python-django-haystack: add missing 'setuptools' to propagatedBuildIn…

…puts

As a side-effect of f7e28bf, the build
no longer propagated 'setuptools', which is a run-time dependency. See
NixOS/nixpkgs#68314 for further details.

Fixes NixOS/nixpkgs#68479.

pkgs/development/python-modules/django-haystack/default.nix

@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi
-, setuptools_scm, django, dateutil, whoosh, pysolr
+, setuptools, setuptools_scm, django, dateutil, whoosh, pysolr
 , coverage, mock, nose, geopy, requests }:
 
 buildPythonPackage rec {
@@ -12,7 +12,7 @@ buildPythonPackage rec {
   };
 
   checkInputs = [ pysolr whoosh dateutil geopy coverage nose mock coverage requests ];
-  propagatedBuildInputs = [ django ];
+  propagatedBuildInputs = [ django setuptools ];
   nativeBuildInputs = [ setuptools_scm ];
 
   postPatch = ''