Description of problem:
Package python-metakernel fails to build from source in Fedora rawhide.

Version-Release number of selected component (if applicable):
0.27.5-1.fc34

Steps to Reproduce:
koji build --scratch f34 python-metakernel-0.27.5-1.fc34.src.rpm

Additional info:
This package is tracked by Koschei. See:
https://koschei.fedoraproject.org/package/python-metakernel

=================================== FAILURES ===================================
_________________________ REPLWrapTestCase.test_python _________________________
self = <metakernel.tests.test_replwrap.REPLWrapTestCase testMethod=test_python>
    def test_python(self):
        if platform.python_implementation() == 'PyPy':
            raise unittest.SkipTest("This test fails on PyPy because of REPL differences")
    
        p = replwrap.python(sys.executable)
        res = p.run_command('4+7')
>       assert res.strip() == '11'
E       AssertionError: assert '\x1b[?2004l\...\n\x1b[?2004h' == '11'
E         - 11
E         + [?2004l
E         + 11
E         + [?2004h
/builddir/build/BUILD/metakernel-0.27.5/metakernel/tests/test_replwrap.py:81: AssertionError
=============================== warnings summary ===============================
/usr/lib/python3.9/site-packages/ipykernel/iostream.py:14
  /usr/lib/python3.9/site-packages/ipykernel/iostream.py:14: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
    from imp import lock_held as import_lock_held
-- Docs: https://docs.pytest.org/en/stable/warnings.html
=========================== short test summary info ============================
FAILED metakernel/tests/test_replwrap.py::REPLWrapTestCase::test_python - Ass...
============= 1 failed, 77 passed, 3 skipped, 1 warning in 45.29s ==============