text: # The following comment should be removed at some point in the future.
  # mypy: strict-optional=False
  
  import logging
  import os
  import shutil
  import sys
  import uuid
  import zipfile
  from typing import Any, Dict, Iterable, List, Optional, Sequence, Union
  
  from pipenv.patched.notpip._vendor import pkg_resources, six
  from pipenv.patched.notpip._vendor.packaging.markers import Marker
  from pipenv.patched.notpip._vendor.packaging.requirements import Requirement
  from pipenv.patched.notpip._vendor.packaging.specifiers import SpecifierSet
  from pipenv.patched.notpip._vendor.packaging.utils import canonicalize_name
  from pipenv.patched.notpip._vendor.packaging.version import Version
  from pipenv.patched.notpip._vendor.packaging.version import parse as parse_version
  from pipenv.patched.notpip._vendor.pep517.wrappers import Pep517HookCaller
  from pipenv.patched.notpip._vendor.pkg_resources import Distribution
  
  from pipenv.patched.notpip._internal.build_env import BuildEnvironment, NoOpBuildEnvironment
  from pipenv.patched.notpip._internal.exceptions import InstallationError
  from pipenv.patched.notpip._internal.locations import get_scheme
  from pipenv.patched.notpip._internal.models.link import Link
  from pipenv.patched.notpip._internal.operations.build.metadata import generate_metadata
  from pipenv.patched.notpip._internal.operations.build.metadata_legacy import (
      generate_metadata as generate_metadata_legacy,
  )
  from pipenv.patched.notpip._internal.operations.install.editable_legacy import (
      install_editable as install_editable_legacy,
  )
  from pipenv.patched.notpip._internal.operations.install.legacy import LegacyInstallFailure
  from pipenv.patched.notpip._internal.operations.install.legacy import install as install_legacy
  from pipenv.patched.notpip._internal.operations.install.wheel import install_wheel
  from pipenv.patched.notpip._internal.pyproject import load_pyproject_toml, make_pyproject_path
  from pipenv.patched.notpip._internal.req.req_uninstall import UninstallPathSet
  from pipenv.patched.notpip._internal.utils.deprecation import deprecated
  from pipenv.patched.notpip._internal.utils.direct_url_helpers import direct_url_from_link
  from pipenv.patched.notpip._internal.utils.hashes import Hashes
  from pipenv.patched.notpip._internal.utils.logging import indent_log
  from pipenv.patched.notpip._internal.utils.misc import (
      ask_path_exists,
      backup_dir,
      display_path,
      dist_in_site_packages,
      dist_in_usersite,
      get_distribution,
      hide_url,
      redact_auth_from_url,
  )
  from pipenv.patched.notpip._internal.utils.packaging import get_metadata
  from pipenv.patched.notpip._internal.utils.temp_dir import TempDirectory, tempdir_kinds
  from pipenv.patched.notpip._internal.utils.virtualenv import running_under_virtualenv
  from pipenv.patched.notpip._internal.vcs import vcs
  
  logger = logging.getLogger(__name__)
  
  
  def _get_dist(metadata_directory: str) -> Distribution:
      """Return a pkg_resources.Distribution for the provided
      metadata directory.
      """
      dist_dir = metadata_directory.rstrip(os.sep)
  
      # Build a PathMetadata object, from path to metadata. :wink:
      base_dir, dist_dir_name = os.path.split(dist_dir)
      metadata = pkg_resources.PathMetadata(base_dir, dist_dir)
  
