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567 lines
22 KiB
Python
567 lines
22 KiB
Python
from __future__ import absolute_import
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import errno
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import logging
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import operator
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import os
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import shutil
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from optparse import SUPPRESS_HELP
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from pip._vendor import pkg_resources
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from pip._internal.cache import WheelCache
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from pip._internal.cli import cmdoptions
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from pip._internal.cli.base_command import RequirementCommand
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from pip._internal.cli.status_codes import ERROR
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from pip._internal.exceptions import (
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CommandError, InstallationError, PreviousBuildDirError,
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)
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from pip._internal.locations import distutils_scheme, virtualenv_no_global
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from pip._internal.operations.check import check_install_conflicts
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from pip._internal.operations.prepare import RequirementPreparer
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from pip._internal.req import RequirementSet, install_given_reqs
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from pip._internal.req.req_tracker import RequirementTracker
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from pip._internal.resolve import Resolver
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from pip._internal.utils.filesystem import check_path_owner
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from pip._internal.utils.misc import (
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ensure_dir, get_installed_version,
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protect_pip_from_modification_on_windows,
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)
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from pip._internal.utils.temp_dir import TempDirectory
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from pip._internal.wheel import WheelBuilder
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logger = logging.getLogger(__name__)
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class InstallCommand(RequirementCommand):
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"""
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Install packages from:
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- PyPI (and other indexes) using requirement specifiers.
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- VCS project urls.
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- Local project directories.
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- Local or remote source archives.
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pip also supports installing from "requirements files", which provide
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an easy way to specify a whole environment to be installed.
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"""
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name = 'install'
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usage = """
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%prog [options] <requirement specifier> [package-index-options] ...
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%prog [options] -r <requirements file> [package-index-options] ...
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%prog [options] [-e] <vcs project url> ...
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%prog [options] [-e] <local project path> ...
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%prog [options] <archive url/path> ..."""
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summary = 'Install packages.'
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def __init__(self, *args, **kw):
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super(InstallCommand, self).__init__(*args, **kw)
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cmd_opts = self.cmd_opts
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cmd_opts.add_option(cmdoptions.requirements())
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cmd_opts.add_option(cmdoptions.constraints())
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cmd_opts.add_option(cmdoptions.no_deps())
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cmd_opts.add_option(cmdoptions.pre())
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cmd_opts.add_option(cmdoptions.editable())
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cmd_opts.add_option(
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'-t', '--target',
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dest='target_dir',
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metavar='dir',
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default=None,
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help='Install packages into <dir>. '
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'By default this will not replace existing files/folders in '
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'<dir>. Use --upgrade to replace existing packages in <dir> '
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'with new versions.'
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)
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cmd_opts.add_option(cmdoptions.platform())
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cmd_opts.add_option(cmdoptions.python_version())
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cmd_opts.add_option(cmdoptions.implementation())
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cmd_opts.add_option(cmdoptions.abi())
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cmd_opts.add_option(
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'--user',
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dest='use_user_site',
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action='store_true',
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help="Install to the Python user install directory for your "
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"platform. Typically ~/.local/, or %APPDATA%\\Python on "
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"Windows. (See the Python documentation for site.USER_BASE "
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"for full details.)")
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cmd_opts.add_option(
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'--no-user',
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dest='use_user_site',
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action='store_false',
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help=SUPPRESS_HELP)
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cmd_opts.add_option(
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'--root',
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dest='root_path',
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metavar='dir',
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default=None,
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help="Install everything relative to this alternate root "
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"directory.")
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cmd_opts.add_option(
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'--prefix',
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dest='prefix_path',
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metavar='dir',
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default=None,
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help="Installation prefix where lib, bin and other top-level "
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"folders are placed")
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cmd_opts.add_option(cmdoptions.build_dir())
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cmd_opts.add_option(cmdoptions.src())
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cmd_opts.add_option(
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'-U', '--upgrade',
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dest='upgrade',
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action='store_true',
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help='Upgrade all specified packages to the newest available '
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'version. The handling of dependencies depends on the '
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'upgrade-strategy used.'
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)
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cmd_opts.add_option(
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'--upgrade-strategy',
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dest='upgrade_strategy',
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default='only-if-needed',
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choices=['only-if-needed', 'eager'],
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help='Determines how dependency upgrading should be handled '
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'[default: %default]. '
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'"eager" - dependencies are upgraded regardless of '
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'whether the currently installed version satisfies the '
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'requirements of the upgraded package(s). '
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'"only-if-needed" - are upgraded only when they do not '
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'satisfy the requirements of the upgraded package(s).'
