python-pykalman fails to build with Python 3.8.0b2. Could not import extension sphinx.ext.pngmath (exception: No module named 'sphinx.ext.pngmath') This is not related to Python 3.8, but blocks the Python 3.8 rebuild. For the build logs, see: https://copr-be.cloud.fedoraproject.org/results/@python/python3.8/fedora-rawhide-x86_64/00965029-python-pykalman/ For all our attempts to build python-pykalman with Python 3.8, see: https://copr.fedorainfracloud.org/coprs/g/python/python3.8/package/python-pykalman/ Testing and mass rebuild of packages is happening in copr. You can follow these instructions to test locally in mock if your package builds with Python 3.8: https://copr.fedorainfracloud.org/coprs/g/python/python3.8/ Let us know here if you have any questions.
So this is a simple enough error to fix. pngmath is now imgmath. However, pykalman has not seen a commit in the last few years and seems abandoned so I may drop the package altogether. I've asked the maintainer here if they can look to pass on their responsibilities. If not, I'll orphan this: https://github.com/pykalman/pykalman/issues/86
Fixed in rawhide.