diff --git a/pkgs/development/python-modules/generic/default.nix b/pkgs/development/python-modules/generic/default.nix
index fe62428c0b0..902dd50fbbf 100644
--- a/pkgs/development/python-modules/generic/default.nix
+++ b/pkgs/development/python-modules/generic/default.nix
@@ -65,6 +65,8 @@ python.stdenv.mkDerivation (builtins.removeAttrs attrs ["disabled" "doCheck"] //
   # propagate python/setuptools to active setup-hook in nix-shell
   propagatedBuildInputs = propagatedBuildInputs ++ [ python setuptools ];
 
+  pythonPath = pythonPath;
+
   configurePhase = attrs.configurePhase or ''
     runHook preConfigure