OpenHome/venv/Lib/site-packages/pip/_internal/locations/_distutils.py
2021-07-21 21:33:05 +02:00

151 lines
5.1 KiB
Python

"""Locations where we look for configs, install stuff, etc"""
# The following comment should be removed at some point in the future.
# mypy: strict-optional=False
import os
import sys
from distutils.cmd import Command as DistutilsCommand
from distutils.command.install import SCHEME_KEYS
from distutils.command.install import install as distutils_install_command
from distutils.sysconfig import get_python_lib
from typing import Dict, List, Optional, Tuple, Union, cast
from pip._internal.models.scheme import Scheme
from pip._internal.utils.compat import WINDOWS
from pip._internal.utils.virtualenv import running_under_virtualenv
from .base import get_major_minor_version
def _distutils_scheme(
dist_name, user=False, home=None, root=None, isolated=False, prefix=None
):
# type:(str, bool, str, str, bool, str) -> Dict[str, str]
"""
Return a distutils install scheme
"""
from distutils.dist import Distribution
dist_args = {"name": dist_name} # type: Dict[str, Union[str, List[str]]]
if isolated:
dist_args["script_args"] = ["--no-user-cfg"]
d = Distribution(dist_args)
d.parse_config_files()
obj = None # type: Optional[DistutilsCommand]
obj = d.get_command_obj("install", create=True)
assert obj is not None
i = cast(distutils_install_command, obj)
# NOTE: setting user or home has the side-effect of creating the home dir
# or user base for installations during finalize_options()
# ideally, we'd prefer a scheme class that has no side-effects.
assert not (user and prefix), f"user={user} prefix={prefix}"
assert not (home and prefix), f"home={home} prefix={prefix}"
i.user = user or i.user
if user or home:
i.prefix = ""
i.prefix = prefix or i.prefix
i.home = home or i.home
i.root = root or i.root
i.finalize_options()
scheme = {}
for key in SCHEME_KEYS:
scheme[key] = getattr(i, "install_" + key)
# install_lib specified in setup.cfg should install *everything*
# into there (i.e. it takes precedence over both purelib and
# platlib). Note, i.install_lib is *always* set after
# finalize_options(); we only want to override here if the user
# has explicitly requested it hence going back to the config
if "install_lib" in d.get_option_dict("install"):
scheme.update(dict(purelib=i.install_lib, platlib=i.install_lib))
if running_under_virtualenv():
scheme["headers"] = os.path.join(
i.prefix,
"include",
"site",
f"python{get_major_minor_version()}",
dist_name,
)
if root is not None:
path_no_drive = os.path.splitdrive(os.path.abspath(scheme["headers"]))[1]
scheme["headers"] = os.path.join(
root,
path_no_drive[1:],
)
return scheme
def get_scheme(
dist_name, # type: str
user=False, # type: bool
home=None, # type: Optional[str]
root=None, # type: Optional[str]
isolated=False, # type: bool
prefix=None, # type: Optional[str]
):
# type: (...) -> Scheme
"""
Get the "scheme" corresponding to the input parameters. The distutils
documentation provides the context for the available schemes:
https://docs.python.org/3/install/index.html#alternate-installation
:param dist_name: the name of the package to retrieve the scheme for, used
in the headers scheme path
:param user: indicates to use the "user" scheme
:param home: indicates to use the "home" scheme and provides the base
directory for the same
:param root: root under which other directories are re-based
:param isolated: equivalent to --no-user-cfg, i.e. do not consider
~/.pydistutils.cfg (posix) or ~/pydistutils.cfg (non-posix) for
scheme paths
:param prefix: indicates to use the "prefix" scheme and provides the
base directory for the same
"""
scheme = _distutils_scheme(dist_name, user, home, root, isolated, prefix)
return Scheme(
platlib=scheme["platlib"],
purelib=scheme["purelib"],
headers=scheme["headers"],
scripts=scheme["scripts"],
data=scheme["data"],
)
def get_bin_prefix():
# type: () -> str
if WINDOWS:
bin_py = os.path.join(sys.prefix, "Scripts")
# buildout uses 'bin' on Windows too?
if not os.path.exists(bin_py):
bin_py = os.path.join(sys.prefix, "bin")
return bin_py
# Forcing to use /usr/local/bin for standard macOS framework installs
# Also log to ~/Library/Logs/ for use with the Console.app log viewer
if sys.platform[:6] == "darwin" and sys.prefix[:16] == "/System/Library/":
return "/usr/local/bin"
return os.path.join(sys.prefix, "bin")
def get_purelib():
# type: () -> str
return get_python_lib(plat_specific=False)
def get_platlib():
# type: () -> str
return get_python_lib(plat_specific=True)
def get_prefixed_libs(prefix):
# type: (str) -> Tuple[str, str]
return (
get_python_lib(plat_specific=False, prefix=prefix),
get_python_lib(plat_specific=True, prefix=prefix),
)