no venv

1 files changed, 0 insertions, 730 deletions

diff --git a/venv/lib/python3.11/site-packages/pip/_internal/operations/prepare.py b/venv/lib/python3.11/site-packages/pip/_internal/operations/prepare.py
deleted file mode 100644
index 956717d..0000000
--- a/venv/lib/python3.11/site-packages/pip/_internal/operations/prepare.py
+++ /dev/null
@@ -1,730 +0,0 @@
-"""Prepares a distribution for installation
-"""
-
-# The following comment should be removed at some point in the future.
-# mypy: strict-optional=False
-
-import mimetypes
-import os
-import shutil
-from pathlib import Path
-from typing import Dict, Iterable, List, Optional
-
-from pip._vendor.packaging.utils import canonicalize_name
-
-from pip._internal.distributions import make_distribution_for_install_requirement
-from pip._internal.distributions.installed import InstalledDistribution
-from pip._internal.exceptions import (
-    DirectoryUrlHashUnsupported,
-    HashMismatch,
-    HashUnpinned,
-    InstallationError,
-    MetadataInconsistent,
-    NetworkConnectionError,
-    VcsHashUnsupported,
-)
-from pip._internal.index.package_finder import PackageFinder
-from pip._internal.metadata import BaseDistribution, get_metadata_distribution
-from pip._internal.models.direct_url import ArchiveInfo
-from pip._internal.models.link import Link
-from pip._internal.models.wheel import Wheel
-from pip._internal.network.download import BatchDownloader, Downloader
-from pip._internal.network.lazy_wheel import (
-    HTTPRangeRequestUnsupported,
-    dist_from_wheel_url,
-)
-from pip._internal.network.session import PipSession
-from pip._internal.operations.build.build_tracker import BuildTracker
-from pip._internal.req.req_install import InstallRequirement
-from pip._internal.utils._log import getLogger
-from pip._internal.utils.direct_url_helpers import (
-    direct_url_for_editable,
-    direct_url_from_link,
-)
-from pip._internal.utils.hashes import Hashes, MissingHashes
-from pip._internal.utils.logging import indent_log
-from pip._internal.utils.misc import (
-    display_path,
-    hash_file,
-    hide_url,
-    redact_auth_from_requirement,
-)
-from pip._internal.utils.temp_dir import TempDirectory
-from pip._internal.utils.unpacking import unpack_file
-from pip._internal.vcs import vcs
-
-logger = getLogger(__name__)
-
-
-def _get_prepared_distribution(
-    req: InstallRequirement,
-    build_tracker: BuildTracker,
-    finder: PackageFinder,
-    build_isolation: bool,
-    check_build_deps: bool,
-) -> BaseDistribution:
-    """Prepare a distribution for installation."""
-    abstract_dist = make_distribution_for_install_requirement(req)
-    tracker_id = abstract_dist.build_tracker_id
-    if tracker_id is not None:
-        with build_tracker.track(req, tracker_id):
-            abstract_dist.prepare_distribution_metadata(
-                finder, build_isolation, check_build_deps
-            )
-    return abstract_dist.get_metadata_distribution()
-
-
-def unpack_vcs_link(link: Link, location: str, verbosity: int) -> None:
-    vcs_backend = vcs.get_backend_for_scheme(link.scheme)
-    assert vcs_backend is not None
-    vcs_backend.unpack(location, url=hide_url(link.url), verbosity=verbosity)
-
-
-class File:
-    def __init__(self, path: str, content_type: Optional[str]) -> None:
-        self.path = path
-        if content_type is None:
-            self.content_type = mimetypes.guess_type(path)[0]
-        else:
-            self.content_type = content_type
-
-
-def get_http_url(
-    link: Link,
-    download: Downloader,
-    download_dir: Optional[str] = None,
-    hashes: Optional[Hashes] = None,
-) -> File:
-    temp_dir = TempDirectory(kind="unpack", globally_managed=True)
-    # If a download dir is specified, is the file already downloaded there?
-    already_downloaded_path = None
-    if download_dir:
-        already_downloaded_path = _check_download_dir(link, download_dir, hashes)
-
-    if already_downloaded_path:
-        from_path = already_downloaded_path
-        content_type = None
-    else:
-        # let's download to a tmp dir
-        from_path, content_type = download(link, temp_dir.path)
-        if hashes:
-            hashes.check_against_path(from_path)
-
-    return File(from_path, content_type)
-
-
-def get_file_url(
-    link: Link, download_dir: Optional[str] = None, hashes: Optional[Hashes] = None
-) -> File:
-    """Get file and optionally check its hash."""
