Hi,

Thanks for reporting that.

I wonder, how did it work in place first place as "-n" was "auto" e.g.
all availalbe threads.
--8<---------------cut here---------------start------------->8---
diff --git a/gnu/packages/python-web.scm b/gnu/packages/python-web.scm
index c030deeb12..cf3c15857c 100644
--- a/gnu/packages/python-web.scm
+++ b/gnu/packages/python-web.scm
@@ -2026,7 +2026,7 @@ Amazon S3 compatible object storage server.")
     (build-system pyproject-build-system)
     (arguments
      '(#:test-flags
-       (list "-n" "auto"
+       (list "--n" (number->string (parallel-job-count))
--8<---------------cut here---------------end--------------->8---

Reviving the patches.

--
Oleg