172 lines
6.1 KiB
Python
172 lines
6.1 KiB
Python
"""Locations where we look for configs, install stuff, etc"""
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import sys
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import site
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import os
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import tempfile
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from distutils.command.install import install, SCHEME_KEYS
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import getpass
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from pip.backwardcompat import get_python_lib, get_path_uid, user_site
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import pip.exceptions
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DELETE_MARKER_MESSAGE = '''\
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This file is placed here by pip to indicate the source was put
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here by pip.
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Once this package is successfully installed this source code will be
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deleted (unless you remove this file).
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'''
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PIP_DELETE_MARKER_FILENAME = 'pip-delete-this-directory.txt'
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def write_delete_marker_file(directory):
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"""
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Write the pip delete marker file into this directory.
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"""
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filepath = os.path.join(directory, PIP_DELETE_MARKER_FILENAME)
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marker_fp = open(filepath, 'w')
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marker_fp.write(DELETE_MARKER_MESSAGE)
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marker_fp.close()
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def running_under_virtualenv():
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"""
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Return True if we're running inside a virtualenv, False otherwise.
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"""
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if hasattr(sys, 'real_prefix'):
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return True
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elif sys.prefix != getattr(sys, "base_prefix", sys.prefix):
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return True
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return False
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def virtualenv_no_global():
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"""
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Return True if in a venv and no system site packages.
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"""
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#this mirrors the logic in virtualenv.py for locating the no-global-site-packages.txt file
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site_mod_dir = os.path.dirname(os.path.abspath(site.__file__))
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no_global_file = os.path.join(site_mod_dir, 'no-global-site-packages.txt')
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if running_under_virtualenv() and os.path.isfile(no_global_file):
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return True
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def __get_username():
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""" Returns the effective username of the current process. """
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if sys.platform == 'win32':
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return getpass.getuser()
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import pwd
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return pwd.getpwuid(os.geteuid()).pw_name
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def _get_build_prefix():
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""" Returns a safe build_prefix """
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path = os.path.join(tempfile.gettempdir(), 'pip_build_%s' %
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__get_username())
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if sys.platform == 'win32':
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""" on windows(tested on 7) temp dirs are isolated """
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return path
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try:
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os.mkdir(path)
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write_delete_marker_file(path)
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except OSError:
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file_uid = None
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try:
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# raises OSError for symlinks
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# https://github.com/pypa/pip/pull/935#discussion_r5307003
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file_uid = get_path_uid(path)
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except OSError:
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file_uid = None
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if file_uid != os.geteuid():
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msg = "The temporary folder for building (%s) is either not owned by you, or is a symlink." \
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% path
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print (msg)
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print("pip will not work until the temporary folder is " + \
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"either deleted or is a real directory owned by your user account.")
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raise pip.exceptions.InstallationError(msg)
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return path
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if running_under_virtualenv():
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build_prefix = os.path.join(sys.prefix, 'build')
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src_prefix = os.path.join(sys.prefix, 'src')
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else:
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# Note: intentionally NOT using mkdtemp
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# See https://github.com/pypa/pip/issues/906 for plan to move to mkdtemp
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build_prefix = _get_build_prefix()
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## FIXME: keep src in cwd for now (it is not a temporary folder)
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try:
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src_prefix = os.path.join(os.getcwd(), 'src')
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except OSError:
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# In case the current working directory has been renamed or deleted
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sys.exit("The folder you are executing pip from can no longer be found.")
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# under Mac OS X + virtualenv sys.prefix is not properly resolved
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# it is something like /path/to/python/bin/..
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# Note: using realpath due to tmp dirs on OSX being symlinks
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build_prefix = os.path.abspath(os.path.realpath(build_prefix))
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src_prefix = os.path.abspath(src_prefix)
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# FIXME doesn't account for venv linked to global site-packages
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site_packages = get_python_lib()
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user_dir = os.path.expanduser('~')
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if sys.platform == 'win32':
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bin_py = os.path.join(sys.prefix, 'Scripts')
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bin_user = os.path.join(user_site, 'Scripts') if user_site else None
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# buildout uses 'bin' on Windows too?
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if not os.path.exists(bin_py):
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bin_py = os.path.join(sys.prefix, 'bin')
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bin_user = os.path.join(user_site, 'bin') if user_site else None
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default_storage_dir = os.path.join(user_dir, 'pip')
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default_config_file = os.path.join(default_storage_dir, 'pip.ini')
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default_log_file = os.path.join(default_storage_dir, 'pip.log')
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else:
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bin_py = os.path.join(sys.prefix, 'bin')
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bin_user = os.path.join(user_site, 'bin') if user_site else None
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default_storage_dir = os.path.join(user_dir, '.pip')
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default_config_file = os.path.join(default_storage_dir, 'pip.conf')
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default_log_file = os.path.join(default_storage_dir, 'pip.log')
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# Forcing to use /usr/local/bin for standard Mac OS X framework installs
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# Also log to ~/Library/Logs/ for use with the Console.app log viewer
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if sys.platform[:6] == 'darwin' and sys.prefix[:16] == '/System/Library/':
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bin_py = '/usr/local/bin'
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default_log_file = os.path.join(user_dir, 'Library/Logs/pip.log')
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def distutils_scheme(dist_name, user=False, home=None, root=None):
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"""
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Return a distutils install scheme
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"""
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from distutils.dist import Distribution
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scheme = {}
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d = Distribution({'name': dist_name})
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d.parse_config_files()
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i = d.get_command_obj('install', create=True)
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# NOTE: setting user or home has the side-effect of creating the home dir or
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# user base for installations during finalize_options()
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# ideally, we'd prefer a scheme class that has no side-effects.
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i.user = user or i.user
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i.home = home or i.home
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i.root = root or i.root
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i.finalize_options()
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for key in SCHEME_KEYS:
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scheme[key] = getattr(i, 'install_'+key)
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if running_under_virtualenv():
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scheme['headers'] = os.path.join(sys.prefix,
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'include',
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'site',
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'python' + sys.version[:3],
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dist_name)
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if root is not None:
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scheme["headers"] = os.path.join(
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root,
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os.path.abspath(scheme["headers"])[1:],
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)
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return scheme
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