      # Determine the correct Distribution object type.
      if dist_dir.endswith(".egg-info"):
          dist_cls = pkg_resources.Distribution
          dist_name = os.path.splitext(dist_dir_name)[0]
      else:
          assert dist_dir.endswith(".dist-info")
          dist_cls = pkg_resources.DistInfoDistribution
          dist_name = os.path.splitext(dist_dir_name)[0].split("-")[0]
  
      return dist_cls(
          base_dir,
          project_name=dist_name,
          metadata=metadata,
      )
  
  
  class InstallRequirement:
      """
      Represents something that may be installed later on, may have information
      about where to fetch the relevant requirement and also contains logic for
      installing the said requirement.
      """
  
      def __init__(
          self,
          req: Optional[Requirement],
          comes_from: Optional[Union[str, "InstallRequirement"]],
          editable: bool = False,
          link: Optional[Link] = None,
          markers: Optional[Marker] = None,
          use_pep517: Optional[bool] = None,
          isolated: bool = False,
          install_options: Optional[List[str]] = None,
          global_options: Optional[List[str]] = None,
          hash_options: Optional[Dict[str, List[str]]] = None,
          constraint: bool = False,
          extras: Iterable[str] = (),
          user_supplied: bool = False,
      ) -> None:
          assert req is None or isinstance(req, Requirement), req
          self.req = req
          self.comes_from = comes_from
          self.constraint = constraint
          self.editable = editable
          self.legacy_install_reason: Optional[int] = None
  
          # source_dir is the local directory where the linked requirement is
          # located, or unpacked. In case unpacking is needed, creating and
          # populating source_dir is done by the RequirementPreparer. Note this
          # is not necessarily the directory where pyproject.toml or setup.py is
          # located - that one is obtained via unpacked_source_directory.
          self.source_dir: Optional[str] = None
          if self.editable:
              assert link
              if link.is_file:
                  self.source_dir = os.path.normpath(
                      os.path.abspath(link.file_path)
                  )
  
          if link is None and req and req.url:
              # PEP 508 URL requirement
              link = Link(req.url)
          self.link = self.original_link = link
          self.original_link_is_in_wheel_cache = False
  
          # Path to any downloaded or already-existing package.
          self.local_file_path: Optional[str] = None
          if self.link and self.link.is_file:
              self.local_file_path = self.link.file_path
  
          if extras:
              self.extras = extras
          elif req:
              self.extras = {
                  pkg_resources.safe_extra(extra) for extra in req.extras
              }
          else:
              self.extras = set()
          if markers is None and req:
              markers = req.marker
          self.markers = markers
  
          # This holds the pkg_resources.Distribution object if this requirement
          # is already available:
          self.satisfied_by: Optional[Distribution] = None
          # Whether the installation process should try to uninstall an existing
          # distribution before installing this requirement.
          self.should_reinstall = False
          # Temporary build location
          self._temp_build_dir: Optional[TempDirectory] = None
          # Set to True after successful installation
          self.install_succeeded: Optional[bool] = None
          # Supplied options
          self.install_options = install_options if install_options else []
          self.global_options = global_options if global_options else []
          self.hash_options = hash_options if hash_options else {}
          # Set to True after successful preparation of this requirement
          self.prepared = False
          # User supplied requirement are explicitly requested for installation
          # by the user via CLI arguments or requirements files, as opposed to,
          # e.g. dependencies, extras or constraints.
          self.user_supplied = user_supplied
  
          self.isolated = isolated
          self.build_env: BuildEnvironment = NoOpBuildEnvironment()
  
          # For PEP 517, the directory where we request the project metadata
          # gets stored. We need this to pass to build_wheel, so the backend
          # can ensure that the wheel matches the metadata (see the PEP for
          # details).
          self.metadata_directory: Optional[str] = None
  
          # The static build requirements (from pyproject.toml)
          self.pyproject_requires: Optional[List[str]] = None
  
          # Build requirements that we will check are available
          self.requirements_to_check: List[str] = []
  
          # The PEP 517 backend we should use to build the project
          self.pep517_backend: Optional[Pep517HookCaller] = None
  
          # Are we using PEP 517 for this requirement?
          # After pyproject.toml has been loaded, the only valid values are True
          # and False. Before loading, None is valid (meaning "use the default").
          # Setting an explicit value before loading pyproject.toml is supported,
          # but after loading this flag should be treated as read only.
          self.use_pep517 = use_pep517
  
