Package: ftp.debian.org Severity: normal X-Debbugs-Cc: debian-pyt...@lists.debian.org, fl...@debian.org
This package wasn't updated for the Python 3.9 transition and removed from testing on 2020-12-11. Its FTBFS actually suggests it doesn't work with modern celery, the upstream bug is https://github.com/django-haystack/celery- haystack/issues/64. There are some PRs and a fork (https://pypi.org/project/celery-haystack-ng/) linked there.