示例#1
0
def show_tags(options: Values) -> None:
    tag_limit = 10

    target_python = make_target_python(options)
    tags = target_python.get_tags()

    # Display the target options that were explicitly provided.
    formatted_target = target_python.format_given()
    suffix = ''
    if formatted_target:
        suffix = f' (target: {formatted_target})'

    msg = 'Compatible tags: {}{}'.format(len(tags), suffix)
    logger.info(msg)

    if options.verbose < 1 and len(tags) > tag_limit:
        tags_limited = True
        tags = tags[:tag_limit]
    else:
        tags_limited = False

    with indent_log():
        for tag in tags:
            logger.info(str(tag))

        if tags_limited:
            msg = (
                '...\n'
                '[First {tag_limit} tags shown. Pass --verbose to show all.]'
            ).format(tag_limit=tag_limit)
            logger.info(msg)
示例#2
0
    def get_available_package_versions(self, options: Values,
                                       args: List[Any]) -> None:
        if len(args) != 1:
            raise CommandError('You need to specify exactly one argument')

        target_python = cmdoptions.make_target_python(options)
        query = args[0]

        with self._build_session(options) as session:
            finder = self._build_package_finder(
                options=options,
                session=session,
                target_python=target_python,
                ignore_requires_python=options.ignore_requires_python,
            )

            versions: Iterable[Union[LegacyVersion, Version]] = (
                candidate.version
                for candidate in finder.find_all_candidates(query))

            if not options.pre:
                # Remove prereleases
                versions = (version for version in versions
                            if not version.is_prerelease)
            versions = set(versions)

            if not versions:
                raise DistributionNotFound(
                    'No matching distribution found for {}'.format(query))

            formatted_versions = [
                str(ver) for ver in sorted(versions, reverse=True)
            ]
            latest = formatted_versions[0]

        write_output('{} ({})'.format(query, latest))
        write_output('Available versions: {}'.format(
            ', '.join(formatted_versions)))
        print_dist_installation_info(query, latest)
示例#3
0
    def run(self, options, args):
        options.ignore_installed = True
        # editable doesn't really make sense for `pip download`, but the bowels
        # of the RequirementSet code require that property.
        options.editables = []

        cmdoptions.check_dist_restriction(options)

        options.src_dir = os.path.abspath(options.src_dir)
        options.download_dir = normalize_path(options.download_dir)

        ensure_dir(options.download_dir)

        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,
        )
        build_delete = (not (options.no_clean or options.build_dir))
        if options.cache_dir and not check_path_owner(options.cache_dir):
            logger.warning(
                "The directory '%s' or its parent directory is not owned "
                "by the current user and caching wheels has been "
                "disabled. check the permissions and owner of that "
                "directory. If executing pip with sudo, you may want "
                "sudo's -H flag.",
                options.cache_dir,
            )
            options.cache_dir = None

        with RequirementTracker() as req_tracker, TempDirectory(
            options.build_dir, delete=build_delete, kind="download"
        ) as directory:

            requirement_set = RequirementSet(
                require_hashes=options.require_hashes,
            )
            self.populate_requirement_set(
                requirement_set,
                args,
                options,
                finder,
                session,
                None
            )

            preparer = self.make_requirement_preparer(
                temp_build_dir=directory,
                options=options,
                req_tracker=req_tracker,
                download_dir=options.download_dir,
            )

            resolver = self.make_resolver(
                preparer=preparer,
                finder=finder,
                session=session,
                options=options,
                py_version_info=options.python_version,
            )
            resolver.resolve(requirement_set)

            downloaded = ' '.join([
                req.name for req in requirement_set.successfully_downloaded
            ])
            if downloaded:
                write_output('Successfully downloaded %s', downloaded)