          # This requirement needs more preparation before it can be built
          self.needs_more_preparation = False
  
      def __str__(self) -> str:
          if self.req:
              s = str(self.req)
              if self.link:
                  s += ' from {}'.format(redact_auth_from_url(self.link.url))
          elif self.link:
              s = redact_auth_from_url(self.link.url)
          else:
              s = '<InstallRequirement>'
          if self.satisfied_by is not None:
              s += ' in {}'.format(display_path(self.satisfied_by.location))
          if self.comes_from:
              if isinstance(self.comes_from, str):
                  comes_from: Optional[str] = self.comes_from
              else:
                  comes_from = self.comes_from.from_path()
              if comes_from:
                  s += f' (from {comes_from})'
          return s
  
      def __repr__(self) -> str:
          return '<{} object: {} editable={!r}>'.format(
              self.__class__.__name__, str(self), self.editable)
  
      def format_debug(self) -> str:
          """An un-tested helper for getting state, for debugging.
          """
          attributes = vars(self)
          names = sorted(attributes)
  
          state = (
              "{}={!r}".format(attr, attributes[attr]) for attr in sorted(names)
          )
          return '<{name} object: {{{state}}}>'.format(
              name=self.__class__.__name__,
              state=", ".join(state),
          )
  
      # Things that are valid for all kinds of requirements?
      @property
      def name(self) -> Optional[str]:
          if self.req is None:
              return None
          return pkg_resources.safe_name(self.req.name)
  
      @property
      def specifier(self) -> SpecifierSet:
          return self.req.specifier
  
      @property
      def is_pinned(self) -> bool:
          """Return whether I am pinned to an exact version.
  
          For example, some-package==1.2 is pinned; some-package>1.2 is not.
          """
          specifiers = self.specifier
          return (len(specifiers) == 1 and
                  next(iter(specifiers)).operator in {'==', '==='})
  
      def match_markers(self, extras_requested: Optional[Iterable[str]] = None) -> bool:
          if not extras_requested:
              # Provide an extra to safely evaluate the markers
              # without matching any extra
              extras_requested = ('',)
          if self.markers is not None:
              return any(
                  self.markers.evaluate({'extra': extra})
                  for extra in extras_requested)
          else:
              return True
  
      @property
      def has_hash_options(self) -> bool:
          """Return whether any known-good hashes are specified as options.
  
          These activate --require-hashes mode; hashes specified as part of a
          URL do not.
  
          """
          return bool(self.hash_options)
  
      def hashes(self, trust_internet: bool = True) -> Hashes:
          """Return a hash-comparer that considers my option- and URL-based
          hashes to be known-good.
  
          Hashes in URLs--ones embedded in the requirements file, not ones
          downloaded from an index server--are almost peers with ones from
          flags. They satisfy --require-hashes (whether it was implicitly or
          explicitly activated) but do not activate it. md5 and sha224 are not
          allowed in flags, which should nudge people toward good algos. We
          always OR all hashes together, even ones from URLs.
  
          :param trust_internet: Whether to trust URL-based (#md5=...) hashes
              downloaded from the internet, as by populate_link()
  
          """
          good_hashes = self.hash_options.copy()
          link = self.link if trust_internet else self.original_link
          if link and link.hash:
              good_hashes.setdefault(link.hash_name, []).append(link.hash)
          return Hashes(good_hashes)
  
      def from_path(self) -> Optional[str]:
          """Format a nice indicator to show where this "comes from"
          """
          if self.req is None:
              return None
          s = str(self.req)
          if self.comes_from:
              if isinstance(self.comes_from, str):
                  comes_from = self.comes_from
              else:
                  comes_from = self.comes_from.from_path()
              if comes_from:
                  s += '->' + comes_from
          return s
  
      def ensure_build_location(
          self, build_dir: str, autodelete: bool, parallel_builds: bool
      ) -> str:
          assert build_dir is not None
          if self._temp_build_dir is not None:
              assert self._temp_build_dir.path
              return self._temp_build_dir.path
          if self.req is None:
              # Some systems have /tmp as a symlink which confuses custom
              # builds (such as numpy). Thus, we ensure that the real path
              # is returned.
              self._temp_build_dir = TempDirectory(
                  kind=tempdir_kinds.REQ_BUILD, globally_managed=True
              )
  
              return self._temp_build_dir.path
  
          # This is the only remaining place where we manually determine the path
          # for the temporary directory. It is only needed for editables where
          # it is the value of the --src option.
  
