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req_command.py

"""Contains the RequirementCommand base class.

This class is in a separate module so the commands that do not always
need PackageFinder capability don't unnecessarily import the
PackageFinder machinery and all its vendored dependencies, etc.
"""

import logging
from functools import partial
from optparse import Values
from typing import Any, List, Optional, Tuple

from pip._internal.cache import WheelCache
from pip._internal.cli import cmdoptions
from pip._internal.cli.index_command import IndexGroupCommand
from pip._internal.cli.index_command import SessionCommandMixin as SessionCommandMixin
from pip._internal.exceptions import CommandError, PreviousBuildDirError
from pip._internal.index.collector import LinkCollector
from pip._internal.index.package_finder import PackageFinder
from pip._internal.models.selection_prefs import SelectionPreferences
from pip._internal.models.target_python import TargetPython
from pip._internal.network.session import PipSession
from pip._internal.operations.build.build_tracker import BuildTracker
from pip._internal.operations.prepare import RequirementPreparer
from pip._internal.req.constructors import (
    install_req_from_editable,
    install_req_from_line,
    install_req_from_parsed_requirement,
    install_req_from_req_string,
)
from pip._internal.req.req_file import parse_requirements
from pip._internal.req.req_install import InstallRequirement
from pip._internal.resolution.base import BaseResolver
from pip._internal.utils.temp_dir import (
    TempDirectory,
    TempDirectoryTypeRegistry,
    tempdir_kinds,
)

logger = logging.getLogger(__name__)

KEEPABLE_TEMPDIR_TYPES = [
    tempdir_kinds.BUILD_ENV,
    tempdir_kinds.EPHEM_WHEEL_CACHE,
    tempdir_kinds.REQ_BUILD,
]

def with_cleanup(func: Any) -> Any:
    """Decorator for common logic related to managing temporary
    directories.
    """

def configure_tempdir_registry(registry: TempDirectoryTypeRegistry) -> None:
        for t in KEEPABLE_TEMPDIR_TYPES:
            registry.set_delete(t, False)

def wrapper(
        self: RequirementCommand, options: Values, args: List[Any]
    ) -> Optional[int]:
        assert self.tempdir_registry is not None
        if options.no_clean:
            configure_tempdir_registry(self.tempdir_registry)

try:
            return func(self, options, args)
        except PreviousBuildDirError:
            # This kind of conflict can occur when the user passes an explicit
            # build directory with a pre-existing folder. In that case we do
            # not want to accidentally remove it.
            configure_tempdir_registry(self.tempdir_registry)
            raise

return wrapper

class RequirementCommand(IndexGroupCommand):
    def __init__(self, *args: Any, **kw: Any) -> None:
        super().__init__(*args, **kw)

self.cmd_opts.add_option(cmdoptions.no_clean())

@staticmethod
    def determine_resolver_variant(options: Values) -> str:
        """Determines which resolver should be used, based on the given options."""
        if "legacy-resolver" in options.deprecated_features_enabled:
            return "legacy"

return "resolvelib"

@classmethod
    def make_requirement_preparer(
        cls,
        temp_build_dir: TempDirectory,
        options: Values,
        build_tracker: BuildTracker,
        session: PipSession,
        finder: PackageFinder,
        use_user_site: bool,
        download_dir: Optional[str] = None,
        verbosity: int = 0,
    ) -> RequirementPreparer:
        """
        Create a RequirementPreparer instance for the given parameters.
        """
        temp_build_dir_path = temp_build_dir.path
        assert temp_build_dir_path is not None
        legacy_resolver = False

resolver_variant = cls.determine_resolver_variant(options)
        if resolver_variant == "resolvelib":
            lazy_wheel = "fast-deps" in options.features_enabled
            if lazy_wheel:
                logger.warning(
                    "pip is using lazily downloaded wheels using HTTP "
                    "range requests to obtain dependency information. "
                    "This experimental feature is enabled through "
                    "--use-feature=fast-deps and it is not ready for "
                    "production."
                )
        else:
            legacy_resolver = True
            lazy_wheel = False
            if "fast-deps" in options.features_enabled:
                logger.warning(
                    "fast-deps has no effect when used with the legacy resolver."
                )

