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