python-blist fails to build with Python 3.9.0a2.

Traceback (most recent call last):
  File "/builddir/build/BUILD/blist-1.3.6/setup.py", line 24, in <module>
    setup(name='blist',
  File "/usr/lib/python3.9/site-packages/setuptools/__init__.py", line 145, in setup
    return distutils.core.setup(**attrs)
  File "/usr/lib64/python3.9/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/usr/lib64/python3.9/distutils/dist.py", line 966, in run_commands
    self.run_command(cmd)
  File "/usr/lib64/python3.9/distutils/dist.py", line 985, in run_command
    cmd_obj.run()
  File "/usr/lib/python3.9/site-packages/setuptools/command/test.py", line 237, in run
    self.run_tests()
  File "/usr/lib/python3.9/site-packages/setuptools/command/test.py", line 255, in run_tests
    test = unittest.main(
  File "/usr/lib64/python3.9/unittest/main.py", line 100, in __init__
    self.parseArgs(argv)
  File "/usr/lib64/python3.9/unittest/main.py", line 147, in parseArgs
    self.createTests()
  File "/usr/lib64/python3.9/unittest/main.py", line 158, in createTests
    self.test = self.testLoader.loadTestsFromNames(self.testNames,
  File "/usr/lib64/python3.9/unittest/loader.py", line 220, in loadTestsFromNames
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "/usr/lib64/python3.9/unittest/loader.py", line 220, in <listcomp>
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "/usr/lib64/python3.9/unittest/loader.py", line 154, in loadTestsFromName
    module = __import__(module_name)
  File "/builddir/build/BUILD/blist-1.3.6/test_blist.py", line 43, in <module>
    from blist.test import test_support, list_tests, sortedlist_tests, btuple_tests
  File "/builddir/build/BUILD/blist-1.3.6/blist/test/sortedlist_tests.py", line 593, in <module>
    class SortedListTest(StrongSortedBase, SortedListMixin):
  File "/builddir/build/BUILD/blist-1.3.6/blist/test/sortedlist_tests.py", line 594, in SortedListTest
    type2test = blist.sortedlist
AttributeError: module 'blist' has no attribute 'sortedlist'

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.9/fedora-rawhide-x86_64/01160978-python-blist/

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

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.