return RequirementPreparer(
            build_dir=temp_build_dir_path,
            src_dir=options.src_dir,
            download_dir=download_dir,
            build_isolation=options.build_isolation,
            check_build_deps=options.check_build_deps,
            build_tracker=build_tracker,
            session=session,
            progress_bar=options.progress_bar,
            finder=finder,
            require_hashes=options.require_hashes,
            use_user_site=use_user_site,
            lazy_wheel=lazy_wheel,
            verbosity=verbosity,
            legacy_resolver=legacy_resolver,
        )

@classmethod
    def make_resolver(
        cls,
        preparer: RequirementPreparer,
        finder: PackageFinder,
        options: Values,
        wheel_cache: Optional[WheelCache] = None,
        use_user_site: bool = False,
        ignore_installed: bool = True,
        ignore_requires_python: bool = False,
        force_reinstall: bool = False,
        upgrade_strategy: str = "to-satisfy-only",
        use_pep517: Optional[bool] = None,
        py_version_info: Optional[Tuple[int, ...]] = None,
    ) -> BaseResolver:
        """
        Create a Resolver instance for the given parameters.
        """
        make_install_req = partial(
            install_req_from_req_string,
            isolated=options.isolated_mode,
            use_pep517=use_pep517,
        )
        resolver_variant = cls.determine_resolver_variant(options)
        # The long import name and duplicated invocation is needed to convince
        # Mypy into correctly typechecking. Otherwise it would complain the
        # "Resolver" class being redefined.
        if resolver_variant == "resolvelib":
            import pip._internal.resolution.resolvelib.resolver

return pip._internal.resolution.resolvelib.resolver.Resolver(
                preparer=preparer,
                finder=finder,
                wheel_cache=wheel_cache,
                make_install_req=make_install_req,
                use_user_site=use_user_site,
                ignore_dependencies=options.ignore_dependencies,
                ignore_installed=ignore_installed,
                ignore_requires_python=ignore_requires_python,
                force_reinstall=force_reinstall,
                upgrade_strategy=upgrade_strategy,
                py_version_info=py_version_info,
            )
        import pip._internal.resolution.legacy.resolver

return pip._internal.resolution.legacy.resolver.Resolver(
            preparer=preparer,
            finder=finder,
            wheel_cache=wheel_cache,
            make_install_req=make_install_req,
            use_user_site=use_user_site,
            ignore_dependencies=options.ignore_dependencies,
            ignore_installed=ignore_installed,
            ignore_requires_python=ignore_requires_python,
            force_reinstall=force_reinstall,
            upgrade_strategy=upgrade_strategy,
            py_version_info=py_version_info,
        )

def get_requirements(
        self,
        args: List[str],
        options: Values,
        finder: PackageFinder,
        session: PipSession,
    ) -> List[InstallRequirement]:
        """
        Parse command-line arguments into the corresponding requirements.
        """
        requirements: List[InstallRequirement] = []
        for filename in options.constraints:
            for parsed_req in parse_requirements(
                filename,
                constraint=True,
                finder=finder,
                options=options,
                session=session,
            ):
                req_to_add = install_req_from_parsed_requirement(
                    parsed_req,
                    isolated=options.isolated_mode,
                    user_supplied=False,
                )
                requirements.append(req_to_add)

for req in args:
            req_to_add = install_req_from_line(
                req,
                comes_from=None,
                isolated=options.isolated_mode,
                use_pep517=options.use_pep517,
                user_supplied=True,
                config_settings=getattr(options, "config_settings", None),
            )
            requirements.append(req_to_add)

for req in options.editables:
            req_to_add = install_req_from_editable(
                req,
                user_supplied=True,
                isolated=options.isolated_mode,
                use_pep517=options.use_pep517,
                config_settings=getattr(options, "config_settings", None),
            )
            requirements.append(req_to_add)

