/usr/lib/rads/venv/lib/python3.13/site-packages/pip/_internal/utils
Edit: /usr/lib/rads/venv/lib/python3.13/site-packages/pip/_internal/utils/virtualenv.py (2272B)
from __future__ import annotations
import logging
import os
import re
import sys
logger = logging.getLogger(__name__)
_INCLUDE_SYSTEM_SITE_PACKAGES_REGEX = re.compile(
r"include-system-site-packages\s*=\s*(?P
true|false)"
)
def running_under_virtualenv() -> 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 _get_pyvenv_cfg_lines() -> list[str] | None:
"""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 virtualenv_no_global() -> bool:
"""Returns a boolean, whether running in venv with no system site-packages."""
if running_under_virtualenv():
return _no_global_under_venv()
return False