-    # If a download dir is specified, is the file already there and valid?
-    already_downloaded_path = None
-    if download_dir:
-        already_downloaded_path = _check_download_dir(link, download_dir, hashes)
-
-    if already_downloaded_path:
-        from_path = already_downloaded_path
-    else:
-        from_path = link.file_path
-
-    # If --require-hashes is off, `hashes` is either empty, the
-    # link's embedded hash, or MissingHashes; it is required to
-    # match. If --require-hashes is on, we are satisfied by any
-    # hash in `hashes` matching: a URL-based or an option-based
-    # one; no internet-sourced hash will be in `hashes`.
-    if hashes:
-        hashes.check_against_path(from_path)
-    return File(from_path, None)
-
-
-def unpack_url(
-    link: Link,
-    location: str,
-    download: Downloader,
-    verbosity: int,
-    download_dir: Optional[str] = None,
-    hashes: Optional[Hashes] = None,
-) -> Optional[File]:
-    """Unpack link into location, downloading if required.
-
-    :param hashes: A Hashes object, one of whose embedded hashes must match,
-        or HashMismatch will be raised. If the Hashes is empty, no matches are
-        required, and unhashable types of requirements (like VCS ones, which
-        would ordinarily raise HashUnsupported) are allowed.
-    """
-    # non-editable vcs urls
-    if link.is_vcs:
-        unpack_vcs_link(link, location, verbosity=verbosity)
-        return None
-
-    assert not link.is_existing_dir()
-
-    # file urls
-    if link.is_file:
-        file = get_file_url(link, download_dir, hashes=hashes)
-
-    # http urls
-    else:
-        file = get_http_url(
-            link,
-            download,
-            download_dir,
-            hashes=hashes,
-        )
-
-    # unpack the archive to the build dir location. even when only downloading
-    # archives, they have to be unpacked to parse dependencies, except wheels
-    if not link.is_wheel:
-        unpack_file(file.path, location, file.content_type)
-
-    return file
-
-
-def _check_download_dir(
-    link: Link,
-    download_dir: str,
-    hashes: Optional[Hashes],
-    warn_on_hash_mismatch: bool = True,
-) -> Optional[str]:
-    """Check download_dir for previously downloaded file with correct hash
-    If a correct file is found return its path else None
-    """
-    download_path = os.path.join(download_dir, link.filename)
-
-    if not os.path.exists(download_path):
-        return None
-
-    # If already downloaded, does its hash match?
-    logger.info("File was already downloaded %s", download_path)
-    if hashes:
-        try:
-            hashes.check_against_path(download_path)
-        except HashMismatch:
-            if warn_on_hash_mismatch:
-                logger.warning(
-                    "Previously-downloaded file %s has bad hash. Re-downloading.",
-                    download_path,
-                )
-            os.unlink(download_path)
-            return None
-    return download_path
-
-
-class RequirementPreparer:
-    """Prepares a Requirement"""
-
-    def __init__(
-        self,
-        build_dir: str,
-        download_dir: Optional[str],
-        src_dir: str,
-        build_isolation: bool,
-        check_build_deps: bool,
-        build_tracker: BuildTracker,
-        session: PipSession,
-        progress_bar: str,
-        finder: PackageFinder,
-        require_hashes: bool,
-        use_user_site: bool,
-        lazy_wheel: bool,
-        verbosity: int,
-        legacy_resolver: bool,
-    ) -> None:
-        super().__init__()
-
-        self.src_dir = src_dir
-        self.build_dir = build_dir
-        self.build_tracker = build_tracker
-        self._session = session
-        self._download = Downloader(session, progress_bar)
-        self._batch_download = BatchDownloader(session, progress_bar)
-        self.finder = finder
-
-        # Where still-packed archives should be written to. If None, they are
-        # not saved, and are deleted immediately after unpacking.
-        self.download_dir = download_dir
-
-        # Is build isolation allowed?
-        self.build_isolation = build_isolation
-
-        # Should check build dependencies?
-        self.check_build_deps = check_build_deps
-
-        # Should hash-checking be required?
