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Editing: locations.py
"""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 from __future__ import absolute_import import os import os.path import platform import site import sys import sysconfig from distutils import sysconfig as distutils_sysconfig from distutils.command.install import SCHEME_KEYS # type: ignore from distutils.command.install import install as distutils_install_command from pip._internal.models.scheme import Scheme from pip._internal.utils import appdirs from pip._internal.utils.compat import WINDOWS from pip._internal.utils.typing import MYPY_CHECK_RUNNING, cast from pip._internal.utils.virtualenv import running_under_virtualenv if MYPY_CHECK_RUNNING: from distutils.cmd import Command as DistutilsCommand from typing import Dict, List, Optional, Union # Application Directories USER_CACHE_DIR = appdirs.user_cache_dir("pip") def get_major_minor_version(): # type: () -> str """ Return the major-minor version of the current Python as a string, e.g. "3.7" or "3.10". """ return '{}.{}'.format(*sys.version_info) def get_src_prefix(): # type: () -> str if running_under_virtualenv(): src_prefix = os.path.join(sys.prefix, 'src') else: # FIXME: keep src in cwd for now (it is not a temporary folder) try: src_prefix = os.path.join(os.getcwd(), 'src') except OSError: # In case the current working directory has been renamed or deleted sys.exit( "The folder you are executing pip from can no longer be found." ) # under macOS + virtualenv sys.prefix is not properly resolved # it is something like /path/to/python/bin/.. return os.path.abspath(src_prefix) # FIXME doesn't account for venv linked to global site-packages # The python2.7 part of this is Debian specific: # https://github.com/pypa/pip/issues/5193 # https://bitbucket.org/pypy/pypy/issues/2506/sysconfig-returns-incorrect-paths can_not_depend_on_purelib = ( sys.version_info[:2] == (2, 7) or platform.python_implementation().lower() == "pypy" ) site_packages = None # type: Optional[str] if can_not_depend_on_purelib: site_packages = distutils_sysconfig.get_python_lib() else: site_packages = sysconfig.get_path("purelib") try: # Use getusersitepackages if this is present, as it ensures that the # value is initialised properly. user_site = site.getusersitepackages() except AttributeError: user_site = site.USER_SITE if WINDOWS: bin_py = os.path.join(sys.prefix, 'Scripts') bin_user = os.path.join(user_site, 'Scripts') # buildout uses 'bin' on Windows too? if not os.path.exists(bin_py): bin_py = os.path.join(sys.prefix, 'bin') bin_user = os.path.join(user_site, 'bin') else: bin_py = os.path.join(sys.prefix, 'bin') bin_user = os.path.join(user_site, 'bin') # 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/': bin_py = '/usr/local/bin' 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), "user={} prefix={}".format(user, prefix) assert not (home and prefix), "home={} prefix={}".format(home, 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', 'python{}'.format(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"], )
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