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)
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cmd_opts.add_option(
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'--force-reinstall',
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dest='force_reinstall',
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action='store_true',
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help='Reinstall all packages even if they are already '
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'up-to-date.')
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cmd_opts.add_option(
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'-I', '--ignore-installed',
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dest='ignore_installed',
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action='store_true',
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help='Ignore the installed packages (reinstalling instead).')
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cmd_opts.add_option(cmdoptions.ignore_requires_python())
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cmd_opts.add_option(cmdoptions.no_build_isolation())
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cmd_opts.add_option(cmdoptions.use_pep517())
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cmd_opts.add_option(cmdoptions.no_use_pep517())
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cmd_opts.add_option(cmdoptions.install_options())
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cmd_opts.add_option(cmdoptions.global_options())
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cmd_opts.add_option(
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"--compile",
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action="store_true",
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dest="compile",
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default=True,
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help="Compile Python source files to bytecode",
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)
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cmd_opts.add_option(
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"--no-compile",
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action="store_false",
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dest="compile",
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help="Do not compile Python source files to bytecode",
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)
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cmd_opts.add_option(
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"--no-warn-script-location",
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action="store_false",
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dest="warn_script_location",
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default=True,
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help="Do not warn when installing scripts outside PATH",
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)
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cmd_opts.add_option(
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"--no-warn-conflicts",
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action="store_false",
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dest="warn_about_conflicts",
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default=True,
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help="Do not warn about broken dependencies",
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)
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cmd_opts.add_option(cmdoptions.no_binary())
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cmd_opts.add_option(cmdoptions.only_binary())
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cmd_opts.add_option(cmdoptions.prefer_binary())
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cmd_opts.add_option(cmdoptions.no_clean())
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cmd_opts.add_option(cmdoptions.require_hashes())
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cmd_opts.add_option(cmdoptions.progress_bar())
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index_opts = cmdoptions.make_option_group(
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cmdoptions.index_group,
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self.parser,
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)
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self.parser.insert_option_group(0, index_opts)
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self.parser.insert_option_group(0, cmd_opts)
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def run(self, options, args):
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cmdoptions.check_install_build_global(options)
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upgrade_strategy = "to-satisfy-only"
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if options.upgrade:
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upgrade_strategy = options.upgrade_strategy
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if options.build_dir:
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options.build_dir = os.path.abspath(options.build_dir)
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cmdoptions.check_dist_restriction(options, check_target=True)
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if options.python_version:
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python_versions = [options.python_version]
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else:
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python_versions = None
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options.src_dir = os.path.abspath(options.src_dir)
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install_options = options.install_options or []
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if options.use_user_site:
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if options.prefix_path:
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raise CommandError(
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"Can not combine '--user' and '--prefix' as they imply "
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"different installation locations"
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)
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if virtualenv_no_global():
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raise InstallationError(
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"Can not perform a '--user' install. User site-packages "
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"are not visible in this virtualenv."
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)
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install_options.append('--user')
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install_options.append('--prefix=')
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target_temp_dir = TempDirectory(kind="target")
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if options.target_dir:
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options.ignore_installed = True
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options.target_dir = os.path.abspath(options.target_dir)
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if (os.path.exists(options.target_dir) and not
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os.path.isdir(options.target_dir)):
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raise CommandError(
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"Target path exists but is not a directory, will not "
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"continue."