          # When parallel builds are enabled, add a UUID to the build directory
          # name so multiple builds do not interfere with each other.
          dir_name: str = canonicalize_name(self.name)
          if parallel_builds:
              dir_name = f"{dir_name}_{uuid.uuid4().hex}"
  
          # FIXME: Is there a better place to create the build_dir? (hg and bzr
          # need this)
          if not os.path.exists(build_dir):
              logger.debug('Creating directory %s', build_dir)
              os.makedirs(build_dir)
          actual_build_dir = os.path.join(build_dir, dir_name)
          # `None` indicates that we respect the globally-configured deletion
          # settings, which is what we actually want when auto-deleting.
          delete_arg = None if autodelete else False
          return TempDirectory(
              path=actual_build_dir,
              delete=delete_arg,
              kind=tempdir_kinds.REQ_BUILD,
              globally_managed=True,
          ).path
  
      def _set_requirement(self) -> None:
          """Set requirement after generating metadata.
          """
          assert self.req is None
          assert self.metadata is not None
          assert self.source_dir is not None
  
          # Construct a Requirement object from the generated metadata
          if isinstance(parse_version(self.metadata["Version"]), Version):
              op = "=="
          else:
              op = "==="
  
          self.req = Requirement(
              "".join([
                  self.metadata["Name"],
                  op,
                  self.metadata["Version"],
              ])
          )
  
      def warn_on_mismatching_name(self) -> None:
          metadata_name = canonicalize_name(self.metadata["Name"])
          if canonicalize_name(self.req.name) == metadata_name:
              # Everything is fine.
              return
  
          # If we're here, there's a mismatch. Log a warning about it.
          logger.warning(
              'Generating metadata for package %s '
              'produced metadata for project name %s. Fix your '
              '#egg=%s fragments.',
              self.name, metadata_name, self.name
          )
          self.req = Requirement(metadata_name)
  
      def check_if_exists(self, use_user_site: bool) -> None:
          """Find an installed distribution that satisfies or conflicts
          with this requirement, and set self.satisfied_by or
          self.should_reinstall appropriately.
          """
          if self.req is None:
              return
          existing_dist = get_distribution(self.req.name)
          if not existing_dist:
              return
  
          # pkg_resouces may contain a different copy of packaging.version from
          # pip in if the downstream distributor does a poor job debundling pip.
          # We avoid existing_dist.parsed_version and let SpecifierSet.contains
          # parses the version instead.
          existing_version = existing_dist.version
          version_compatible = (
              existing_version is not None and
              self.req.specifier.contains(existing_version, prereleases=True)
          )
          if not version_compatible:
              self.satisfied_by = None
              if use_user_site:
                  if dist_in_usersite(existing_dist):
                      self.should_reinstall = True
                  elif (running_under_virtualenv() and
                          dist_in_site_packages(existing_dist)):
                      raise InstallationError(
                          "Will not install to the user site because it will "
                          "lack sys.path precedence to {} in {}".format(
                              existing_dist.project_name, existing_dist.location)
                      )
              else:
                  self.should_reinstall = True
          else:
              if self.editable:
                  self.should_reinstall = True
                  # when installing editables, nothing pre-existing should ever
                  # satisfy
                  self.satisfied_by = None
              else:
                  self.satisfied_by = existing_dist
  
      # Things valid for wheels
      @property
      def is_wheel(self) -> bool:
          if not self.link:
              return False
          return self.link.is_wheel
  
      # Things valid for sdists
      @property
      def unpacked_source_directory(self) -> str:
          return os.path.join(
              self.source_dir,
              self.link and self.link.subdirectory_fragment or '')
  
      @property
      def setup_py_path(self) -> str:
          assert self.source_dir, f"No source dir for {self}"
          setup_py = os.path.join(self.unpacked_source_directory, 'setup.py')
  
          return setup_py
  
      @property
      def pyproject_toml_path(self) -> str:
          assert self.source_dir, f"No source dir for {self}"
          return make_pyproject_path(self.unpacked_source_directory)
  
      def load_pyproject_toml(self) -> None:
          """Load the pyproject.toml file.
  
