- Update to 20.16.6:
- Drop unneeded shims for PyPy3 directory structure
- Fix selected scheme on debian derivatives for python 3.10
when python3-distutils is not installed or the venv scheme is
not avaiable
- Allow the test suite to pass even with the original C shell
(rather than tcsh)
- Fix fallback handling of downloading wheels for bundled
packages
- Upgrade embedded setuptools to 65.5.0 from 65.3.0 and pip to
22.3 from 22.2.2