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audio-transcription-app
/
venv
/lib
/python3.11
/site-packages
/pip
/_internal
/utils
/virtualenv.py
import logging | |
import os | |
import re | |
import site | |
import sys | |
from typing import List, Optional | |
logger = logging.getLogger(__name__) | |
_INCLUDE_SYSTEM_SITE_PACKAGES_REGEX = re.compile( | |
r"include-system-site-packages\s*=\s*(?P<value>true|false)" | |
) | |
def _running_under_venv() -> bool: | |
"""Checks if sys.base_prefix and sys.prefix match. | |
This handles PEP 405 compliant virtual environments. | |
""" | |
return sys.prefix != getattr(sys, "base_prefix", sys.prefix) | |
def _running_under_legacy_virtualenv() -> bool: | |
"""Checks if sys.real_prefix is set. | |
This handles virtual environments created with pypa's virtualenv. | |
""" | |
# pypa/virtualenv case | |
return hasattr(sys, "real_prefix") | |
def running_under_virtualenv() -> bool: | |
"""True if we're running inside a virtual environment, False otherwise.""" | |
return _running_under_venv() or _running_under_legacy_virtualenv() | |
def _get_pyvenv_cfg_lines() -> Optional[List[str]]: | |
"""Reads {sys.prefix}/pyvenv.cfg and returns its contents as list of lines | |
Returns None, if it could not read/access the file. | |
""" | |
pyvenv_cfg_file = os.path.join(sys.prefix, "pyvenv.cfg") | |
try: | |
# Although PEP 405 does not specify, the built-in venv module always | |
# writes with UTF-8. (pypa/pip#8717) | |
with open(pyvenv_cfg_file, encoding="utf-8") as f: | |
return f.read().splitlines() # avoids trailing newlines | |
except OSError: | |
return None | |
def _no_global_under_venv() -> bool: | |
"""Check `{sys.prefix}/pyvenv.cfg` for system site-packages inclusion | |
PEP 405 specifies that when system site-packages are not supposed to be | |
visible from a virtual environment, `pyvenv.cfg` must contain the following | |
line: | |
include-system-site-packages = false | |
Additionally, log a warning if accessing the file fails. | |
""" | |
cfg_lines = _get_pyvenv_cfg_lines() | |
if cfg_lines is None: | |
# We're not in a "sane" venv, so assume there is no system | |
# site-packages access (since that's PEP 405's default state). | |
logger.warning( | |
"Could not access 'pyvenv.cfg' despite a virtual environment " | |
"being active. Assuming global site-packages is not accessible " | |
"in this environment." | |
) | |
return True | |
for line in cfg_lines: | |
match = _INCLUDE_SYSTEM_SITE_PACKAGES_REGEX.match(line) | |
if match is not None and match.group("value") == "false": | |
return True | |
return False | |
def _no_global_under_legacy_virtualenv() -> bool: | |
"""Check if "no-global-site-packages.txt" exists beside site.py | |
This mirrors logic in pypa/virtualenv for determining whether system | |
site-packages are visible in the virtual environment. | |
""" | |
site_mod_dir = os.path.dirname(os.path.abspath(site.__file__)) | |
no_global_site_packages_file = os.path.join( | |
site_mod_dir, | |
"no-global-site-packages.txt", | |
) | |
return os.path.exists(no_global_site_packages_file) | |
def virtualenv_no_global() -> bool: | |
"""Returns a boolean, whether running in venv with no system site-packages.""" | |
# PEP 405 compliance needs to be checked first since virtualenv >=20 would | |
# return True for both checks, but is only able to use the PEP 405 config. | |
if _running_under_venv(): | |
return _no_global_under_venv() | |
if _running_under_legacy_virtualenv(): | |
return _no_global_under_legacy_virtualenv() | |
return False | |