Merge pull request #63 from brenda-br/Fix-35HEADmaster

Restructure Project and Deployment

1 files changed, 0 insertions, 393 deletions

diff --git a/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/resolve.py b/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/resolve.py
deleted file mode 100644
index 33f572f..0000000
--- a/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/resolve.py
+++ /dev/null
@@ -1,393 +0,0 @@
-"""Dependency Resolution
-
-The dependency resolution in pip is performed as follows:
-
-for top-level requirements:
-    a. only one spec allowed per project, regardless of conflicts or not.
-       otherwise a "double requirement" exception is raised
-    b. they override sub-dependency requirements.
-for sub-dependencies
-    a. "first found, wins" (where the order is breadth first)
-"""
-
-import logging
-from collections import defaultdict
-from itertools import chain
-
-from pip._internal.exceptions import (
-    BestVersionAlreadyInstalled, DistributionNotFound, HashError, HashErrors,
-    UnsupportedPythonVersion,
-)
-from pip._internal.req.constructors import install_req_from_req_string
-from pip._internal.utils.logging import indent_log
-from pip._internal.utils.misc import dist_in_usersite, ensure_dir
-from pip._internal.utils.packaging import check_dist_requires_python
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional, DefaultDict, List, Set  # noqa: F401
-    from pip._internal.download import PipSession  # noqa: F401
-    from pip._internal.req.req_install import InstallRequirement  # noqa: F401
-    from pip._internal.index import PackageFinder  # noqa: F401
-    from pip._internal.req.req_set import RequirementSet  # noqa: F401
-    from pip._internal.operations.prepare import (  # noqa: F401
-        DistAbstraction, RequirementPreparer
-    )
-    from pip._internal.cache import WheelCache  # noqa: F401
-
-logger = logging.getLogger(__name__)
-
-
-class Resolver(object):
-    """Resolves which packages need to be installed/uninstalled to perform \
-    the requested operation without breaking the requirements of any package.
-    """
-
-    _allowed_strategies = {"eager", "only-if-needed", "to-satisfy-only"}
-
-    def __init__(
-        self,
-        preparer,  # type: RequirementPreparer
-        session,  # type: PipSession
-        finder,  # type: PackageFinder
-        wheel_cache,  # type: Optional[WheelCache]
-        use_user_site,  # type: bool
-        ignore_dependencies,  # type: bool
-        ignore_installed,  # type: bool
-        ignore_requires_python,  # type: bool
-        force_reinstall,  # type: bool
-        isolated,  # type: bool
-        upgrade_strategy,  # type: str
-        use_pep517=None  # type: Optional[bool]
-    ):
-        # type: (...) -> None
-        super(Resolver, self).__init__()
-        assert upgrade_strategy in self._allowed_strategies
-
-        self.preparer = preparer
-        self.finder = finder
-        self.session = session
-
-        # NOTE: This would eventually be replaced with a cache that can give
-        #       information about both sdist and wheels transparently.
-        self.wheel_cache = wheel_cache
-
-        # This is set in resolve
-        self.require_hashes = None  # type: Optional[bool]
-
-        self.upgrade_strategy = upgrade_strategy
-        self.force_reinstall = force_reinstall
-        self.isolated = isolated
-        self.ignore_dependencies = ignore_dependencies
-        self.ignore_installed = ignore_installed
-        self.ignore_requires_python = ignore_requires_python
-        self.use_user_site = use_user_site
-        self.use_pep517 = use_pep517
-
-        self._discovered_dependencies = \
-            defaultdict(list)  # type: DefaultDict[str, List]
-
-    def resolve(self, requirement_set):
-        # type: (RequirementSet) -> None
-        """Resolve what operations need to be done
-
-        As a side-effect of this method, the packages (and their dependencies)
-        are downloaded, unpacked and prepared for installation. This
-        preparation is done by ``pip.operations.prepare``.
-
-        Once PyPI has static dependency metadata available, it would be
-        possible to move the preparation to become a step separated from
-        dependency resolution.
-        """
-        # make the wheelhouse
-        if self.preparer.wheel_download_dir:
-            ensure_dir(self.preparer.wheel_download_dir)
-
-        # If any top-level requirement has a hash specified, enter
-        # hash-checking mode, which requires hashes from all.
-        root_reqs = (
-            requirement_set.unnamed_requirements +
-            list(requirement_set.requirements.values())
-        )
-        self.require_hashes = (
-            requirement_set.require_hashes or
-            any(req.has_hash_options for req in root_reqs)
-        )
-
-        # Display where finder is looking for packages
-        locations = self.finder.get_formatted_locations()
-        if locations:
-            logger.info(locations)
-
-        # Actually prepare the files, and collect any exceptions. Most hash
-        # exceptions cannot be checked ahead of time, because
-        # req.populate_link() needs to be called before we can make decisions
-        # based on link type.