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)
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# Create a target directory for using with the target option
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target_temp_dir.create()
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install_options.append('--home=' + target_temp_dir.path)
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global_options = options.global_options or []
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with self._build_session(options) as session:
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finder = self._build_package_finder(
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options=options,
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session=session,
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platform=options.platform,
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python_versions=python_versions,
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abi=options.abi,
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implementation=options.implementation,
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)
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build_delete = (not (options.no_clean or options.build_dir))
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wheel_cache = WheelCache(options.cache_dir, options.format_control)
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if options.cache_dir and not check_path_owner(options.cache_dir):
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logger.warning(
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"The directory '%s' or its parent directory is not owned "
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"by the current user and caching wheels has been "
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"disabled. check the permissions and owner of that "
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"directory. If executing pip with sudo, you may want "
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"sudo's -H flag.",
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options.cache_dir,
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)
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options.cache_dir = None
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with RequirementTracker() as req_tracker, TempDirectory(
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options.build_dir, delete=build_delete, kind="install"
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) as directory:
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requirement_set = RequirementSet(
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require_hashes=options.require_hashes,
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check_supported_wheels=not options.target_dir,
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)
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try:
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self.populate_requirement_set(
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requirement_set, args, options, finder, session,
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self.name, wheel_cache
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)
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preparer = RequirementPreparer(
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build_dir=directory.path,
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src_dir=options.src_dir,
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download_dir=None,
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wheel_download_dir=None,
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progress_bar=options.progress_bar,
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build_isolation=options.build_isolation,
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req_tracker=req_tracker,
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)
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resolver = Resolver(
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preparer=preparer,
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finder=finder,
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session=session,
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wheel_cache=wheel_cache,
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use_user_site=options.use_user_site,
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upgrade_strategy=upgrade_strategy,
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force_reinstall=options.force_reinstall,
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ignore_dependencies=options.ignore_dependencies,
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ignore_requires_python=options.ignore_requires_python,
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ignore_installed=options.ignore_installed,
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isolated=options.isolated_mode,
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use_pep517=options.use_pep517
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)
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resolver.resolve(requirement_set)
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protect_pip_from_modification_on_windows(
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modifying_pip=requirement_set.has_requirement("pip")
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)
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# Consider legacy and PEP517-using requirements separately
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legacy_requirements = []
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pep517_requirements = []
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for req in requirement_set.requirements.values():
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if req.use_pep517:
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pep517_requirements.append(req)
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else:
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legacy_requirements.append(req)
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# We don't build wheels for legacy requirements if we
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# don't have wheel installed or we don't have a cache dir
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try:
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import wheel # noqa: F401
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build_legacy = bool(options.cache_dir)
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except ImportError:
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build_legacy = False
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wb = WheelBuilder(
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finder, preparer, wheel_cache,
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build_options=[], global_options=[],
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)
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# Always build PEP 517 requirements
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build_failures = wb.build(
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pep517_requirements,
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session=session, autobuilding=True
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)
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if build_legacy:
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# We don't care about failures building legacy
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# requirements, as we'll fall through to a direct
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# install for those.
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wb.build(
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legacy_requirements,
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session=session, autobuilding=True
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)
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# If we're using PEP 517, we cannot do a direct install
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# so we fail here.
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if build_failures:
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raise InstallationError(
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"Could not build wheels for {} which use"
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" PEP 517 and cannot be installed directly".format(
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", ".join(r.name for r in build_failures)))
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to_install = resolver.get_installation_order(
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requirement_set
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)
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# Consistency Checking of the package set we're installing.
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should_warn_about_conflicts = (
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not options.ignore_dependencies and
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options.warn_about_conflicts
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)
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if should_warn_about_conflicts:
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self._warn_about_conflicts(to_install)
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# Don't warn about script install locations if
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# --target has been specified
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warn_script_location = options.warn_script_location
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if options.target_dir:
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warn_script_location = False
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installed = install_given_reqs(
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to_install,
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install_options,
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global_options,
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root=options.root_path,
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home=target_temp_dir.path,
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prefix=options.prefix_path,
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pycompile=options.compile,
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warn_script_location=warn_script_location,
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use_user_site=options.use_user_site,
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)
