mirror of https://github.com/pypa/pip
357 lines
13 KiB
Python
357 lines
13 KiB
Python
from __future__ import absolute_import
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import logging
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import os
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import tempfile
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import shutil
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import warnings
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from pip.req import InstallRequirement, RequirementSet, parse_requirements
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from pip.locations import (virtualenv_no_global, distutils_scheme,
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build_prefix)
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from pip.basecommand import Command
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from pip.index import PackageFinder
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from pip.exceptions import (
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InstallationError, CommandError, PreviousBuildDirError,
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)
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from pip import cmdoptions
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from pip.utils.deprecation import RemovedInPip17Warning, RemovedInPip18Warning
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logger = logging.getLogger(__name__)
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class InstallCommand(Command):
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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.editable.make())
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cmd_opts.add_option(cmdoptions.requirements.make())
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cmd_opts.add_option(cmdoptions.build_dir.make())
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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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cmd_opts.add_option(
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'-d', '--download', '--download-dir', '--download-directory',
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dest='download_dir',
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metavar='dir',
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default=None,
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help=("Download packages into <dir> instead of installing them, "
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"regardless of what's already installed."),
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)
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cmd_opts.add_option(cmdoptions.download_cache.make())
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cmd_opts.add_option(cmdoptions.src.make())
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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 packages to the newest available version. '
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'This process is recursive regardless of whether a dependency'
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' is already satisfied.'
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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='When upgrading, reinstall all packages even if they are '
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'already 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.no_deps.make())
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cmd_opts.add_option(
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'--no-install',
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dest='no_install',
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action='store_true',
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help="DEPRECATED. Download and unpack all packages, but don't "
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"actually install them."
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)
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cmd_opts.add_option(
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'--no-download',
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dest='no_download',
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action="store_true",
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help="DEPRECATED. Don't download any packages, just install the "
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"ones already downloaded (completes an install run with "
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"--no-install).")
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cmd_opts.add_option(cmdoptions.install_options.make())
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cmd_opts.add_option(cmdoptions.global_options.make())
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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 using the user scheme.')
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cmd_opts.add_option(
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'--egg',
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dest='as_egg',
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action='store_true',
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help="Install packages as eggs, not 'flat', like pip normally "
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"does. This option is not about installing *from* eggs. "
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"(WARNING: Because this option overrides pip's normal install"
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" logic, requirements files may not behave as expected.)")
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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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"--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 py files to pyc",
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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 py files to pyc",
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)
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cmd_opts.add_option(cmdoptions.use_wheel.make())
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cmd_opts.add_option(cmdoptions.no_use_wheel.make())
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cmd_opts.add_option(
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'--pre',
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action='store_true',
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default=False,
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help="Include pre-release and development versions. By default, "
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"pip only finds stable versions.")
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cmd_opts.add_option(cmdoptions.no_clean.make())
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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 _build_package_finder(self, options, index_urls, session):
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"""
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Create a package finder appropriate to this install command.
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This method is meant to be overridden by subclasses, not
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called directly.
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"""
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return PackageFinder(
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find_links=options.find_links,
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index_urls=index_urls,
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use_wheel=options.use_wheel,
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allow_external=options.allow_external,
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allow_unverified=options.allow_unverified,
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allow_all_external=options.allow_all_external,
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allow_all_prereleases=options.pre,
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process_dependency_links=options.process_dependency_links,
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session=session,
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)
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def run(self, options, args):
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if (
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options.no_install or
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options.no_download or
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(options.build_dir != build_prefix) or
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options.no_clean
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):
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warnings.warn(
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"--no-install, --no-download, --build, and --no-clean are "
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"deprecated. See https://github.com/pypa/pip/issues/906.",
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RemovedInPip17Warning,
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)
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if options.download_dir:
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options.no_install = True
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options.ignore_installed = True
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options.build_dir = os.path.abspath(options.build_dir)
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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 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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temp_target_dir = None
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if options.target_dir:
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options.ignore_installed = True
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temp_target_dir = tempfile.mkdtemp()
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options.target_dir = os.path.abspath(options.target_dir)
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if (os.path.exists(options.target_dir)
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and not 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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install_options.append('--home=' + temp_target_dir)
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global_options = options.global_options or []
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index_urls = [options.index_url] + options.extra_index_urls
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if options.no_index:
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logger.info('Ignoring indexes: %s', ','.join(index_urls))
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index_urls = []
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if options.use_mirrors:
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warnings.warn(
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"--use-mirrors has been deprecated and will be removed in the "
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"future. Explicit uses of --index-url and/or --extra-index-url"
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" is suggested.",
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RemovedInPip17Warning,
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)
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if options.mirrors:
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warnings.warn(
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"--mirrors has been deprecated and will be removed in the "
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"future. Explicit uses of --index-url and/or --extra-index-url"
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" is suggested.",
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RemovedInPip17Warning,
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)
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index_urls += options.mirrors
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if options.download_cache:
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warnings.warn(
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"--download-cache has been deprecated and will be removed in "
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"the future. Pip now automatically uses and configures its "
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"cache.",
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RemovedInPip18Warning,
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)
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with self._build_session(options) as session:
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finder = self._build_package_finder(options, index_urls, session)
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requirement_set = RequirementSet(
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build_dir=options.build_dir,
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src_dir=options.src_dir,
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download_dir=options.download_dir,
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upgrade=options.upgrade,
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as_egg=options.as_egg,
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ignore_installed=options.ignore_installed,
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ignore_dependencies=options.ignore_dependencies,
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force_reinstall=options.force_reinstall,
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use_user_site=options.use_user_site,
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target_dir=temp_target_dir,
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session=session,
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pycompile=options.compile,
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)
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for name in args:
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requirement_set.add_requirement(
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InstallRequirement.from_line(name, None))
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for name in options.editables:
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requirement_set.add_requirement(
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InstallRequirement.from_editable(
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name,
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default_vcs=options.default_vcs
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)
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)
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for filename in options.requirements:
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for req in parse_requirements(
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filename,
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finder=finder, options=options, session=session):
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requirement_set.add_requirement(req)
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if not requirement_set.has_requirements:
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opts = {'name': self.name}
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if options.find_links:
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msg = ('You must give at least one requirement to %(name)s'
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' (maybe you meant "pip %(name)s %(links)s"?)' %
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dict(opts, links=' '.join(options.find_links)))
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else:
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msg = ('You must give at least one requirement '
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'to %(name)s (see "pip help %(name)s")' % opts)
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logger.warning(msg)
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return
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try:
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if not options.no_download:
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requirement_set.prepare_files(finder)
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else:
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requirement_set.locate_files()
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if not options.no_install:
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requirement_set.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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)
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installed = ' '.join([
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req.name for req in
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requirement_set.successfully_installed
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])
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if installed:
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logger.info('Successfully installed %s', installed)
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else:
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downloaded = ' '.join([
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req.name
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for req in requirement_set.successfully_downloaded
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])
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if downloaded:
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logger.info('Successfully downloaded %s', downloaded)
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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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and ((not options.no_install)
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or options.download_dir)):
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requirement_set.cleanup_files()
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if options.target_dir:
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if not os.path.exists(options.target_dir):
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os.makedirs(options.target_dir)
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lib_dir = distutils_scheme('', home=temp_target_dir)['purelib']
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for item in os.listdir(lib_dir):
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shutil.move(
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os.path.join(lib_dir, item),
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os.path.join(options.target_dir, item),
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)
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shutil.rmtree(temp_target_dir)
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return requirement_set
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