-        discovered_reqs = []  # type: List[InstallRequirement]
-        hash_errors = HashErrors()
-        for req in chain(root_reqs, discovered_reqs):
-            try:
-                discovered_reqs.extend(
-                    self._resolve_one(requirement_set, req)
-                )
-            except HashError as exc:
-                exc.req = req
-                hash_errors.append(exc)
-
-        if hash_errors:
-            raise hash_errors
-
-    def _is_upgrade_allowed(self, req):
-        # type: (InstallRequirement) -> bool
-        if self.upgrade_strategy == "to-satisfy-only":
-            return False
-        elif self.upgrade_strategy == "eager":
-            return True
-        else:
-            assert self.upgrade_strategy == "only-if-needed"
-            return req.is_direct
-
-    def _set_req_to_reinstall(self, req):
-        # type: (InstallRequirement) -> None
-        """
-        Set a requirement to be installed.
-        """
-        # Don't uninstall the conflict if doing a user install and the
-        # conflict is not a user install.
-        if not self.use_user_site or dist_in_usersite(req.satisfied_by):
-            req.conflicts_with = req.satisfied_by
-        req.satisfied_by = None
-
-    # XXX: Stop passing requirement_set for options
-    def _check_skip_installed(self, req_to_install):
-        # type: (InstallRequirement) -> Optional[str]
-        """Check if req_to_install should be skipped.
-
-        This will check if the req is installed, and whether we should upgrade
-        or reinstall it, taking into account all the relevant user options.
-
-        After calling this req_to_install will only have satisfied_by set to
-        None if the req_to_install is to be upgraded/reinstalled etc. Any
-        other value will be a dist recording the current thing installed that
-        satisfies the requirement.
-
-        Note that for vcs urls and the like we can't assess skipping in this
-        routine - we simply identify that we need to pull the thing down,
-        then later on it is pulled down and introspected to assess upgrade/
-        reinstalls etc.
-
-        :return: A text reason for why it was skipped, or None.
-        """
-        if self.ignore_installed:
-            return None
-
-        req_to_install.check_if_exists(self.use_user_site)
-        if not req_to_install.satisfied_by:
-            return None
-
-        if self.force_reinstall:
-            self._set_req_to_reinstall(req_to_install)
-            return None
-
-        if not self._is_upgrade_allowed(req_to_install):
-            if self.upgrade_strategy == "only-if-needed":
-                return 'already satisfied, skipping upgrade'
-            return 'already satisfied'
-
-        # Check for the possibility of an upgrade.  For link-based
-        # requirements we have to pull the tree down and inspect to assess
-        # the version #, so it's handled way down.
-        if not req_to_install.link:
-            try:
-                self.finder.find_requirement(req_to_install, upgrade=True)
-            except BestVersionAlreadyInstalled:
-                # Then the best version is installed.
-                return 'already up-to-date'
-            except DistributionNotFound:
-                # No distribution found, so we squash the error.  It will
-                # be raised later when we re-try later to do the install.
-                # Why don't we just raise here?
-                pass
-
-        self._set_req_to_reinstall(req_to_install)
-        return None
-
-    def _get_abstract_dist_for(self, req):
-        # type: (InstallRequirement) -> DistAbstraction
-        """Takes a InstallRequirement and returns a single AbstractDist \
-        representing a prepared variant of the same.
-        """
-        assert self.require_hashes is not None, (
-            "require_hashes should have been set in Resolver.resolve()"
-        )
-
-        if req.editable:
-            return self.preparer.prepare_editable_requirement(
-                req, self.require_hashes, self.use_user_site, self.finder,
-            )
-
-        # satisfied_by is only evaluated by calling _check_skip_installed,
-        # so it must be None here.
-        assert req.satisfied_by is None
-        skip_reason = self._check_skip_installed(req)
-
-        if req.satisfied_by:
-            return self.preparer.prepare_installed_requirement(
-                req, self.require_hashes, skip_reason
-            )
-
-        upgrade_allowed = self._is_upgrade_allowed(req)
-        abstract_dist = self.preparer.prepare_linked_requirement(
-            req, self.session, self.finder, upgrade_allowed,
-            self.require_hashes
-        )
-
-        # NOTE
-        # The following portion is for determining if a certain package is
-        # going to be re-installed/upgraded or not and reporting to the user.
-        # This should probably get cleaned up in a future refactor.
