96 lines
3.6 KiB
Python
96 lines
3.6 KiB
Python
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#-----------------------------------------------------------------------------
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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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#-- Start bootstrap process
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# Only python built-in modules can be used.
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import sys
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import pyimod02_importers
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# Extend Python import machinery by adding PEP302 importers to sys.meta_path.
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pyimod02_importers.install()
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#-- Bootstrap process is complete.
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# We can use other python modules (e.g. os)
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import os # noqa: E402
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# Let other python modules know that the code is running in frozen mode.
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if not hasattr(sys, 'frozen'):
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sys.frozen = True
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# sys._MEIPASS is now set in the bootloader. Hooray.
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# Python 3 C-API function Py_SetPath() resets sys.prefix to empty string. Python 2 was using PYTHONHOME for sys.prefix.
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# Let's do the same for Python 3.
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sys.prefix = sys._MEIPASS
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sys.exec_prefix = sys.prefix
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# Python 3.3+ defines also sys.base_prefix. Let's set them too.
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sys.base_prefix = sys.prefix
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sys.base_exec_prefix = sys.exec_prefix
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# Some packages behave differently when running inside virtual environment. E.g., IPython tries to append path
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# VIRTUAL_ENV to sys.path. For the frozen app we want to prevent this behavior.
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VIRTENV = 'VIRTUAL_ENV'
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if VIRTENV in os.environ:
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# On some platforms (e.g., AIX) 'os.unsetenv()' is unavailable and deleting the var from os.environ does not
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# delete it from the environment.
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os.environ[VIRTENV] = ''
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del os.environ[VIRTENV]
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# Ensure sys.path contains absolute paths. Otherwise, import of other python modules will fail when current working
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# directory is changed by the frozen application.
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python_path = []
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for pth in sys.path:
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python_path.append(os.path.abspath(pth))
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sys.path = python_path
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# At least on Windows, Python seems to hook up the codecs on this import, so it is not enough to just package up all
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# the encodings.
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#
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# It was also reported that without 'encodings' module, the frozen executable fails to load in some configurations:
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# http://www.pyinstaller.org/ticket/651
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#
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# Importing 'encodings' module in a run-time hook is not enough, since some run-time hooks require this module, and the
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# order of running the code from the run-time hooks is not defined.
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try:
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import encodings # noqa: F401
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except ImportError:
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pass
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# In the Python interpreter 'warnings' module is imported when 'sys.warnoptions' is not empty. Mimic this behavior.
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if sys.warnoptions:
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import warnings # noqa: F401
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# Install the hooks for ctypes
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import pyimod03_ctypes # noqa: E402
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pyimod03_ctypes.install()
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# Install the hooks for pywin32 (Windows only)
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if sys.platform.startswith('win'):
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import pyimod04_pywin32
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pyimod04_pywin32.install()
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# Apply a hack for metadata that was collected from (unzipped) python eggs; the EGG-INFO directories are collected into
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# their parent directories (my_package-version.egg/EGG-INFO), and for metadata to be discoverable by
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# `importlib.metadata`, the .egg directory needs to be in `sys.path`. The deprecated `pkg_resources` does not have this
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# limitation, and seems to work as long as the .egg directory's parent directory (in our case `sys._MEIPASS` is in
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# `sys.path`.
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for entry in os.listdir(sys._MEIPASS):
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entry = os.path.join(sys._MEIPASS, entry)
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if not os.path.isdir(entry):
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continue
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if entry.endswith('.egg'):
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sys.path.append(entry)
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