-        self.require_hashes = require_hashes
-
-        # Should install in user site-packages?
-        self.use_user_site = use_user_site
-
-        # Should wheels be downloaded lazily?
-        self.use_lazy_wheel = lazy_wheel
-
-        # How verbose should underlying tooling be?
-        self.verbosity = verbosity
-
-        # Are we using the legacy resolver?
-        self.legacy_resolver = legacy_resolver
-
-        # Memoized downloaded files, as mapping of url: path.
-        self._downloaded: Dict[str, str] = {}
-
-        # Previous "header" printed for a link-based InstallRequirement
-        self._previous_requirement_header = ("", "")
-
-    def _log_preparing_link(self, req: InstallRequirement) -> None:
-        """Provide context for the requirement being prepared."""
-        if req.link.is_file and not req.is_wheel_from_cache:
-            message = "Processing %s"
-            information = str(display_path(req.link.file_path))
-        else:
-            message = "Collecting %s"
-            information = redact_auth_from_requirement(req.req) if req.req else str(req)
-
-        # If we used req.req, inject requirement source if available (this
-        # would already be included if we used req directly)
-        if req.req and req.comes_from:
-            if isinstance(req.comes_from, str):
-                comes_from: Optional[str] = req.comes_from
-            else:
-                comes_from = req.comes_from.from_path()
-            if comes_from:
-                information += f" (from {comes_from})"
-
-        if (message, information) != self._previous_requirement_header:
-            self._previous_requirement_header = (message, information)
-            logger.info(message, information)
-
-        if req.is_wheel_from_cache:
-            with indent_log():
-                logger.info("Using cached %s", req.link.filename)
-
-    def _ensure_link_req_src_dir(
-        self, req: InstallRequirement, parallel_builds: bool
-    ) -> None:
-        """Ensure source_dir of a linked InstallRequirement."""
-        # Since source_dir is only set for editable requirements.
-        if req.link.is_wheel:
-            # We don't need to unpack wheels, so no need for a source
-            # directory.
-            return
-        assert req.source_dir is None
-        if req.link.is_existing_dir():
-            # build local directories in-tree
-            req.source_dir = req.link.file_path
-            return
-
-        # We always delete unpacked sdists after pip runs.
-        req.ensure_has_source_dir(
-            self.build_dir,
-            autodelete=True,
-            parallel_builds=parallel_builds,
-        )
-        req.ensure_pristine_source_checkout()
-
-    def _get_linked_req_hashes(self, req: InstallRequirement) -> Hashes:
-        # By the time this is called, the requirement's link should have
-        # been checked so we can tell what kind of requirements req is
-        # and raise some more informative errors than otherwise.
-        # (For example, we can raise VcsHashUnsupported for a VCS URL
-        # rather than HashMissing.)
-        if not self.require_hashes:
-            return req.hashes(trust_internet=True)
-
-        # We could check these first 2 conditions inside unpack_url
-        # and save repetition of conditions, but then we would
-        # report less-useful error messages for unhashable
-        # requirements, complaining that there's no hash provided.
-        if req.link.is_vcs:
-            raise VcsHashUnsupported()
-        if req.link.is_existing_dir():
-            raise DirectoryUrlHashUnsupported()
-
-        # Unpinned packages are asking for trouble when a new version
-        # is uploaded.  This isn't a security check, but it saves users
-        # a surprising hash mismatch in the future.
-        # file:/// URLs aren't pinnable, so don't complain about them
-        # not being pinned.
-        if not req.is_direct and not req.is_pinned:
-            raise HashUnpinned()
-
-        # If known-good hashes are missing for this requirement,
-        # shim it with a facade object that will provoke hash
-        # computation and then raise a HashMissing exception
-        # showing the user what the hash should be.
-        return req.hashes(trust_internet=False) or MissingHashes()
-
-    def _fetch_metadata_only(
-        self,
-        req: InstallRequirement,
-    ) -> Optional[BaseDistribution]:
-        if self.legacy_resolver:
-            logger.debug(
-                "Metadata-only fetching is not used in the legacy resolver",
-            )
-            return None
-        if self.require_hashes:
-            logger.debug(
-                "Metadata-only fetching is not used as hash checking is required",
-            )
-            return None
-        # Try PEP 658 metadata first, then fall back to lazy wheel if unavailable.
