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import glob import os import subprocess import sys import tempfile from distutils import log from distutils.errors import DistutilsError from functools import partial from . import _reqs from .wheel import Wheel from .warnings import SetuptoolsDeprecationWarning def _fixup_find_links(find_links): """Ensure find-links option end-up being a list of strings.""" if isinstance(find_links, str): return find_links.split() assert isinstance(find_links, (tuple, list)) return find_links def fetch_build_egg(dist, req): """Fetch an egg needed for building. Use pip/wheel to fetch/build a wheel.""" _DeprecatedInstaller.emit() _warn_wheel_not_available(dist) return _fetch_build_egg_no_warn(dist, req) def _fetch_build_eggs(dist, requires): import pkg_resources # Delay import to avoid unnecessary side-effects _DeprecatedInstaller.emit(stacklevel=3) _warn_wheel_not_available(dist) resolved_dists = pkg_resources.working_set.resolve( _reqs.parse(requires, pkg_resources.Requirement), # required for compatibility installer=partial(_fetch_build_egg_no_warn, dist), # avoid warning twice replace_conflicting=True, ) for dist in resolved_dists: pkg_resources.working_set.add(dist, replace=True) return resolved_dists def _fetch_build_egg_no_warn(dist, req): # noqa: C901 # is too complex (16) # FIXME import pkg_resources # Delay import to avoid unnecessary side-effects # Ignore environment markers; if supplied, it is required. req = strip_marker(req) # Take easy_install options into account, but do not override relevant # pip environment variables (like PIP_INDEX_URL or PIP_QUIET); they'll # take precedence. opts = dist.get_option_dict('easy_install') if 'allow_hosts' in opts: raise DistutilsError( 'the `allow-hosts` option is not supported ' 'when using pip to install requirements.' ) quiet = 'PIP_QUIET' not in os.environ and 'PIP_VERBOSE' not in os.environ if 'PIP_INDEX_URL' in os.environ: index_url = None elif 'index_url' in opts: index_url = opts['index_url'][1] else: index_url = None find_links = ( _fixup_find_links(opts['find_links'][1])[:] if 'find_links' in opts else [] ) if dist.dependency_links: find_links.extend(dist.dependency_links) eggs_dir = os.path.realpath(dist.get_egg_cache_dir()) environment = pkg_resources.Environment() for egg_dist in pkg_resources.find_distributions(eggs_dir): if egg_dist in req and environment.can_add(egg_dist): return egg_dist with tempfile.TemporaryDirectory() as tmpdir: cmd = [ sys.executable, '-m', 'pip', '--disable-pip-version-check', 'wheel', '--no-deps', '-w', tmpdir, ] if quiet: cmd.append('--quiet') if index_url is not None: cmd.extend(('--index-url', index_url)) for link in find_links or []: cmd.extend(('--find-links', link)) # If requirement is a PEP 508 direct URL, directly pass # the URL to pip, as `req @ url` does not work on the # command line. cmd.append(req.url or str(req)) try: subprocess.check_call(cmd) except subprocess.CalledProcessError as e: raise DistutilsError(str(e)) from e wheel = Wheel(glob.glob(os.path.join(tmpdir, '*.whl'))[0]) dist_location = os.path.join(eggs_dir, wheel.egg_name()) wheel.install_as_egg(dist_location) dist_metadata = pkg_resources.PathMetadata( dist_location, os.path.join(dist_location, 'EGG-INFO') ) dist = pkg_resources.Distribution.from_filename( dist_location, metadata=dist_metadata ) return dist def strip_marker(req): """ Return a new requirement without the environment marker to avoid calling pip with something like `babel; extra == "i18n"`, which would always be ignored. """ import pkg_resources # Delay import to avoid unnecessary side-effects # create a copy to avoid mutating the input req = pkg_resources.Requirement.parse(str(req)) req.marker = None return req def _warn_wheel_not_available(dist): import pkg_resources # Delay import to avoid unnecessary side-effects try: pkg_resources.get_distribution('wheel') except pkg_resources.DistributionNotFound: dist.announce('WARNING: The wheel package is not available.', log.WARN) class _DeprecatedInstaller(SetuptoolsDeprecationWarning): _SUMMARY = "setuptools.installer and fetch_build_eggs are deprecated." _DETAILS = """ Requirements should be satisfied by a PEP 517 installer. If you are using pip, you can try `pip install --use-pep517`. """ # _DUE_DATE not decided yet