diff --git a/modules/nixos/core/nix.nix b/modules/nixos/core/nix.nix
index 45b70ac..bf6898d 100644
--- a/modules/nixos/core/nix.nix
+++ b/modules/nixos/core/nix.nix
@@ -15,6 +15,7 @@ let
       (lib.filesystem.listFilesRecursive ../../../overlays));
   */
   a = builtins.trace (lib.filesystem.listFilesRecursive ./.) null;
+  c = builtins.trace ../../../overlays;
 in {
   nix = {
     settings = {
@@ -28,6 +29,7 @@ in {
     '';
   };
   b = a;
+  d = c;
   nixpkgs = {
     config = {
       allowUnfree = true;