-        return self._fetch_metadata_using_link_data_attr(
-            req
-        ) or self._fetch_metadata_using_lazy_wheel(req.link)
-
-    def _fetch_metadata_using_link_data_attr(
-        self,
-        req: InstallRequirement,
-    ) -> Optional[BaseDistribution]:
-        """Fetch metadata from the data-dist-info-metadata attribute, if possible."""
-        # (1) Get the link to the metadata file, if provided by the backend.
-        metadata_link = req.link.metadata_link()
-        if metadata_link is None:
-            return None
-        assert req.req is not None
-        logger.verbose(
-            "Obtaining dependency information for %s from %s",
-            req.req,
-            metadata_link,
-        )
-        # (2) Download the contents of the METADATA file, separate from the dist itself.
-        metadata_file = get_http_url(
-            metadata_link,
-            self._download,
-            hashes=metadata_link.as_hashes(),
-        )
-        with open(metadata_file.path, "rb") as f:
-            metadata_contents = f.read()
-        # (3) Generate a dist just from those file contents.
-        metadata_dist = get_metadata_distribution(
-            metadata_contents,
-            req.link.filename,
-            req.req.name,
-        )
-        # (4) Ensure the Name: field from the METADATA file matches the name from the
-        #     install requirement.
-        #
-        #     NB: raw_name will fall back to the name from the install requirement if
-        #     the Name: field is not present, but it's noted in the raw_name docstring
-        #     that that should NEVER happen anyway.
-        if canonicalize_name(metadata_dist.raw_name) != canonicalize_name(req.req.name):
-            raise MetadataInconsistent(
-                req, "Name", req.req.name, metadata_dist.raw_name
-            )
-        return metadata_dist
-
-    def _fetch_metadata_using_lazy_wheel(
-        self,
-        link: Link,
-    ) -> Optional[BaseDistribution]:
-        """Fetch metadata using lazy wheel, if possible."""
-        # --use-feature=fast-deps must be provided.
-        if not self.use_lazy_wheel:
-            return None
-        if link.is_file or not link.is_wheel:
-            logger.debug(
-                "Lazy wheel is not used as %r does not point to a remote wheel",
-                link,
-            )
-            return None
-
-        wheel = Wheel(link.filename)
-        name = canonicalize_name(wheel.name)
-        logger.info(
-            "Obtaining dependency information from %s %s",
-            name,
-            wheel.version,
-        )
-        url = link.url.split("#", 1)[0]
-        try:
-            return dist_from_wheel_url(name, url, self._session)
-        except HTTPRangeRequestUnsupported:
-            logger.debug("%s does not support range requests", url)
-            return None
-
-    def _complete_partial_requirements(
-        self,
-        partially_downloaded_reqs: Iterable[InstallRequirement],
-        parallel_builds: bool = False,
-    ) -> None:
-        """Download any requirements which were only fetched by metadata."""
-        # Download to a temporary directory. These will be copied over as
-        # needed for downstream 'download', 'wheel', and 'install' commands.
-        temp_dir = TempDirectory(kind="unpack", globally_managed=True).path
-
-        # Map each link to the requirement that owns it. This allows us to set
-        # `req.local_file_path` on the appropriate requirement after passing
-        # all the links at once into BatchDownloader.
-        links_to_fully_download: Dict[Link, InstallRequirement] = {}
-        for req in partially_downloaded_reqs:
-            assert req.link
-            links_to_fully_download[req.link] = req
-
-        batch_download = self._batch_download(
-            links_to_fully_download.keys(),
-            temp_dir,
-        )
-        for link, (filepath, _) in batch_download:
-            logger.debug("Downloading link %s to %s", link, filepath)
-            req = links_to_fully_download[link]
-            # Record the downloaded file path so wheel reqs can extract a Distribution
-            # in .get_dist().
-            req.local_file_path = filepath
-            # Record that the file is downloaded so we don't do it again in
-            # _prepare_linked_requirement().
-            self._downloaded[req.link.url] = filepath
-
-            # If this is an sdist, we need to unpack it after downloading, but the
-            # .source_dir won't be set up until we are in _prepare_linked_requirement().
-            # Add the downloaded archive to the install requirement to unpack after
-            # preparing the source dir.
-            if not req.is_wheel:
-                req.needs_unpacked_archive(Path(filepath))
-
-        # This step is necessary to ensure all lazy wheels are processed
-        # successfully by the 'download', 'wheel', and 'install' commands.