          After calling this routine, all of the attributes related to PEP 517
          processing for this requirement have been set. In particular, the
          use_pep517 attribute can be used to determine whether we should
          follow the PEP 517 or legacy (setup.py) code path.
          """
          pyproject_toml_data = load_pyproject_toml(
              self.use_pep517,
              self.pyproject_toml_path,
              self.setup_py_path,
              str(self)
          )
  
          if pyproject_toml_data is None:
              self.use_pep517 = False
              return
  
          self.use_pep517 = True
          requires, backend, check, backend_path = pyproject_toml_data
          self.requirements_to_check = check
          self.pyproject_requires = requires
          self.pep517_backend = Pep517HookCaller(
              self.unpacked_source_directory, backend, backend_path=backend_path,
              python_executable=os.getenv('PIP_PYTHON_PATH', sys.executable)
          )
  
      def _generate_metadata(self) -> str:
          """Invokes metadata generator functions, with the required arguments.
          """
          if not self.use_pep517:
              assert self.unpacked_source_directory
  
              if not os.path.exists(self.setup_py_path):
                  raise InstallationError(
                      f'File "setup.py" not found for legacy project {self}.'
                  )
  
              return generate_metadata_legacy(
                  build_env=self.build_env,
                  setup_py_path=self.setup_py_path,
                  source_dir=self.unpacked_source_directory,
                  isolated=self.isolated,
                  details=self.name or f"from {self.link}"
              )
  
          assert self.pep517_backend is not None
  
          return generate_metadata(
              build_env=self.build_env,
              backend=self.pep517_backend,
          )
  
      def prepare_metadata(self) -> None:
          """Ensure that project metadata is available.
  
          Under PEP 517, call the backend hook to prepare the metadata.
          Under legacy processing, call setup.py egg-info.
          """
          assert self.source_dir
  
          with indent_log():
              self.metadata_directory = self._generate_metadata()
  
          # Act on the newly generated metadata, based on the name and version.
          if not self.name:
              self._set_requirement()
          else:
              self.warn_on_mismatching_name()
  
          self.assert_source_matches_version()
  
      @property
      def metadata(self) -> Any:
          if not hasattr(self, '_metadata'):
              self._metadata = get_metadata(self.get_dist())
  
          return self._metadata
  
      def get_dist(self) -> Distribution:
          return _get_dist(self.metadata_directory)
  
      def assert_source_matches_version(self) -> None:
          assert self.source_dir
          version = self.metadata['version']
          if self.req.specifier and version not in self.req.specifier:
              logger.warning(
                  'Requested %s, but installing version %s',
                  self,
                  version,
              )
          else:
              logger.debug(
                  'Source in %s has version %s, which satisfies requirement %s',
                  display_path(self.source_dir),
                  version,
                  self,
              )
  
      # For both source distributions and editables
      def ensure_has_source_dir(
          self,
          parent_dir: str,
          autodelete: bool = False,
          parallel_builds: bool = False,
      ) -> None:
          """Ensure that a source_dir is set.
  
          This will create a temporary build dir if the name of the requirement
          isn't known yet.
  
