20.16.6

What's Changed

• release 20.16.5 by @gaborbernat in #2413
• fix building python3.10 virtualenvs on debian derivatives by @asottile in #2415
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #2423
• Allow empty string as version for find_compatible_in_house by @schaap in #2430
• Fix test_csh when running with the original csh by @kulikjak in #2418
• Remove outdated PyPy stdlib overrides by @mattip in #2426
• Upgrade pip and setuptools by @gaborbernat in #2434

New Contributors

• @schaap made their first contribution in #2430
• @kulikjak made their first contribution in #2418

Full Changelog: 20.16.5...20.16.6