diff --git a/overlay.nix b/overlay.nix
index 7a26adb..1ea69bf 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -3,8 +3,10 @@ final: prev:
 let
   stackpkgs = final.callPackage ./stackpkgs.nix;
 in
-builtins.removeAttrs stackpkgs [
-  "vscode-extensions"
-] // {
+{
+  stackpkgs = builtins.removeAttrs stackpkgs [
+    "vscode-extensions"
+  ];
+} // {
   vscode-extensions = prev.vscode-extensions // stackpkgs.vscode-extensions;
 }