def test_custom_venv_install_scheme_is_prefered(mocker):
# The paths in this test are Fedora paths, but we set them for nt as well, so the test also works on Windows,
# despite the actual values are nonsense there.
# Values were simplified to be compatible with all the supported Python versions.
default_scheme = {
"stdlib": "{base}/lib/python{py_version_short}",
"platstdlib": "{platbase}/lib/python{py_version_short}",
"purelib": "{base}/local/lib/python{py_version_short}/site-packages",
"platlib": "{platbase}/local/lib/python{py_version_short}/site-packages",
"include": "{base}/include/python{py_version_short}",
"platinclude": "{platbase}/include/python{py_version_short}",
"scripts": "{base}/local/bin",
"data": "{base}/local",
}
venv_scheme = {key: path.replace("local", "") for key, path in default_scheme.items()}
sysconfig_install_schemes = {
"posix_prefix": default_scheme,
"nt": default_scheme,
"pypy": default_scheme,
"pypy_nt": default_scheme,
"venv": venv_scheme,
}
if getattr(sysconfig, "get_preferred_scheme", None):
sysconfig_install_schemes[sysconfig.get_preferred_scheme("prefix")] = default_scheme
if sys.version_info[0] == 2:
sysconfig_install_schemes = _stringify_schemes_dict(sysconfig_install_schemes)
# On Python < 3.10, the distutils schemes are not derived from sysconfig schemes
# So we mock them as well to assert the custom "venv" install scheme has priority
distutils_scheme = {
"purelib": "$base/local/lib/python$py_version_short/site-packages",
"platlib": "$platbase/local/lib/python$py_version_short/site-packages",
"headers": "$base/include/python$py_version_short/$dist_name",
"scripts": "$base/local/bin",
"data": "$base/local",
}
distutils_schemes = {
"unix_prefix": distutils_scheme,
"nt": distutils_scheme,
}
if sys.version_info[0] == 2:
distutils_schemes = _stringify_schemes_dict(distutils_schemes)
# We need to mock distutils first, so they don't see the mocked sysconfig,
# if imported for the first time.
# That can happen if the actual interpreter has the "venv" INSTALL_SCHEME
# and hence this is the first time we are touching distutils in this process.
# If distutils saw our mocked sysconfig INSTALL_SCHEMES, we would need
# to define all install schemes.
mocker.patch("distutils.command.install.INSTALL_SCHEMES", distutils_schemes)
mocker.patch("sysconfig._INSTALL_SCHEMES", sysconfig_install_schemes)
pyinfo = PythonInfo()
pyver = f"{pyinfo.version_info.major}.{pyinfo.version_info.minor}"
assert pyinfo.install_path("scripts") == "bin"
assert pyinfo.install_path("purelib").replace(os.sep, "/") == f"lib/python{pyver}/site-packages"
import logging
import os
import random
import sys
from collections import OrderedDict
from pathlib import Path
from shlex import quote
from string import ascii_lowercase, ascii_uppercase, digits
from subprocess import Popen
from virtualenv.app_data import AppDataDisabled
from virtualenv.discovery.py_info import PythonInfo
from virtualenv.util.subprocess import subprocess
_CACHE = OrderedDict()
_CACHE[Path(sys.executable)] = PythonInfo()
def from_exe(cls,
app_data,
exe,
env=None,
raise_on_error=True,
ignore_cache=False):
env = os.environ if env is None else env
result = _get_from_cache(cls,
app_data,
exe,
env,
ignore_cache=ignore_cache)
if isinstance(result, Exception):
def test_py_info_setuptools():
from setuptools.dist import Distribution
assert Distribution
PythonInfo()