          :param parent_dir: The ideal pip parent_dir for the source_dir.
              Generally src_dir for editables and build_dir for sdists.
          :return: self.source_dir
          """
          if self.source_dir is None:
              self.source_dir = self.ensure_build_location(
                  parent_dir,
                  autodelete=autodelete,
                  parallel_builds=parallel_builds,
              )
  
      # For editable installations
      def update_editable(self) -> None:
          if not self.link:
              logger.debug(
                  "Cannot update repository at %s; repository location is "
                  "unknown",
                  self.source_dir,
              )
              return
          assert self.editable
          assert self.source_dir
          if self.link.scheme == 'file':
              # Static paths don't get updated
              return
          vcs_backend = vcs.get_backend_for_scheme(self.link.scheme)
          # Editable requirements are validated in Requirement constructors.
          # So here, if it's neither a path nor a valid VCS URL, it's a bug.
          assert vcs_backend, f"Unsupported VCS URL {self.link.url}"
          hidden_url = hide_url(self.link.url)
          vcs_backend.obtain(self.source_dir, url=hidden_url)
  
      # Top-level Actions
      def uninstall(
          self, auto_confirm: bool = False, verbose: bool = False
      ) -> Optional[UninstallPathSet]:
          """
          Uninstall the distribution currently satisfying this requirement.
  
          Prompts before removing or modifying files unless
          ``auto_confirm`` is True.
  
          Refuses to delete or modify files outside of ``sys.prefix`` -
          thus uninstallation within a virtual environment can only
          modify that virtual environment, even if the virtualenv is
          linked to global site-packages.
  
          """
          assert self.req
          dist = get_distribution(self.req.name)
          if not dist:
              logger.warning("Skipping %s as it is not installed.", self.name)
              return None
          logger.info('Found existing installation: %s', dist)
  
          uninstalled_pathset = UninstallPathSet.from_dist(dist)
          uninstalled_pathset.remove(auto_confirm, verbose)
          return uninstalled_pathset
  
      def _get_archive_name(self, path: str, parentdir: str, rootdir: str) -> str:
  
          def _clean_zip_name(name: str, prefix: str) -> str:
              assert name.startswith(prefix + os.path.sep), (
                  f"name {name!r} doesn't start with prefix {prefix!r}"
              )
              name = name[len(prefix) + 1:]
              name = name.replace(os.path.sep, '/')
              return name
  
          path = os.path.join(parentdir, path)
          name = _clean_zip_name(path, rootdir)
          return self.name + '/' + name
  
      def archive(self, build_dir: Optional[str]) -> None:
          """Saves archive to provided build_dir.
  
          Used for saving downloaded VCS requirements as part of `pip download`.
          """
          assert self.source_dir
          if build_dir is None:
              return
  
          create_archive = True
          archive_name = '{}-{}.zip'.format(self.name, self.metadata["version"])
          archive_path = os.path.join(build_dir, archive_name)
  
          if os.path.exists(archive_path):
              response = ask_path_exists(
                  'The file {} exists. (i)gnore, (w)ipe, '
                  '(b)ackup, (a)bort '.format(
                      display_path(archive_path)),
                  ('i', 'w', 'b', 'a'))
              if response == 'i':
                  create_archive = False
              elif response == 'w':
                  logger.warning('Deleting %s', display_path(archive_path))
                  os.remove(archive_path)
              elif response == 'b':
                  dest_file = backup_dir(archive_path)
                  logger.warning(
                      'Backing up %s to %s',
                      display_path(archive_path),
                      display_path(dest_file),
                  )
                  shutil.move(archive_path, dest_file)
              elif response == 'a':
                  sys.exit(-1)
  
          if not create_archive:
              return
  
          zip_output = zipfile.ZipFile(
              archive_path, 'w', zipfile.ZIP_DEFLATED, allowZip64=True,
          )
          with zip_output:
              dir = os.path.normcase(
                  os.path.abspath(self.unpacked_source_directory)
              )
              for dirpath, dirnames, filenames in os.walk(dir):
                  for dirname in dirnames:
                      dir_arcname = self._get_archive_name(
                          dirname, parentdir=dirpath, rootdir=dir,
                      )
                      zipdir = zipfile.ZipInfo(dir_arcname + '/')
                      zipdir.external_attr = 0x1ED << 16  # 0o755
                      zip_output.writestr(zipdir, '')
                  for filename in filenames:
                      file_arcname = self._get_archive_name(
                          filename, parentdir=dirpath, rootdir=dir,
                      )
                      filename = os.path.join(dirpath, filename)
                      zip_output.write(filename, file_arcname)
  
