+    path:
+    builtins.listToAttrs (
+      map (dir: {
+        name = baseNameOf (toString dir);
+        value = import dir;
+      }) (collectDirs path)
+    );
+}