-        for req in partially_downloaded_reqs:
-            self._prepare_linked_requirement(req, parallel_builds)
-
-    def prepare_linked_requirement(
-        self, req: InstallRequirement, parallel_builds: bool = False
-    ) -> BaseDistribution:
-        """Prepare a requirement to be obtained from req.link."""
-        assert req.link
-        self._log_preparing_link(req)
-        with indent_log():
-            # Check if the relevant file is already available
-            # in the download directory
-            file_path = None
-            if self.download_dir is not None and req.link.is_wheel:
-                hashes = self._get_linked_req_hashes(req)
-                file_path = _check_download_dir(
-                    req.link,
-                    self.download_dir,
-                    hashes,
-                    # When a locally built wheel has been found in cache, we don't warn
-                    # about re-downloading when the already downloaded wheel hash does
-                    # not match. This is because the hash must be checked against the
-                    # original link, not the cached link. It that case the already
-                    # downloaded file will be removed and re-fetched from cache (which
-                    # implies a hash check against the cache entry's origin.json).
-                    warn_on_hash_mismatch=not req.is_wheel_from_cache,
-                )
-
-            if file_path is not None:
-                # The file is already available, so mark it as downloaded
-                self._downloaded[req.link.url] = file_path
-            else:
-                # The file is not available, attempt to fetch only metadata
-                metadata_dist = self._fetch_metadata_only(req)
-                if metadata_dist is not None:
-                    req.needs_more_preparation = True
-                    return metadata_dist
-
-            # None of the optimizations worked, fully prepare the requirement
-            return self._prepare_linked_requirement(req, parallel_builds)
-
-    def prepare_linked_requirements_more(
-        self, reqs: Iterable[InstallRequirement], parallel_builds: bool = False
-    ) -> None:
-        """Prepare linked requirements more, if needed."""
-        reqs = [req for req in reqs if req.needs_more_preparation]
-        for req in reqs:
-            # Determine if any of these requirements were already downloaded.
-            if self.download_dir is not None and req.link.is_wheel:
-                hashes = self._get_linked_req_hashes(req)
-                file_path = _check_download_dir(req.link, self.download_dir, hashes)
-                if file_path is not None:
-                    self._downloaded[req.link.url] = file_path
-                    req.needs_more_preparation = False
-
-        # Prepare requirements we found were already downloaded for some
-        # reason. The other downloads will be completed separately.
-        partially_downloaded_reqs: List[InstallRequirement] = []
-        for req in reqs:
-            if req.needs_more_preparation:
-                partially_downloaded_reqs.append(req)
-            else:
-                self._prepare_linked_requirement(req, parallel_builds)
-
-        # TODO: separate this part out from RequirementPreparer when the v1
-        # resolver can be removed!
-        self._complete_partial_requirements(
-            partially_downloaded_reqs,
-            parallel_builds=parallel_builds,
-        )
-
-    def _prepare_linked_requirement(
-        self, req: InstallRequirement, parallel_builds: bool
-    ) -> BaseDistribution:
-        assert req.link
-        link = req.link
-
-        hashes = self._get_linked_req_hashes(req)
-
-        if hashes and req.is_wheel_from_cache:
-            assert req.download_info is not None
-            assert link.is_wheel
-            assert link.is_file
-            # We need to verify hashes, and we have found the requirement in the cache
-            # of locally built wheels.
-            if (
-                isinstance(req.download_info.info, ArchiveInfo)
-                and req.download_info.info.hashes
-                and hashes.has_one_of(req.download_info.info.hashes)
-            ):
-                # At this point we know the requirement was built from a hashable source
-                # artifact, and we verified that the cache entry's hash of the original
-                # artifact matches one of the hashes we expect. We don't verify hashes
-                # against the cached wheel, because the wheel is not the original.
-                hashes = None
-            else:
-                logger.warning(
-                    "The hashes of the source archive found in cache entry "
-                    "don't match, ignoring cached built wheel "
-                    "and re-downloading source."
