Mercurial > repos > shellac > sam_consensus_v3
diff env/lib/python3.9/site-packages/pip/_internal/commands/install.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
---|---|
date | Mon, 22 Mar 2021 18:12:50 +0000 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/env/lib/python3.9/site-packages/pip/_internal/commands/install.py Mon Mar 22 18:12:50 2021 +0000 @@ -0,0 +1,733 @@ +import errno +import logging +import operator +import os +import shutil +import site +from optparse import SUPPRESS_HELP + +from pip._vendor import pkg_resources +from pip._vendor.packaging.utils import canonicalize_name + +from pip._internal.cache import WheelCache +from pip._internal.cli import cmdoptions +from pip._internal.cli.cmdoptions import make_target_python +from pip._internal.cli.req_command import RequirementCommand, with_cleanup +from pip._internal.cli.status_codes import ERROR, SUCCESS +from pip._internal.exceptions import CommandError, InstallationError +from pip._internal.locations import distutils_scheme +from pip._internal.operations.check import check_install_conflicts +from pip._internal.req import install_given_reqs +from pip._internal.req.req_tracker import get_requirement_tracker +from pip._internal.utils.distutils_args import parse_distutils_args +from pip._internal.utils.filesystem import test_writable_dir +from pip._internal.utils.misc import ( + ensure_dir, + get_installed_version, + get_pip_version, + protect_pip_from_modification_on_windows, + write_output, +) +from pip._internal.utils.temp_dir import TempDirectory +from pip._internal.utils.typing import MYPY_CHECK_RUNNING +from pip._internal.utils.virtualenv import virtualenv_no_global +from pip._internal.wheel_builder import build, should_build_for_install_command + +if MYPY_CHECK_RUNNING: + from optparse import Values + from typing import Iterable, List, Optional + + from pip._internal.models.format_control import FormatControl + from pip._internal.operations.check import ConflictDetails + from pip._internal.req.req_install import InstallRequirement + from pip._internal.wheel_builder import BinaryAllowedPredicate + + +logger = logging.getLogger(__name__) + + +def get_check_binary_allowed(format_control): + # type: (FormatControl) -> BinaryAllowedPredicate + def check_binary_allowed(req): + # type: (InstallRequirement) -> bool + canonical_name = canonicalize_name(req.name) + allowed_formats = format_control.get_allowed_formats(canonical_name) + return "binary" in allowed_formats + + return check_binary_allowed + + +class InstallCommand(RequirementCommand): + """ + Install packages from: + + - PyPI (and other indexes) using requirement specifiers. + - VCS project urls. + - Local project directories. + - Local or remote source archives. + + pip also supports installing from "requirements files", which provide + an easy way to specify a whole environment to be installed. + """ + + usage = """ + %prog [options] <requirement specifier> [package-index-options] ... + %prog [options] -r <requirements file> [package-index-options] ... + %prog [options] [-e] <vcs project url> ... + %prog [options] [-e] <local project path> ... + %prog [options] <archive url/path> ...""" + + def add_options(self): + # type: () -> None + self.cmd_opts.add_option(cmdoptions.requirements()) + self.cmd_opts.add_option(cmdoptions.constraints()) + self.cmd_opts.add_option(cmdoptions.no_deps()) + self.cmd_opts.add_option(cmdoptions.pre()) + + self.cmd_opts.add_option(cmdoptions.editable()) + self.cmd_opts.add_option( + '-t', '--target', + dest='target_dir', + metavar='dir', + default=None, + help='Install packages into <dir>. ' + 'By default this will not replace existing files/folders in ' + '<dir>. Use --upgrade to replace existing packages in <dir> ' + 'with new versions.' + ) + cmdoptions.add_target_python_options(self.cmd_opts) + + self.cmd_opts.add_option( + '--user', + dest='use_user_site', + action='store_true', + help="Install to the Python user install directory for your " + "platform. Typically ~/.local/, or %APPDATA%\\Python on " + "Windows. (See the Python documentation for site.USER_BASE " + "for full details.)") + self.cmd_opts.add_option( + '--no-user', + dest='use_user_site', + action='store_false', + help=SUPPRESS_HELP) + self.cmd_opts.add_option( + '--root', + dest='root_path', + metavar='dir', + default=None, + help="Install