            # Clean up
            if not options.no_clean:
                requirement_set.cleanup_files()

        return requirement_set
示例#4
0
    def run(self, options: Values, args: 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.verbose("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: Optional[TempDirectory] = None
        target_temp_dir_path: Optional[str] = None
        if options.target_dir:
            options.ignore_installed = True
            options.target_dir = os.path.abspath(options.target_dir)
            if (
                    # fmt: off
                    os.path.exists(options.target_dir)
                    and not os.path.isdir(options.target_dir)
                    # fmt: on
            ):
                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)

            # Only when installing is it permitted to use PEP 660.
            # In other circumstances (pip wheel, pip download) we generate
            # regular (i.e. non editable) metadata and wheels.
            for req in reqs:
                req.permit_editable_wheels = True

            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,
                verbosity=self.verbosity,
            )
            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 legacy setup.py install
            # so we fail here.
            pep517_build_failure_names: List[str] = [
                r.name for r in build_failures if r.use_pep517  # type: ignore
            ]
            if pep517_build_failure_names:
                raise InstallationError(
                    "Could not build wheels for {}, which is required to "
                    "install pyproject.toml-based projects".format(
                        ", ".join(pep517_build_failure_names)))

            # For now, we just warn about failures building legacy
            # requirements, as we'll fall through to a setup.py 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: Optional[ConflictDetails] = None
            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 or --prefix has been specified
            warn_script_location = options.warn_script_location
            if options.target_dir or options.prefix_path:
                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,
            )
            env = get_environment(lib_locations)

            installed.sort(key=operator.attrgetter("name"))
            items = []
            for result in installed:
                item = result.name
                try:
                    installed_dist = env.get_distribution(item)
                    if installed_dist is not None:
                        item = f"{item}-{installed_dist.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)

        warn_if_run_as_root()
        return SUCCESS
    def run(self, options, args):
        options.ignore_installed = True
        # editable doesn't really make sense for `pip download`, but the bowels
        # of the RequirementSet code require that property.
        options.editables = []

        cmdoptions.check_dist_restriction(options)

        options.download_dir = normalize_path(options.download_dir)

        ensure_dir(options.download_dir)

        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,
        )
        build_delete = (not (options.no_clean or options.build_dir))

        with get_requirement_tracker() as req_tracker, TempDirectory(
            options.build_dir, delete=build_delete, kind="download"
        ) as directory:

            requirement_set = RequirementSet()
            self.populate_requirement_set(
                requirement_set,
                args,
                options,
                finder,
                session,
                None
            )

            preparer = self.make_requirement_preparer(
                temp_build_dir=directory,
                options=options,
                req_tracker=req_tracker,
                session=session,
                finder=finder,
                download_dir=options.download_dir,
                use_user_site=False,
            )

            resolver = self.make_resolver(
                preparer=preparer,
                finder=finder,
                options=options,
                py_version_info=options.python_version,
            )

            self.trace_basic_info(finder)

            resolver.resolve(requirement_set)

            downloaded = ' '.join([
                req.name for req in requirement_set.successfully_downloaded
            ])
            if downloaded:
                write_output('Successfully downloaded %s', downloaded)

            # Clean up
            if not options.no_clean:
                requirement_set.cleanup_files()

        return requirement_set
示例#6
0
    def run(self, options, args):
        # type: (Values, List[Any]) -> int
        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 []

        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

        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,
        )
        build_delete = (not (options.no_clean or options.build_dir))
        wheel_cache = WheelCache(options.cache_dir, options.format_control)

        with get_requirement_tracker() as req_tracker, TempDirectory(
                options.build_dir, delete=build_delete,
                kind="install") as directory:
            requirement_set = RequirementSet(
                check_supported_wheels=not options.target_dir, )

            try:
                self.populate_requirement_set(requirement_set, args, options,
                                              finder, session, wheel_cache)

                warn_deprecated_install_options(requirement_set,
                                                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)

                resolver.resolve(requirement_set)

                try:
                    pip_req = requirement_set.get_requirement("pip")
                except KeyError:
                    modifying_pip = None
                else:
                    # If we're not replacing an already installed pip,
                    # we're not modifying it.
                    modifying_pip = getattr(pip_req, "satisfied_by",
                                            None) 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,
                    build_options=[],
                    global_options=[],
                )