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lib_locations = get_lib_location_guesses(
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user=options.use_user_site,
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home=target_temp_dir.path,
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root=options.root_path,
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prefix=options.prefix_path,
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isolated=options.isolated_mode,
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)
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working_set = pkg_resources.WorkingSet(lib_locations)
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reqs = sorted(installed, key=operator.attrgetter('name'))
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items = []
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for req in reqs:
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item = req.name
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try:
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installed_version = get_installed_version(
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req.name, working_set=working_set
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)
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if installed_version:
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item += '-' + installed_version
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except Exception:
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pass
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items.append(item)
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installed = ' '.join(items)
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if installed:
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logger.info('Successfully installed %s', installed)
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except EnvironmentError as error:
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show_traceback = (self.verbosity >= 1)
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message = create_env_error_message(
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error, show_traceback, options.use_user_site,
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)
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logger.error(message, exc_info=show_traceback)
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return ERROR
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except PreviousBuildDirError:
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options.no_clean = True
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raise
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finally:
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# Clean up
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if not options.no_clean:
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requirement_set.cleanup_files()
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wheel_cache.cleanup()
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if options.target_dir:
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self._handle_target_dir(
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options.target_dir, target_temp_dir, options.upgrade
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)
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return requirement_set
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def _handle_target_dir(self, target_dir, target_temp_dir, upgrade):
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ensure_dir(target_dir)
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# Checking both purelib and platlib directories for installed
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# packages to be moved to target directory
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lib_dir_list = []
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with target_temp_dir:
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# Checking both purelib and platlib directories for installed
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# packages to be moved to target directory
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scheme = distutils_scheme('', home=target_temp_dir.path)
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purelib_dir = scheme['purelib']
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platlib_dir = scheme['platlib']
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data_dir = scheme['data']
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if os.path.exists(purelib_dir):
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lib_dir_list.append(purelib_dir)
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if os.path.exists(platlib_dir) and platlib_dir != purelib_dir:
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lib_dir_list.append(platlib_dir)
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if os.path.exists(data_dir):
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lib_dir_list.append(data_dir)
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for lib_dir in lib_dir_list:
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for item in os.listdir(lib_dir):
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if lib_dir == data_dir:
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ddir = os.path.join(data_dir, item)
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if any(s.startswith(ddir) for s in lib_dir_list[:-1]):
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continue
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target_item_dir = os.path.join(target_dir, item)
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if os.path.exists(target_item_dir):
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if not upgrade:
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logger.warning(
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'Target directory %s already exists. Specify '
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'--upgrade to force replacement.',
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target_item_dir
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)
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continue
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if os.path.islink(target_item_dir):
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logger.warning(
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'Target directory %s already exists and is '
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'a link. Pip will not automatically replace '
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'links, please remove if replacement is '
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'desired.',
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target_item_dir
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)
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continue
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if os.path.isdir(target_item_dir):
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shutil.rmtree(target_item_dir)
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else:
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os.remove(target_item_dir)
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shutil.move(
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os.path.join(lib_dir, item),
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target_item_dir
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)
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def _warn_about_conflicts(self, to_install):
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try:
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package_set, _dep_info = check_install_conflicts(to_install)
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except Exception:
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logger.error("Error checking for conflicts.", exc_info=True)
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return
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missing, conflicting = _dep_info
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# NOTE: There is some duplication here from pip check
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for project_name in missing:
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version = package_set[project_name][0]
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for dependency in missing[project_name]:
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logger.critical(
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"%s %s requires %s, which is not installed.",
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project_name, version, dependency[1],
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)
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for project_name in conflicting:
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version = package_set[project_name][0]
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for dep_name, dep_version, req in conflicting[project_name]:
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logger.critical(
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"%s %s has requirement %s, but you'll have %s %s which is "
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"incompatible.",
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project_name, version, req, dep_name, dep_version,
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)
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def get_lib_location_guesses(*args, **kwargs):
|
|
scheme = distutils_scheme('', *args, **kwargs)
|
|
return [scheme['purelib'], scheme['platlib']]
|
|
|
|
|
|
def create_env_error_message(error, show_traceback, using_user_site):
|
|
"""Format an error message for an EnvironmentError
|
|
|
|
It may occur anytime during the execution of the install command.
|
|
"""
|
|
parts = []
|
|
|
|
# Mention the error if we are not going to show a traceback
|
|
parts.append("Could not install packages due to an EnvironmentError")
|
|
if not show_traceback:
|
|
parts.append(": ")
|
|
parts.append(str(error))
|
|
else:
|
|
parts.append(".")
|
|
|
|
# Spilt the error indication from a helper message (if any)
|
|
parts[-1] += "\n"
|
|
|
|
# Suggest useful actions to the user:
|
|
# (1) using user site-packages or (2) verifying the permissions
|
|
if error.errno == errno.EACCES:
|
|
user_option_part = "Consider using the `--user` option"
|
|
permissions_part = "Check the permissions"
|
|
|
|
if not using_user_site:
|
|
parts.extend([
|
|
user_option_part, " or ",
|
|
permissions_part.lower(),
|
|
])
|
|
else:
|
|
parts.append(permissions_part)
|
|
parts.append(".\n")
|
|
|
|
return "".join(parts).strip() + "\n"
|