everything relative to this alternate root " + "directory.") + self.cmd_opts.add_option( + '--prefix', + dest='prefix_path', + metavar='dir', + default=None, + help="Installation prefix where lib, bin and other top-level " + "folders are placed") + + self.cmd_opts.add_option(cmdoptions.build_dir()) + + self.cmd_opts.add_option(cmdoptions.src()) + + self.cmd_opts.add_option( + '-U', '--upgrade', + dest='upgrade', + action='store_true', + help='Upgrade all specified packages to the newest available ' + 'version. The handling of dependencies depends on the ' + 'upgrade-strategy used.' + ) + + self.cmd_opts.add_option( + '--upgrade-strategy', + dest='upgrade_strategy', + default='only-if-needed', + choices=['only-if-needed', 'eager'], + help='Determines how dependency upgrading should be handled ' + '[default: %default]. ' + '"eager" - dependencies are upgraded regardless of ' + 'whether the currently installed version satisfies the ' + 'requirements of the upgraded package(s). ' + '"only-if-needed" - are upgraded only when they do not ' + 'satisfy the requirements of the upgraded package(s).' + ) + + self.cmd_opts.add_option( + '--force-reinstall', + dest='force_reinstall', + action='store_true', + help='Reinstall all packages even if they are already ' + 'up-to-date.') + + self.cmd_opts.add_option( + '-I', '--ignore-installed', + dest='ignore_installed', + action='store_true', + help='Ignore the installed packages, overwriting them. ' + 'This can break your system if the existing package ' + 'is of a different version or was installed ' + 'with a different package manager!' + ) + + self.cmd_opts.add_option(cmdoptions.ignore_requires_python()) + self.cmd_opts.add_option(cmdoptions.no_build_isolation()) + self.cmd_opts.add_option(cmdoptions.use_pep517()) + self.cmd_opts.add_option(cmdoptions.no_use_pep517()) + + self.cmd_opts.add_option(cmdoptions.install_options()) + self.cmd_opts.add_option(cmdoptions.global_options()) + + self.cmd_opts.add_option( + "--compile", + action="store_true", + dest="compile", + default=True, + help="Compile Python source files to bytecode", + ) + + self.cmd_opts.add_option( + "--no-compile", + action="store_false", + dest="compile", + help="Do not compile Python source files to bytecode", + ) + + self.cmd_opts.add_option( + "--no-warn-script-location", + action="store_false", + dest="warn_script_location", + default=True, + help="Do not warn when installing scripts outside PATH", + ) + self.cmd_opts.add_option( + "--no-warn-conflicts", + action="store_false", + dest="warn_about_conflicts", + default=True, + help="Do not warn about broken dependencies", + ) + + self.cmd_opts.add_option(cmdoptions.no_binary()) + self.cmd_opts.add_option(cmdoptions.only_binary()) + self.cmd_opts.add_option(cmdoptions.prefer_binary()) + self.cmd_opts.add_option(cmdoptions.require_hashes()) + self.cmd_opts.add_option(cmdoptions.progress_bar()) + + index_opts = cmdoptions.make_option_group( + cmdoptions.index_group, + self.parser, + ) + + self.parser.insert_option_group(0, index_opts) + self.parser.insert_option_group(0, self.cmd_opts) + + @with_cleanup + def run(self, options, args): + # type: (Values, List[str]) -> int + if options.use_user_site and options.target_dir is not None: + raise CommandError("Can not combine '--user' and '--target'") + + cmdoptions.check_install_build_global(options) + upgrade_strategy = "to-satisfy-only" + if options.upgrade: + upgrade_strategy = options.upgrade_strategy + + cmdoptions.check_dist_restriction(options, check_target=True) + + install_options = options.install_options or [] + + logger.debug("Using %s", get_pip_version()) + options.use_user_site = decide_user_install( + options.use_user_site, + prefix_path=options.prefix_path, + target_dir=options.target_dir, + root_path=options.root_path, + isolated_mode=options.isolated_mode, + ) + + target_temp_dir = None # type: Optional[TempDirectory] + target_temp_dir_path = None # type: Optional[str] + if options.target_dir: + options.ignore_installed = True + options.target_dir = os.path.abspath(options.target_dir) + if (os.path.exists(options.target_dir) and not + os.path.isdir(options.target_dir)): + raise CommandError( + "Target path