site-packages path to pythonx.y or rustpythonx.y?

[youknowone]

questions

• Which one is better?
• How's other distributions do?
  • If they do special handling, why doesn't it exist under Lib/sysconfig.py?
• Which one fits better to minimize stdlib diff from CPython?

recent changes: #4924

[itsankitkp]

#2. pypy adds site-packages to Lib/pypy3.8
I checked code in pypy3.8-v7.3.11-linux64
Their sysconfig looks like this (for schemes)

    'posix_prefix': {
        'stdlib': '{installed_base}/lib/{implementation_lower}{py_version_short}',
        'platstdlib': '{platbase}/lib/{implementation_lower}{py_version_short}',
        'purelib': '{base}/lib/{implementation_lower}{py_version_short}/site-packages',
        'platlib': '{platbase}/lib/{implementation_lower}{py_version_short}/site-packages',
        'include':
            '{installed_base}/include/{implementation_lower}{py_version_short}{abiflags}',
        'platinclude':
            '{installed_platbase}/include/{implementation_lower}{py_version_short}{abiflags}',
        'scripts': '{base}/bin',
        'data': '{base}',
        }

where implementation is defined as

def _get_implementation():
    if sys.implementation.name == 'pypy':
        return 'PyPy'
    return 'Python'

For #1 I prefer having rustpython as it minimizes any confusion (where my site-packages are) but it does add diffs in #3.

[itsankitkp]

Couldn't check Jython for venv site packages as it doesn't support python3 (yet!) and IronPython needs .NET framework (need to figure out how to emulate this on linux)

[youknowone]

Thank you! Practically graalpython will be the last part, but I think checking pypy was enough.

Maybe filing a patch from pypy to CPython and taking it from RustPython will be a way - if CPython accepts it.

[youknowone]

I am a bit confused. The file looks under 2.7 path, but it is still used in python3, right? Last edit was 4 months ago.

https://foss.heptapod.net/pypy/pypy/-/blob/branch/default/lib-python/2.7/sysconfig.py

[itsankitkp]

Thank you! Practically graalpython will be the last part, but I think checking pypy was enough.

Maybe filing a patch from pypy to CPython and taking it from RustPython will be a way - if CPython accepts it.

Opened an issue in cpython

[itsankitkp]

I am a bit confused. The file looks under 2.7 path, but it is still used in python3, right? Last edit was 4 months ago.

https://foss.heptapod.net/pypy/pypy/-/blob/branch/default/lib-python/2.7/sysconfig.py

I think this is for pypy 2.7, I don't see venv module anywhere in above source tree. Source tarball which I have does have venv module

[youknowone]

CPython issue: python/cpython#103708

[youknowone]

The fix is merged! @itsankitkp Thank you!