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# -----------------------------------------------------------------------------
# Copyright (c) 2005-2023, PyInstaller Development Team.
#
# Distributed under the terms of the GNU General Public License (version 2
# or later) with exception for distributing the bootloader.
#
# The full license is in the file COPYING.txt, distributed with this software.
#
# SPDX-License-Identifier: (GPL-2.0-or-later WITH Bootloader-exception)
# -----------------------------------------------------------------------------
"""
`distutils`-specific pre-find module path hook.
When run from within a virtual environment, this hook changes the `__path__` of the `distutils` package to
that of the system-wide rather than virtual-environment-specific `distutils` package. While the former is suitable for
freezing, the latter is intended for use _only_ from within virtual environments.
NOTE: this behavior seems to be specific to virtual environments created by (an old?) version of `virtualenv`; it is not
applicable to virtual environments created by the `venv`.
"""
import pathlib
from PyInstaller.utils.hooks import logger, get_module_file_attribute
def pre_find_module_path(api):
# Absolute path of the system-wide "distutils" package when run from within a venv or None otherwise.
# opcode is not a virtualenv module, so we can use it to find the stdlib. Technique taken from virtualenv's
# "distutils" package detection at
# https://github.com/pypa/virtualenv/blob/16.3.0/virtualenv_embedded/distutils-init.py#L5
# As opcode is a module, stdlib path corresponds to the parent directory of its ``__file__`` attribute.
stdlib_path = pathlib.Path(get_module_file_attribute('opcode')).parent.resolve()
# As distutils is a package, we need to consider the grandparent directory of its ``__file__`` attribute.
distutils_path = pathlib.Path(get_module_file_attribute('distutils')).parent.parent.resolve()
if distutils_path.name == 'setuptools':
logger.debug("distutils: provided by setuptools")
elif distutils_path == stdlib_path:
logger.debug("distutils: provided by stdlib")
else:
# Find this package in stdlib.
stdlib_path = str(stdlib_path)
logger.debug("distutils: virtualenv shim - retargeting to stdlib dir %r", stdlib_path)
api.search_dirs = [stdlib_path]
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