-
-        # req.req is only avail after unpack for URL
-        # pkgs repeat check_if_exists to uninstall-on-upgrade
-        # (#14)
-        if not self.ignore_installed:
-            req.check_if_exists(self.use_user_site)
-
-        if req.satisfied_by:
-            should_modify = (
-                self.upgrade_strategy != "to-satisfy-only" or
-                self.force_reinstall or
-                self.ignore_installed or
-                req.link.scheme == 'file'
-            )
-            if should_modify:
-                self._set_req_to_reinstall(req)
-            else:
-                logger.info(
-                    'Requirement already satisfied (use --upgrade to upgrade):'
-                    ' %s', req,
-                )
-
-        return abstract_dist
-
-    def _resolve_one(
-        self,
-        requirement_set,  # type: RequirementSet
-        req_to_install  # type: InstallRequirement
-    ):
-        # type: (...) -> List[InstallRequirement]
-        """Prepare a single requirements file.
-
-        :return: A list of additional InstallRequirements to also install.
-        """
-        # Tell user what we are doing for this requirement:
-        # obtain (editable), skipping, processing (local url), collecting
-        # (remote url or package name)
-        if req_to_install.constraint or req_to_install.prepared:
-            return []
-
-        req_to_install.prepared = True
-
-        # register tmp src for cleanup in case something goes wrong
-        requirement_set.reqs_to_cleanup.append(req_to_install)
-
-        abstract_dist = self._get_abstract_dist_for(req_to_install)
-
-        # Parse and return dependencies
-        dist = abstract_dist.dist()
-        try:
-            check_dist_requires_python(dist)
-        except UnsupportedPythonVersion as err:
-            if self.ignore_requires_python:
-                logger.warning(err.args[0])
-            else:
-                raise
-
-        more_reqs = []  # type: List[InstallRequirement]
-
-        def add_req(subreq, extras_requested):
-            sub_install_req = install_req_from_req_string(
-                str(subreq),
-                req_to_install,
-                isolated=self.isolated,
-                wheel_cache=self.wheel_cache,
-                use_pep517=self.use_pep517
-            )
-            parent_req_name = req_to_install.name
-            to_scan_again, add_to_parent = requirement_set.add_requirement(
-                sub_install_req,
-                parent_req_name=parent_req_name,
-                extras_requested=extras_requested,
-            )
-            if parent_req_name and add_to_parent:
-                self._discovered_dependencies[parent_req_name].append(
-                    add_to_parent
-                )
-            more_reqs.extend(to_scan_again)
-
-        with indent_log():
-            # We add req_to_install before its dependencies, so that we
-            # can refer to it when adding dependencies.
-            if not requirement_set.has_requirement(req_to_install.name):
-                # 'unnamed' requirements will get added here
-                req_to_install.is_direct = True
-                requirement_set.add_requirement(
-                    req_to_install, parent_req_name=None,
-                )
-
-            if not self.ignore_dependencies:
-                if req_to_install.extras:
-                    logger.debug(
-                        "Installing extra requirements: %r",
-                        ','.join(req_to_install.extras),
-                    )
-                missing_requested = sorted(
-                    set(req_to_install.extras) - set(dist.extras)
-                )
-                for missing in missing_requested:
-                    logger.warning(
-                        '%s does not provide the extra \'%s\'',
-                        dist, missing
-                    )
-
-                available_requested = sorted(
-                    set(dist.extras) & set(req_to_install.extras)
-                )
-                for subreq in dist.requires(available_requested):
-                    add_req(subreq, extras_requested=available_requested)
-
-            if not req_to_install.editable and not req_to_install.satisfied_by:
-                # XXX: --no-install leads this to report 'Successfully
-                # downloaded' for only non-editable reqs, even though we took
-                # action on them.
-                requirement_set.successfully_downloaded.append(req_to_install)
-
-        return more_reqs
-
-    def get_installation_order(self, req_set):
-        # type: (RequirementSet) -> List[InstallRequirement]
-        """Create the installation order.
-
-        The installation order is topological - requirements are installed
-        before the requiring thing. We break cycles at an arbitrary point,
-        and make no other guarantees.
-        """
-        # The current implementation, which we may change at any point
-        # installs the user specified things in the order given, except when
-        # dependencies must come earlier to achieve topological order.
-        order = []
-        ordered_reqs = set()  # type: Set[InstallRequirement]
-
-        def schedule(req):
-            if req.satisfied_by or req in ordered_reqs:
-                return
-            if req.constraint:
-                return
-            ordered_reqs.add(req)
-            for dep in self._discovered_dependencies[req.name]:
-                schedule(dep)
-            order.append(req)
-
-        for install_req in req_set.requirements.values():
-            schedule(install_req)
-        return order