exists but is not a directory, will not " + "continue." + ) + + # Create a target directory for using with the target option + target_temp_dir = TempDirectory(kind="target") + target_temp_dir_path = target_temp_dir.path + self.enter_context(target_temp_dir) + + global_options = options.global_options or [] + + session = self.get_default_session(options) + + target_python = make_target_python(options) + finder = self._build_package_finder( + options=options, + session=session, + target_python=target_python, + ignore_requires_python=options.ignore_requires_python, + ) + wheel_cache = WheelCache(options.cache_dir, options.format_control) + + req_tracker = self.enter_context(get_requirement_tracker()) + + directory = TempDirectory( + delete=not options.no_clean, + kind="install", + globally_managed=True, + ) + + try: + reqs = self.get_requirements(args, options, finder, session) + + reject_location_related_install_options( + reqs, options.install_options + ) + + preparer = self.make_requirement_preparer( + temp_build_dir=directory, + options=options, + req_tracker=req_tracker, + session=session, + finder=finder, + use_user_site=options.use_user_site, + ) + resolver = self.make_resolver( + preparer=preparer, + finder=finder, + options=options, + wheel_cache=wheel_cache, + use_user_site=options.use_user_site, + ignore_installed=options.ignore_installed, + ignore_requires_python=options.ignore_requires_python, + force_reinstall=options.force_reinstall, + upgrade_strategy=upgrade_strategy, + use_pep517=options.use_pep517, + ) + + self.trace_basic_info(finder) + + requirement_set = resolver.resolve( + reqs, check_supported_wheels=not options.target_dir + ) + + try: + pip_req = requirement_set.get_requirement("pip") + except KeyError: + modifying_pip = False + else: + # If we're not replacing an already installed pip, + # we're not modifying it. + modifying_pip = pip_req.satisfied_by is None + protect_pip_from_modification_on_windows( + modifying_pip=modifying_pip + ) + + check_binary_allowed = get_check_binary_allowed( + finder.format_control + ) + + reqs_to_build = [ + r for r in requirement_set.requirements.values() + if should_build_for_install_command( + r, check_binary_allowed + ) + ] + + _, build_failures = build( + reqs_to_build, + wheel_cache=wheel_cache, + verify=True, + build_options=[], + global_options=[], + ) + + # If we're using PEP 517, we cannot do a direct install + # so we fail here. + pep517_build_failure_names = [ + r.name # type: ignore + for r in build_failures if r.use_pep517 + ] # type: List[str] + if pep517_build_failure_names: + raise InstallationError( + "Could not build wheels for {} which use" + " PEP 517 and cannot be installed directly".format( + ", ".join(pep517_build_failure_names) + ) + ) + + # For now, we just warn about failures building legacy + # requirements, as we'll fall through to a direct + # install for those. + for r in build_failures: + if not r.use_pep517: + r.legacy_install_reason = 8368 + + to_install = resolver.get_installation_order( + requirement_set + ) + + # Check for conflicts in the package set we're installing. + conflicts = None # type: Optional[ConflictDetails] + should_warn_about_conflicts = ( + not options.ignore_dependencies and + options.warn_about_conflicts + ) + if should_warn_about_conflicts: + conflicts = self._determine_conflicts(to_install) + + # Don't warn about script install locations if + # --target has been specified + warn_script_location = options.warn_script_location + if options.target_dir: + warn_script_location = False + + installed = install_given_reqs( + to_install, + install_options, + global_options, + root=options.root_path, + home=target_temp_dir_path, + prefix=options.prefix_path, + warn_script_location=warn_script_location, + use_user_site=options.use_user_site, + pycompile=options.compile, + ) + + lib_locations = get_lib_location_guesses( + user=options.use_user_site, + home=target_temp_dir_path, + root=options.root_path, + prefix=options.prefix_path, + isolated=options.isolated_mode, + ) + working_set = pkg_resources.WorkingSet(lib_locations) + + installed.sort(key=operator.attrgetter('name')) + items = [] + for result in installed: + item = result.name + try: + installed_version = get_installed_version( + result.name, working_set=working_set + ) + if installed_version: + item += '-' + installed_version + except Exception: + pass + items.append(item) + + if conflicts is not None: + self._warn_about_conflicts( + conflicts, + resolver_variant=self.determine_resolver_variant(options), + ) + + installed_desc = ' '.join(items) + if installed_desc: + write_output( + 'Successfully installed %s', installed_desc, + ) + except OSError as error: + show_traceback = (self.verbosity >= 1) + + message = create_os_error_message( + error, show_traceback, options.use_user_site, + ) + logger.error(message, exc_info=show_traceback) # noqa + + return ERROR + + if options.target_dir: + assert target_temp_dir + self._handle_target_dir( + options.target_dir, target_temp_dir, options.upgrade + ) + + return SUCCESS + + def _handle_target_dir(self, target_dir, target_temp_dir, upgrade): + # type: (str, TempDirectory, bool) -> None + ensure_dir(target_dir) + + # Checking both purelib and platlib directories for installed + # packages to be moved to target directory + lib_dir_list = [] + + # Checking both purelib and platlib directories for installed + # packages to be moved to target directory + scheme = distutils_scheme('', home=target_temp_dir.path) + purelib_dir = scheme['purelib'] + platlib_dir = scheme['platlib'] + data_dir = scheme['data'] + + if os.path.exists(purelib_dir): + lib_dir_list.append(purelib_dir) + if os.path.exists(platlib_dir) and platlib_dir != purelib_dir: + lib_dir_list.append(platlib_dir) + if os.path.exists(data_dir): + lib_dir_list.append(data_dir) + + for lib_dir in lib_dir_list: + for item in os.listdir(lib_dir): + if lib_dir == data_dir: + ddir = os.path.join(data_dir, item) + if any(s.startswith(ddir) for s in lib_dir_list[:-1]): + continue + target_item_dir = os.path.join(target_dir, item) + if os.path.exists(target_item_dir): + if not upgrade: + logger.warning( + 'Target directory %s already exists. Specify ' + '--upgrade to force replacement.', + target_item_dir + ) + continue + if os.path.islink(target_item_dir): + logger.warning( + 'Target directory %s already exists and is ' + 'a link. pip will not automatically replace ' + 'links, please remove if replacement is ' + 'desired.', + target_item_dir + ) + continue + if os.path.isdir(target_item_dir): + shutil.rmtree(target_item_dir) + else: + os.remove(target_item_dir) + + shutil.move( + os.path.join(lib_dir, item), + target_item_dir + ) + + def _determine_conflicts(self, to_install): + # type: (List[InstallRequirement]) -> Optional[ConflictDetails] + try: + return check_install_conflicts(to_install) + except Exception: + logger.exception( + "Error while checking for conflicts. Please file an issue on " + "pip's issue tracker: https://github.com/pypa/pip/issues/new" + ) + return None + + def _warn_about_conflicts(self, conflict_details, resolver_variant): + # type: (ConflictDetails, str) -> None + package_set, (missing, conflicting) = conflict_details + if not missing and not conflicting: + return + + parts = [] # type: List[str] + if resolver_variant == "legacy": + parts.append( + "pip's legacy dependency resolver does not consider dependency " + "conflicts when selecting packages. This behaviour is the " + "source of the following dependency conflicts." + ) + else: + assert resolver_variant == "2020-resolver" + parts.append( + "pip's dependency resolver does not currently take into account " + "all the packages that are installed. This behaviour is the " + "source of the following dependency conflicts." + ) + + # NOTE: There is some duplication here, with commands/check.py + for project_name in missing: + version = package_set[project_name][0] + for dependency in missing[project_name]: + message = ( + "{name} {version} requires {requirement}, " + "which is not installed." + ).format( + name=project_name, + version=version, + requirement=dependency[1], + ) + parts.append(message) + + for project_name in conflicting: + version = package_set[project_name][0] + for dep_name, dep_version, req in conflicting[project_name]: + message = ( + "{name} {version} requires {requirement}, but {you} have " + "{dep_name} {dep_version} which is incompatible." + ).format( + name=project_name, + version=version, + requirement=req, + dep_name=dep_name, + dep_version=dep_version, + you=("you" if