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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2025-08-15 18:14
__init__.py	0 B	-rw-r--r--	2024-10-02 19:13
_log.py	1015 B	-rw-r--r--	2024-10-02 19:13
appdirs.py	1.63 KB	-rw-r--r--	2024-10-02 19:13
compat.py	1.84 KB	-rw-r--r--	2024-10-02 19:13
compatibility_tags.py	5.25 KB	-rw-r--r--	2024-10-02 19:13
datetime.py	242 B	-rw-r--r--	2024-10-02 19:13
deprecation.py	3.54 KB	-rw-r--r--	2024-10-02 19:13
direct_url_helpers.py	3.13 KB	-rw-r--r--	2024-10-02 19:13
distutils_args.py	1.22 KB	-rw-r--r--	2024-10-02 19:13
egg_link.py	2.15 KB	-rw-r--r--	2024-10-02 19:13
encoding.py	1.14 KB	-rw-r--r--	2024-10-02 19:13
entrypoints.py	1.1 KB	-rw-r--r--	2024-10-02 19:13
filesystem.py	5.75 KB	-rw-r--r--	2024-10-02 19:13
filetypes.py	716 B	-rw-r--r--	2024-10-02 19:13
glibc.py	3.04 KB	-rw-r--r--	2024-10-02 19:13
hashes.py	4.7 KB	-rw-r--r--	2024-10-02 19:13
inject_securetransport.py	795 B	-rw-r--r--	2024-10-02 19:13
logging.py	11.26 KB	-rw-r--r--	2024-10-02 19:13
misc.py	20.29 KB	-rw-r--r--	2024-10-02 19:13
models.py	1.17 KB	-rw-r--r--	2024-10-02 19:13
packaging.py	2.88 KB	-rw-r--r--	2024-10-02 19:13
parallel.py	3.12 KB	-rw-r--r--	2024-10-02 19:13
pkg_resources.py	987 B	-rw-r--r--	2024-10-02 19:13
setuptools_build.py	4.59 KB	-rw-r--r--	2024-10-02 19:13
subprocess.py	9.82 KB	-rw-r--r--	2024-10-02 19:13
temp_dir.py	7.48 KB	-rw-r--r--	2024-10-02 19:13
unpacking.py	8.94 KB	-rw-r--r--	2024-10-02 19:13
urls.py	1.72 KB	-rw-r--r--	2024-10-02 19:13
virtualenv.py	3.38 KB	-rw-r--r--	2024-10-02 19:13
wheel.py	6.02 KB	-rw-r--r--	2024-10-02 19:13

Rename

# The following comment should be removed at some point in the future.
# mypy: strict-optional=False

import os
import sys
from typing import Optional, Tuple

def glibc_version_string() -> Optional[str]:
    "Returns glibc version string, or None if not using glibc."
    return glibc_version_string_confstr() or glibc_version_string_ctypes()

def glibc_version_string_confstr() -> Optional[str]:
    "Primary implementation of glibc_version_string using os.confstr."
    # os.confstr is quite a bit faster than ctypes.DLL. It's also less likely
    # to be broken or missing. This strategy is used in the standard library
    # platform module:
    # https://github.com/python/cpython/blob/fcf1d003bf4f0100c9d0921ff3d70e1127ca1b71/Lib/platform.py#L175-L183
    if sys.platform == "win32":
        return None
    try:
        # os.confstr("CS_GNU_LIBC_VERSION") returns a string like "glibc 2.17":
        _, version = os.confstr("CS_GNU_LIBC_VERSION").split()
    except (AttributeError, OSError, ValueError):
        # os.confstr() or CS_GNU_LIBC_VERSION not available (or a bad value)...
        return None
    return version

def glibc_version_string_ctypes() -> Optional[str]:
    "Fallback implementation of glibc_version_string using ctypes."

try:
        import ctypes
    except ImportError:
        return None

# ctypes.CDLL(None) internally calls dlopen(NULL), and as the dlopen
    # manpage says, "If filename is NULL, then the returned handle is for the
    # main program". This way we can let the linker do the work to figure out
    # which libc our process is actually using.
    process_namespace = ctypes.CDLL(None)
    try:
        gnu_get_libc_version = process_namespace.gnu_get_libc_version
    except AttributeError:
        # Symbol doesn't exist -> therefore, we are not linked to
        # glibc.
        return None

# Call gnu_get_libc_version, which returns a string like "2.5"
    gnu_get_libc_version.restype = ctypes.c_char_p
    version_str = gnu_get_libc_version()
    # py2 / py3 compatibility:
    if not isinstance(version_str, str):
        version_str = version_str.decode("ascii")

return version_str

# platform.libc_ver regularly returns completely nonsensical glibc
# versions. E.g. on my computer, platform says:
#
#   ~$ python2.7 -c 'import platform; print(platform.libc_ver())'
#   ('glibc', '2.7')
#   ~$ python3.5 -c 'import platform; print(platform.libc_ver())'
#   ('glibc', '2.9')
#
# But the truth is:
#
#   ~$ ldd --version
#   ldd (Debian GLIBC 2.22-11) 2.22
#
# This is unfortunate, because it means that the linehaul data on libc
# versions that was generated by pip 8.1.2 and earlier is useless and
# misleading. Solution: instead of using platform, use our code that actually
# works.
def libc_ver() -> Tuple[str, str]:
    """Try to determine the glibc version

Returns a tuple of strings (lib, version) which default to empty strings
    in case the lookup fails.
    """
    glibc_version = glibc_version_string()
    if glibc_version is None:
        return ("", "")
    else:
        return ("glibc", glibc_version)