py-virtualenv: builds failing across-the-board, for python 3.8, 3.9, 3.10

[mascguy (Christopher Nielsen)]

For example:

/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/setuptools/installer.py:27: SetuptoolsDeprecationWarning: setuptools.installer is deprecated. Requirements should be satisfied by a PEP 517 installer.
  warnings.warn(
WARNING: The wheel package is not available.
/opt/local/Library/Frameworks/Python.framework/Versions/3.9/bin/python3.9: No module named pip
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/setuptools/installer.py", line 82, in fetch_build_egg
    subprocess.check_call(cmd)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/subprocess.py", line 373, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/opt/local/Library/Frameworks/Python.framework/Versions/3.9/bin/python3.9', '-m', 'pip', '--disable-pip-version-check', 'wheel', '--no-deps', '-w', '/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_python_py-virtualenv/py39-virtualenv/work/.tmp/tmpwirzmq2k', '--quiet', '--index-url', "''", '--find-links', "''", 'typing-extensions']' returned non-zero exit status 1.

• ​https://ports.macports.org/port/py38-virtualenv/details/
• ​https://ports.macports.org/port/py39-virtualenv/details/
• ​https://ports.macports.org/port/py310-virtualenv/details/

[jmroot (Joshua Root)]

#65437