Explicitly BuildRequire python3-setuptools
    
    See https://fedoraproject.org/wiki/Changes/Reduce_dependencies_on_python3-setuptools
    
    The error without setuptools is:
    
        + /usr/bin/python3 setup.py build '--executable=/usr/bin/python3 -s'
        Traceback (most recent call last):
          File "/builddir/build/BUILD/python-omemo-0.12.0-beta/setup.py", line 1, in <module>
            from setuptools import setup, find_packages
        ModuleNotFoundError: No module named 'setuptools'
        error: Bad exit status from /var/tmp/rpm-tmp.TZcp5Y (%build)