                # If we're using PEP 517, we cannot do a direct install
                # so we fail here.
                # We don't care about failures building legacy
                # requirements, as we'll fall through to a direct
                # install for those.
                pep517_build_failures = [
                    r for r in build_failures if r.use_pep517
                ]
                if pep517_build_failures:
                    raise InstallationError(
                        "Could not build wheels for {} which use"
                        " PEP 517 and cannot be installed directly".format(
                            ", ".join(r.name for r in pep517_build_failures)))

                to_install = resolver.get_installation_order(requirement_set)

                # Consistency Checking of the package set we're installing.
                should_warn_about_conflicts = (not options.ignore_dependencies
                                               and
                                               options.warn_about_conflicts)
                if should_warn_about_conflicts:
                    self._warn_about_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,
                    pycompile=options.compile,
                    warn_script_location=warn_script_location,
                    use_user_site=options.use_user_site,
                )

                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)
                installed_desc = ' '.join(items)
                if installed_desc:
                    write_output(
                        'Successfully installed %s',
                        installed_desc,
                    )
            except EnvironmentError as error:
                show_traceback = (self.verbosity >= 1)

                message = create_env_error_message(
                    error,
                    show_traceback,
                    options.use_user_site,
                )
                logger.error(message, exc_info=show_traceback)

                return ERROR
            except PreviousBuildDirError:
                options.no_clean = True
                raise
            finally:
                # Clean up
                if not options.no_clean:
                    requirement_set.cleanup_files()
                    wheel_cache.cleanup()

        if options.target_dir:
            self._handle_target_dir(options.target_dir, target_temp_dir,
                                    options.upgrade)

        return SUCCESS
示例#7
0
    def run(self, options, args):
        # type: (Values, List[Any]) -> int
        cmdoptions.check_install_build_global(options)
        upgrade_strategy = "to-satisfy-only"
        if options.upgrade:
            upgrade_strategy = options.upgrade_strategy

        if options.build_dir:
            options.build_dir = os.path.abspath(options.build_dir)

        cmdoptions.check_dist_restriction(options, check_target=True)

        options.src_dir = os.path.abspath(options.src_dir)
        install_options = options.install_options or []
        if options.use_user_site:
            if options.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.")
            install_options.append('--user')
            install_options.append('--prefix=')

        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
            install_options.append('--home=' + target_temp_dir_path)

        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,
        )
        build_delete = (not (options.no_clean or options.build_dir))
        wheel_cache = WheelCache(options.cache_dir, options.format_control)

        if options.cache_dir and not check_path_owner(options.cache_dir):
            logger.warning(
                "The directory '%s' or its parent directory is not owned "
                "by the current user and caching wheels has been "
                "disabled. check the permissions and owner of that "
                "directory. If executing pip with sudo, you may want "
                "sudo's -H flag.",
                options.cache_dir,
            )
            options.cache_dir = None

        with RequirementTracker() as req_tracker, TempDirectory(
                options.build_dir, delete=build_delete,
                kind="install") as directory:
            requirement_set = RequirementSet(
                require_hashes=options.require_hashes,
                check_supported_wheels=not options.target_dir,
            )

            try:
                self.populate_requirement_set(requirement_set, args, options,
                                              finder, session, wheel_cache)
                preparer = self.make_requirement_preparer(
                    temp_build_dir=directory,
                    options=options,
                    req_tracker=req_tracker,
                )
                resolver = self.make_resolver(
                    preparer=preparer,
                    finder=finder,
                    session=session,
                    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,
                )
                resolver.resolve(requirement_set)

                try:
                    pip_req = requirement_set.get_requirement("pip")
                except KeyError:
                    modifying_pip = None
                else:
                    # If we're not replacing an already installed pip,
                    # we're not modifying it.
                    modifying_pip = getattr(pip_req, "satisfied_by",
                                            None) is None
                protect_pip_from_modification_on_windows(
                    modifying_pip=modifying_pip)

