sagemathgh-36802: Python toolchain as wheel packages
    
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We switch several pure Python packages that are part of
`PYTHON_TOOLCHAIN` from normal to wheel packages.

The only time that we carried a patch for any of these packages was in
2014–2016, a patch for pyparsing.

This reduces the complexity of our SPKGs, in line with previous PRs
sagemath#36267, sagemath#36429, sagemath#36129, sagemath#36794.



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URL: sagemath#36802
Reported by: Matthias Köppe
Reviewer(s): Dima Pasechnik