python313Packages.django-autoslug: fix tests with django_6

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

@@ -3,7 +3,6 @@
   buildPythonPackage,
   fetchFromGitHub,
   setuptools,
-  wheel,
   django,
   django-modeltranslation,
 }:
@@ -20,9 +19,15 @@ buildPythonPackage rec {
     hash = "sha256-IRLY4VaKYXVkSgU/zdY+PSmGrcFB2FlE5L7j0FqisRM=";
   };
 
+  postPatch = lib.optionalString (lib.versionAtLeast django.version "6.0") ''
+    # sadly upstream does not use pytest, so we must patch the one failing test or we could not run any tests at all
+    # see https://github.com/justinmayer/django-autoslug/issues/87
+    substituteInPlace autoslug/tests/tests.py \
+      --replace-fail "assert b.slug == 'hello_world-2'" "assert b.slug == 'hello_world_2'"
+  '';
+
   build-system = [
     setuptools
-    wheel
   ];
 
   dependencies = [ django ];