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#!/usr/bin/env python
# ignore all lints for this file, since it is run by python2 as well
# type: ignore
# pylint: disable=deprecated-module
import sys
# do not inject mesonbuild.scripts
# python -P would work too, but is exclusive to >=3.11
if sys.path[0].endswith('scripts'):
del sys.path[0]
import json, os, sysconfig
import distutils.command.install
def get_distutils_paths(scheme=None, prefix=None):
import distutils.dist
distribution = distutils.dist.Distribution()
install_cmd = distribution.get_command_obj('install')
if prefix is not None:
install_cmd.prefix = prefix
if scheme:
install_cmd.select_scheme(scheme)
install_cmd.finalize_options()
return {
'data': install_cmd.install_data,
'include': os.path.dirname(install_cmd.install_headers),
'platlib': install_cmd.install_platlib,
'purelib': install_cmd.install_purelib,
'scripts': install_cmd.install_scripts,
}
# On Debian derivatives, the Python interpreter shipped by the distribution uses
# a custom install scheme, deb_system, for the system install, and changes the
# default scheme to a custom one pointing to /usr/local and replacing
# site-packages with dist-packages.
# See https://github.com/mesonbuild/meson/issues/8739.
# XXX: We should be using sysconfig, but Debian only patches distutils.
if 'deb_system' in distutils.command.install.INSTALL_SCHEMES:
paths = get_distutils_paths(scheme='deb_system')
install_paths = get_distutils_paths(scheme='deb_system', prefix='')
else:
paths = sysconfig.get_paths()
empty_vars = {'base': '', 'platbase': '', 'installed_base': ''}
install_paths = sysconfig.get_paths(vars=empty_vars)
def links_against_libpython():
from distutils.core import Distribution, Extension
cmd = Distribution().get_command_obj('build_ext')
cmd.ensure_finalized()
return bool(cmd.get_libraries(Extension('dummy', [])))
variables = sysconfig.get_config_vars()
variables.update({'base_prefix': getattr(sys, 'base_prefix', sys.prefix)})
if sys.version_info < (3, 0):
suffix = variables.get('SO')
elif sys.version_info < (3, 8, 7):
# https://bugs.python.org/issue?@action=redirect&bpo=39825
from distutils.sysconfig import get_config_var
suffix = get_config_var('EXT_SUFFIX')
else:
suffix = variables.get('EXT_SUFFIX')
limited_api_suffix = None
if sys.version_info >= (3, 2):
try:
from importlib.machinery import EXTENSION_SUFFIXES
limited_api_suffix = EXTENSION_SUFFIXES[1]
except Exception:
pass
# pypy supports modules targetting the limited api but
# does not use a special suffix to distinguish them:
# https://doc.pypy.org/en/latest/cpython_differences.html#permitted-abi-tags-in-extensions
if '__pypy__' in sys.builtin_module_names:
limited_api_suffix = suffix
print(json.dumps({
'variables': variables,
'paths': paths,
'sysconfig_paths': sysconfig.get_paths(),
'install_paths': install_paths,
'version': sysconfig.get_python_version(),
'platform': sysconfig.get_platform(),
'is_pypy': '__pypy__' in sys.builtin_module_names,
'is_venv': sys.prefix != variables['base_prefix'],
'link_libpython': links_against_libpython(),
'suffix': suffix,
'limited_api_suffix': limited_api_suffix,
}))
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