python-flask fails to build with Python 3.9.0a2. Initially the failure was due to removal of access from collections to collections.abc. See https://github.com/python/cpython/commit/ef092fe9905f61ca27889092ca1248a11aa74498 This is fixable in flask/sessions.py with: -from collections import MutableMapping +from collections.abc import MutableMapping However there are some test case failures after that. For the build logs, see: https://copr-be.cloud.fedoraproject.org/results/@python/python3.9/fedora-rawhide-x86_64/01140779-python-flask/ For all our attempts to build python-flask with Python 3.9, see: https://copr.fedorainfracloud.org/coprs/g/python/python3.9/package/python-flask/ 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 3.9: https://copr.fedorainfracloud.org/coprs/g/python/python3.9/ Let us know here if you have any questions. Python 3.9 will be included in Fedora 33, but the initial bootstrapping has already started. A build failure this early in the bootstrap sequence blocks us very much.
Dos this get the job done? https://src.fedoraproject.org/rpms/python-flask/pull-request/6
It does.