[issue43948] sysconfig’s osx_framework_user puts headers in different locations from distutils

[Tzu-ping Chung]

New submission from Tzu-ping Chung <uranusjr at gmail.com>:

When built in framework mode on macOS, distutils puts user-site headers under `{userbase}/include/python{py_version_short}{abiflags}`:

>>> import sys
>>> print(sys.platform, sys._framework)
darwin Python
>>> from distutils.dist import Distribution
>>> c = Distribution().get_command_obj('install')
>>> c.user = True
>>> c.finalize_options()
>>> print(c.install_headers)
/Users/uranusjr/Library/Python/3.9/include/python3.9/UNKNOWN

But sysconfig lacks the `pythonX.Y` part:

>>> import sysconfig
>>> print(sysconfig.get_path('include', scheme='osx_framework_user'))
/Users/uranusjr/Library/Python/3.9/include

This is inconsistent to all other schemes, such as `posix_user` (tested on the `python:3.9-slim` OCI image):

>>> import sys
>>> print(sys.platform, sys._framework)
linux
>>> from distutils.dist import Distribution
>>> c = Distribution().get_command_obj('install')
>>> c.user = True
>>> c.finalize_options()
>>> print(c.install_headers)
/root/.local/include/python3.9/UNKNOWN
>>> import sysconfig
>>> print(sysconfig.get_path('include', scheme='posix_user'))
/root/.local/include/python3.9

Note that the paths on `posix_user` only differs by one component (`UNKNOWN`, which is the distribution name), but `osx_framework_user` differs by two.

----------
components: Library (Lib)
messages: 392037
nosy: uranusjr
priority: normal
severity: normal
status: open
title: sysconfig’s osx_framework_user puts headers in different locations from distutils
versions: Python 3.10, Python 3.11, Python 3.6, Python 3.7, Python 3.8, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43948>
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