resolver_variant == "2020-resolver" else "you'll") + ) + parts.append(message) + + logger.critical("\n".join(parts)) + + +def get_lib_location_guesses( + user=False, # type: bool + home=None, # type: Optional[str] + root=None, # type: Optional[str] + isolated=False, # type: bool + prefix=None # type: Optional[str] +): + # type:(...) -> List[str] + scheme = distutils_scheme('', user=user, home=home, root=root, + isolated=isolated, prefix=prefix) + return [scheme['purelib'], scheme['platlib']] + + +def site_packages_writable(root, isolated): + # type: (Optional[str], bool) -> bool + return all( + test_writable_dir(d) for d in set( + get_lib_location_guesses(root=root, isolated=isolated)) + ) + + +def decide_user_install( + use_user_site, # type: Optional[bool] + prefix_path=None, # type: Optional[str] + target_dir=None, # type: Optional[str] + root_path=None, # type: Optional[str] + isolated_mode=False, # type: bool +): + # type: (...) -> bool + """Determine whether to do a user install based on the input options. + + If use_user_site is False, no additional checks are done. + If use_user_site is True, it is checked for compatibility with other + options. + If use_user_site is None, the default behaviour depends on the environment, + which is provided by the other arguments. + """ + # In some cases (config from tox), use_user_site can be set to an integer + # rather than a bool, which 'use_user_site is False' wouldn't catch. + if (use_user_site is not None) and (not use_user_site): + logger.debug("Non-user install by explicit request") + return False + + if use_user_site: + if prefix_path: + raise CommandError( + "Can not combine '--user' and '--prefix' as they imply " + "different installation locations" + ) + if virtualenv_no_global(): + raise InstallationError( + "Can not perform a '--user' install. User site-packages " + "are not visible in this virtualenv." + ) + logger.debug("User install by explicit request") + return True + + # If we are here, user installs have not been explicitly requested/avoided + assert use_user_site is None + + # user install incompatible with --prefix/--target + if prefix_path or target_dir: + logger.debug("Non-user install due to --prefix or --target option") + return False + + # If user installs are not enabled, choose a non-user install + if not site.ENABLE_USER_SITE: + logger.debug("Non-user install because user site-packages disabled") + return False + + # If we have permission for a non-user install, do that, + # otherwise do a user install. + if site_packages_writable(root=root_path, isolated=isolated_mode): + logger.debug("Non-user install because site-packages writeable") + return False + + logger.info("Defaulting to user installation because normal site-packages " + "is not writeable") + return True + + +def reject_location_related_install_options(requirements, options): + # type: (List[InstallRequirement], Optional[List[str]]) -> None + """If any location-changing --install-option arguments were passed for + requirements or on the command-line, then show a deprecation warning. + """ + def format_options(option_names): + # type: (Iterable[str]) -> List[str] + return ["--{}".format(name.replace("_", "-")) for name in option_names] + + offenders = [] + + for requirement in requirements: + install_options = requirement.install_options + location_options = parse_distutils_args(install_options) + if location_options: + offenders.append( + "{!r} from {}".format( + format_options(location_options.keys()), requirement + ) + ) + + if options: + location_options = parse_distutils_args(options) + if location_options: + offenders.append( + "{!r} from command line".format( + format_options(location_options.keys()) + ) + ) + + if not offenders: + return + + raise CommandError( + "Location-changing options found in --install-option: {}." + " This is unsupported, use pip-level options like --user," + " --prefix, --root, and --target instead.".format( + "; ".join(offenders) + ) + ) + + +def create_os_error_message(error, show_traceback, using_user_site): + # type: (OSError, bool, bool) -> str + """Format an error message for an OSError + + 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 OSError") + 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"