diff --git a/pkgs/development/python-modules/cgen/default.nix b/pkgs/development/python-modules/cgen/default.nix
index 0821e5fc84ad..453de0280a5b 100644
--- a/pkgs/development/python-modules/cgen/default.nix
+++ b/pkgs/development/python-modules/cgen/default.nix
@@ -9,13 +9,13 @@
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "cgen";
   version = "2025.1";
   pyproject = true;
 
   src = fetchPypi {
-    inherit pname version;
+    inherit (finalAttrs) pname version;
     hash = "sha256-efAeAQ1JwT5YtMqPLUmWprcXiWj18tkGJiczSArnotQ=";
   };
 
@@ -35,4 +35,4 @@ buildPythonPackage rec {
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ sigmanificient ];
   };
-}
+})