          logger.info('Saved %s', display_path(archive_path))
  
      def install(
          self,
          install_options: List[str],
          global_options: Optional[Sequence[str]] = None,
          root: Optional[str] = None,
          home: Optional[str] = None,
          prefix: Optional[str] = None,
          warn_script_location: bool = True,
          use_user_site: bool = False,
          pycompile: bool = True
      ) -> None:
          scheme = get_scheme(
              self.name,
              user=use_user_site,
              home=home,
              root=root,
              isolated=self.isolated,
              prefix=prefix,
          )
  
          global_options = global_options if global_options is not None else []
          if self.editable:
              install_editable_legacy(
                  install_options,
                  global_options,
                  prefix=prefix,
                  home=home,
                  use_user_site=use_user_site,
                  name=self.name,
                  setup_py_path=self.setup_py_path,
                  isolated=self.isolated,
                  build_env=self.build_env,
                  unpacked_source_directory=self.unpacked_source_directory,
              )
              self.install_succeeded = True
              return
  
          if self.is_wheel:
              assert self.local_file_path
              direct_url = None
              if self.original_link:
                  direct_url = direct_url_from_link(
                      self.original_link,
                      self.source_dir,
                      self.original_link_is_in_wheel_cache,
                  )
              install_wheel(
                  self.name,
                  self.local_file_path,
                  scheme=scheme,
                  req_description=str(self.req),
                  pycompile=pycompile,
                  warn_script_location=warn_script_location,
                  direct_url=direct_url,
                  requested=self.user_supplied,
              )
              self.install_succeeded = True
              return
  
          # TODO: Why don't we do this for editable installs?
  
          # Extend the list of global and install options passed on to
          # the setup.py call with the ones from the requirements file.
          # Options specified in requirements file override those
          # specified on the command line, since the last option given
          # to setup.py is the one that is used.
          global_options = list(global_options) + self.global_options
          install_options = list(install_options) + self.install_options
  
          try:
              success = install_legacy(
                  install_options=install_options,
                  global_options=global_options,
                  root=root,
                  home=home,
                  prefix=prefix,
                  use_user_site=use_user_site,
                  pycompile=pycompile,
                  scheme=scheme,
                  setup_py_path=self.setup_py_path,
                  isolated=self.isolated,
                  req_name=self.name,
                  build_env=self.build_env,
                  unpacked_source_directory=self.unpacked_source_directory,
                  req_description=str(self.req),
              )
          except LegacyInstallFailure as exc:
              self.install_succeeded = False
              six.reraise(*exc.parent)
          except Exception:
              self.install_succeeded = True
              raise
  
          self.install_succeeded = success
  
          if success and self.legacy_install_reason == 8368:
              deprecated(
                  reason=(
                      "{} was installed using the legacy 'setup.py install' "
                      "method, because a wheel could not be built for it.".
                      format(self.name)
                  ),
                  replacement="to fix the wheel build issue reported above",
                  gone_in=None,
                  issue=8368,
              )
  
  
  def check_invalid_constraint_type(req: InstallRequirement) -> str:
  
      # Check for unsupported forms
      problem = ""
      if not req.name:
          problem = "Unnamed requirements are not allowed as constraints"
      elif req.editable:
          problem = "Editable requirements are not allowed as constraints"
      elif req.extras:
          problem = "Constraints cannot have extras"
  
      if problem:
          deprecated(
              reason=(
                  "Constraints are only allowed to take the form of a package "
                  "name and a version specifier. Other forms were originally "
                  "permitted as an accident of the implementation, but were "
                  "undocumented. The new implementation of the resolver no "
                  "longer supports these forms."
              ),
              replacement="replacing the constraint with a requirement",
              # No plan yet for when the new resolver becomes default
              gone_in=None,
              issue=8210,
          )
  
      return problem
  