git.reasoningtechnology.com Git - SubU/blob

   1 """
   2 Backward compatibility for homebrew builds on macOS.
   3 """
   4
   5
   6 import sys
   7 import os
   8 import functools
   9 import subprocess
  10 import sysconfig
  11
  12
  13 @functools.lru_cache()
  14 def enabled():
  15     """
  16     Only enabled for Python 3.9 framework homebrew builds
  17     except ensurepip and venv.
  18     """
  19     PY39 = (3, 9) < sys.version_info < (3, 10)
  20     framework = sys.platform == 'darwin' and sys._framework
  21     homebrew = "Cellar" in sysconfig.get_config_var('projectbase')
  22     venv = sys.prefix != sys.base_prefix
  23     ensurepip = os.environ.get("ENSUREPIP_OPTIONS")
  24     return PY39 and framework and homebrew and not venv and not ensurepip
  25
  26
  27 schemes = dict(
  28     osx_framework_library=dict(
  29         stdlib='{installed_base}/{platlibdir}/python{py_version_short}',
  30         platstdlib='{platbase}/{platlibdir}/python{py_version_short}',
  31         purelib='{homebrew_prefix}/lib/python{py_version_short}/site-packages',
  32         platlib='{homebrew_prefix}/{platlibdir}/python{py_version_short}/site-packages',
  33         include='{installed_base}/include/python{py_version_short}{abiflags}',
  34         platinclude='{installed_platbase}/include/python{py_version_short}{abiflags}',
  35         scripts='{homebrew_prefix}/bin',
  36         data='{homebrew_prefix}',
  37     )
  38 )
  39
  40
  41 @functools.lru_cache()
  42 def vars():
  43     if not enabled():
  44         return {}
  45     homebrew_prefix = subprocess.check_output(['brew', '--prefix'], text=True).strip()
  46     return locals()
  47
  48
  49 def scheme(name):
  50     """
  51     Override the selected scheme for posix_prefix.
  52     """
  53     if not enabled() or not name.endswith('_prefix'):
  54         return name
  55     return 'osx_framework_library'