# NOTE: options.require_hashes may be set if --require-hashes is True
        for filename in options.requirements:
            for parsed_req in parse_requirements(
                filename, finder=finder, options=options, session=session
            ):
                req_to_add = install_req_from_parsed_requirement(
                    parsed_req,
                    isolated=options.isolated_mode,
                    use_pep517=options.use_pep517,
                    user_supplied=True,
                    config_settings=(
                        parsed_req.options.get("config_settings")
                        if parsed_req.options
                        else None
                    ),
                )
                requirements.append(req_to_add)

# If any requirement has hash options, enable hash checking.
        if any(req.has_hash_options for req in requirements):
            options.require_hashes = True

if not (args or options.editables or options.requirements):
            opts = {"name": self.name}
            if options.find_links:
                raise CommandError(
                    "You must give at least one requirement to {name} "
                    '(maybe you meant "pip {name} {links}"?)'.format(
                        **dict(opts, links=" ".join(options.find_links))
                    )
                )
            else:
                raise CommandError(
                    "You must give at least one requirement to {name} "
                    '(see "pip help {name}")'.format(**opts)
                )

return requirements

@staticmethod
    def trace_basic_info(finder: PackageFinder) -> None:
        """
        Trace basic information about the provided objects.
        """
        # Display where finder is looking for packages
        search_scope = finder.search_scope
        locations = search_scope.get_formatted_locations()
        if locations:
            logger.info(locations)

def _build_package_finder(
        self,
        options: Values,
        session: PipSession,
        target_python: Optional[TargetPython] = None,
        ignore_requires_python: Optional[bool] = None,
    ) -> PackageFinder:
        """
        Create a package finder appropriate to this requirement command.

:param ignore_requires_python: Whether to ignore incompatible
            "Requires-Python" values in links. Defaults to False.
        """
        link_collector = LinkCollector.create(session, options=options)
        selection_prefs = SelectionPreferences(
            allow_yanked=True,
            format_control=options.format_control,
            allow_all_prereleases=options.pre,
            prefer_binary=options.prefer_binary,
            ignore_requires_python=ignore_requires_python,
        )

return PackageFinder.create(
            link_collector=link_collector,
            selection_prefs=selection_prefs,
            target_python=target_python,
        )

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2024-12-24 06:48:50
..	dir	-	root/root	drwxr-xr-x	2024-12-24 06:48:50
__pycache__	dir	-	root/root	drwxr-xr-x	2024-12-24 06:48:50
__init__.py	text/plain	132 B	root/root	-rw-r--r--	2024-12-18 10:22:20
autocompletion.py	text/plain	6.7 KB	root/root	-rw-r--r--	2024-12-18 10:22:20
base_command.py	text/plain	8.09 KB	root/root	-rw-r--r--	2024-12-18 10:22:20
cmdoptions.py	text/plain	29.4 KB	root/root	-rw-r--r--	2024-12-18 10:22:20
command_context.py	text/x-script.python	774 B	root/root	-rw-r--r--	2024-12-18 10:22:20
index_command.py	text/plain	5.5 KB	root/root	-rw-r--r--	2024-12-18 10:22:20
main.py	text/plain	2.75 KB	root/root	-rw-r--r--	2024-12-18 10:22:20
main_parser.py	text/plain	4.24 KB	root/root	-rw-r--r--	2024-12-18 10:22:20
parser.py	text/plain	10.57 KB	root/root	-rw-r--r--	2024-12-18 10:22:20
progress_bars.py	text/x-script.python	2.66 KB	root/root	-rw-r--r--	2024-12-18 10:22:20
req_command.py	text/plain	11.96 KB	root/root	-rw-r--r--	2024-12-18 10:22:20
spinners.py	text/x-script.python	5 KB	root/root	-rw-r--r--	2024-12-18 10:22:20
status_codes.py	text/plain	116 B	root/root	-rw-r--r--	2024-12-18 10:22:20