-                )
-                req.link = req.cached_wheel_source_link
-                link = req.link
-
-        self._ensure_link_req_src_dir(req, parallel_builds)
-
-        if link.is_existing_dir():
-            local_file = None
-        elif link.url not in self._downloaded:
-            try:
-                local_file = unpack_url(
-                    link,
-                    req.source_dir,
-                    self._download,
-                    self.verbosity,
-                    self.download_dir,
-                    hashes,
-                )
-            except NetworkConnectionError as exc:
-                raise InstallationError(
-                    f"Could not install requirement {req} because of HTTP "
-                    f"error {exc} for URL {link}"
-                )
-        else:
-            file_path = self._downloaded[link.url]
-            if hashes:
-                hashes.check_against_path(file_path)
-            local_file = File(file_path, content_type=None)
-
-        # If download_info is set, we got it from the wheel cache.
-        if req.download_info is None:
-            # Editables don't go through this function (see
-            # prepare_editable_requirement).
-            assert not req.editable
-            req.download_info = direct_url_from_link(link, req.source_dir)
-            # Make sure we have a hash in download_info. If we got it as part of the
-            # URL, it will have been verified and we can rely on it. Otherwise we
-            # compute it from the downloaded file.
-            # FIXME: https://github.com/pypa/pip/issues/11943
-            if (
-                isinstance(req.download_info.info, ArchiveInfo)
-                and not req.download_info.info.hashes
-                and local_file
-            ):
-                hash = hash_file(local_file.path)[0].hexdigest()
-                # We populate info.hash for backward compatibility.
-                # This will automatically populate info.hashes.
-                req.download_info.info.hash = f"sha256={hash}"
-
-        # For use in later processing,
-        # preserve the file path on the requirement.
-        if local_file:
-            req.local_file_path = local_file.path
-
-        dist = _get_prepared_distribution(
-            req,
-            self.build_tracker,
-            self.finder,
-            self.build_isolation,
-            self.check_build_deps,
-        )
-        return dist
-
-    def save_linked_requirement(self, req: InstallRequirement) -> None:
-        assert self.download_dir is not None
-        assert req.link is not None
-        link = req.link
-        if link.is_vcs or (link.is_existing_dir() and req.editable):
-            # Make a .zip of the source_dir we already created.
-            req.archive(self.download_dir)
-            return
-
-        if link.is_existing_dir():
-            logger.debug(
-                "Not copying link to destination directory "
-                "since it is a directory: %s",
-                link,
-            )
-            return
-        if req.local_file_path is None:
-            # No distribution was downloaded for this requirement.
-            return
-
-        download_location = os.path.join(self.download_dir, link.filename)
-        if not os.path.exists(download_location):
-            shutil.copy(req.local_file_path, download_location)
-            download_path = display_path(download_location)
-            logger.info("Saved %s", download_path)
-
-    def prepare_editable_requirement(
-        self,
-        req: InstallRequirement,
-    ) -> BaseDistribution:
-        """Prepare an editable requirement."""
-        assert req.editable, "cannot prepare a non-editable req as editable"
-
-        logger.info("Obtaining %s", req)
-
-        with indent_log():
-            if self.require_hashes:
-                raise InstallationError(
-                    f"The editable requirement {req} cannot be installed when "
-                    "requiring hashes, because there is no single file to "
-                    "hash."
-                )
-            req.ensure_has_source_dir(self.src_dir)
-            req.update_editable()
-            assert req.source_dir
-            req.download_info = direct_url_for_editable(req.unpacked_source_directory)
-
-            dist = _get_prepared_distribution(
-                req,
-                self.build_tracker,
-                self.finder,
-                self.build_isolation,
-                self.check_build_deps,
-            )
-
-            req.check_if_exists(self.use_user_site)
-
-        return dist
-
-    def prepare_installed_requirement(
-        self,
-        req: InstallRequirement,
-        skip_reason: str,
-    ) -> BaseDistribution:
-        """Prepare an already-installed requirement."""
-        assert req.satisfied_by, "req should have been satisfied but isn't"
-        assert skip_reason is not None, (
-            "did not get skip reason skipped but req.satisfied_by "
-            f"is set to {req.satisfied_by}"
-        )
-        logger.info(
-            "Requirement %s: %s (%s)", skip_reason, req, req.satisfied_by.version
-        )
-        with indent_log():
-            if self.require_hashes:
-                logger.debug(
-                    "Since it is already installed, we are trusting this "
-                    "package without checking its hash. To ensure a "
-                    "completely repeatable environment, install into an "
-                    "empty virtualenv."
-                )
-            return InstalledDistribution(req).get_metadata_distribution()