python-mutatormath fails to build in Fedora rawhide:

Executing(%check): /bin/sh -e /var/tmp/rpm-tmp.bdbLUu
+ umask 022
+ cd /builddir/build/BUILD
+ cd MutatorMath-2.1.2
+ /usr/bin/python3 setup.py test
running test
WARNING: Testing via this command is deprecated and will be removed in a future version. Users looking for a generic test entry point independent of test runner are encouraged to use tox.
WARNING: The pip package is not available, falling back to EasyInstall for handling setup_requires/test_requires; this is deprecated and will be removed in a future version.
Searching for fs<3,>=2.2.0
Reading https://pypi.org/simple/fs/
Download error on https://pypi.org/simple/fs/: [Errno -2] Name or service not known -- Some packages may not be found!
Couldn't find index page for 'fs' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading https://pypi.org/simple/
Download error on https://pypi.org/simple/: [Errno -2] Name or service not known -- Some packages may not be found!
No local packages or working download links found for fs<3,>=2.2.0
error: Could not find suitable distribution for Requirement.parse('fs<3,>=2.2.0')
error: Bad exit status from /var/tmp/rpm-tmp.bdbLUu (%check)
    Bad exit status from /var/tmp/rpm-tmp.bdbLUu (%check)


According to koschei:

https://koschei.fedoraproject.org/package/python-mutatormath?collection=f33

This is the change that caused this:

https://koschei.fedoraproject.org/build/8040980

I have no idea how any of that related to "fs<3,>=2.2.0" yet.


This blocks the test rebuild with Python 3.9.0a4:

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.9/fedora-rawhide-x86_64/01278608-python-mutatormath/

For all our attempts to build python-mutatormath with Python 3.9, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.9/package/python-mutatormath/

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. To make that update smoother, we're building Fedora packages with early pre-releases of Python 3.9.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires), so if this package is required a lot, it's important for us to get it fixed soon.
We'd appreciate help from the people who know this package best, but if you don't want to work on this now, let us know so we can try to work around it on our side.