                check_binary_allowed = get_check_binary_allowed(
                    finder.format_control)
                # Consider legacy and PEP517-using requirements separately
                legacy_requirements = []
                pep517_requirements = []
                for req in requirement_set.requirements.values():
                    if req.use_pep517:
                        pep517_requirements.append(req)
                    else:
                        legacy_requirements.append(req)

                wheel_builder = WheelBuilder(
                    preparer,
                    wheel_cache,
                    build_options=[],
                    global_options=[],
                    check_binary_allowed=check_binary_allowed,
                )

                build_failures = build_wheels(
                    builder=wheel_builder,
                    pep517_requirements=pep517_requirements,
                    legacy_requirements=legacy_requirements,
                )

                # If we're using PEP 517, we cannot do a direct install
                # so we fail here.
                if build_failures:
                    raise InstallationError(
                        "Could not build wheels for {} which use"
                        " PEP 517 and cannot be installed directly".format(
                            ", ".join(r.name for r in build_failures)))

                to_install = resolver.get_installation_order(requirement_set)

                # Consistency Checking of the package set we're installing.
                should_warn_about_conflicts = (not options.ignore_dependencies
                                               and
                                               options.warn_about_conflicts)
                if should_warn_about_conflicts:
                    self._warn_about_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,
                    pycompile=options.compile,
                    warn_script_location=warn_script_location,
                    use_user_site=options.use_user_site,
                )

                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)

                reqs = sorted(installed, key=operator.attrgetter('name'))
                items = []
                for req in reqs:
                    item = req.name
                    try:
                        installed_version = get_installed_version(
                            req.name, working_set=working_set)
                        if installed_version:
                            item += '-' + installed_version
                    except Exception:
                        pass
                    items.append(item)
                installed_desc = ' '.join(items)
                if installed_desc:
                    write_output(
                        'Successfully installed %s',
                        installed_desc,
                    )
            except EnvironmentError as error:
                show_traceback = (self.verbosity >= 1)

                message = create_env_error_message(
                    error,
                    show_traceback,
                    options.use_user_site,
                )
                logger.error(message, exc_info=show_traceback)

                return ERROR
            except PreviousBuildDirError:
                options.no_clean = True
                raise
            finally:
                # Clean up
                if not options.no_clean:
                    requirement_set.cleanup_files()
                    wheel_cache.cleanup()

        if options.target_dir:
            self._handle_target_dir(options.target_dir, target_temp_dir,
                                    options.upgrade)

        return SUCCESS
示例#8
0
    def run(self, options: Values, args: List[str]) -> int:

        options.ignore_installed = True
        # editable doesn't really make sense for `pip download`, but the bowels
        # of the RequirementSet code require that property.
        options.editables = []

        cmdoptions.check_dist_restriction(options)

        options.download_dir = normalize_path(options.download_dir)
        ensure_dir(options.download_dir)

        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,
        )

        req_tracker = self.enter_context(get_requirement_tracker())

        directory = TempDirectory(
            delete=not options.no_clean,
            kind="download",
            globally_managed=True,
        )

        reqs = self.get_requirements(args, options, finder, session)

        preparer = self.make_requirement_preparer(
            temp_build_dir=directory,
            options=options,
            req_tracker=req_tracker,
            session=session,
            finder=finder,
            download_dir=options.download_dir,
            use_user_site=False,
            verbosity=self.verbosity,
        )

        resolver = self.make_resolver(
            preparer=preparer,
            finder=finder,
            options=options,
            ignore_requires_python=options.ignore_requires_python,
            py_version_info=options.python_version,
        )

        self.trace_basic_info(finder)

        requirement_set = resolver.resolve(reqs, check_supported_wheels=True)

        downloaded: List[str] = []
        for req in requirement_set.requirements.values():
            if req.satisfied_by is None:
                assert req.name is not None
                preparer.save_linked_requirement(req)
                downloaded.append(req.name)
        if downloaded:
            write_output("Successfully downloaded %s", " ".join(downloaded))

        return SUCCESS