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📁 ..	-	2026-03-21 15:53
📄 __init__.py from pip._internal.distributions.base import AbstractDistribution from pip._internal.distributions.sdist import SourceDistribution from pip._internal.distributions.wheel import WheelDistribution from pip._internal.req.req_install import InstallRequirement def make_distribution_for_install_requirement( install_req: InstallRequirement, ) -> AbstractDistribution: """Returns a Distribution for the given InstallRequirement""" # Editable requirements will always be source distributions. They use the # legacy logic until we create a modern standard for them. if install_req.editable: return SourceDistribution(install_req) # If it's a wheel, it's a WheelDistribution if install_req.is_wheel: return WheelDistribution(install_req) # Otherwise, a SourceDistribution return SourceDistribution(install_req)	858 B	2026-01-07 23:39
📁 __pycache__	-	2026-03-21 15:53
📄 base.py import abc from pip._internal.index.package_finder import PackageFinder from pip._internal.metadata.base import BaseDistribution from pip._internal.req import InstallRequirement class AbstractDistribution(metaclass=abc.ABCMeta): """A base class for handling installable artifacts. The requirements for anything installable are as follows: - we must be able to determine the requirement name (or we can't correctly handle the non-upgrade case). - for packages with setup requirements, we must also be able to determine their requirements without installing additional packages (for the same reason as run-time dependencies) - we must be able to create a Distribution object exposing the above metadata. """ def __init__(self, req: InstallRequirement) -> None: super().__init__() self.req = req @abc.abstractmethod def get_metadata_distribution(self) -> BaseDistribution: raise NotImplementedError() @abc.abstractmethod def prepare_distribution_metadata( self, finder: PackageFinder, build_isolation: bool ) -> None: raise NotImplementedError()	1.14 KB	2026-01-07 23:39
📄 installed.py from pip._internal.distributions.base import AbstractDistribution from pip._internal.index.package_finder import PackageFinder from pip._internal.metadata import BaseDistribution class InstalledDistribution(AbstractDistribution): """Represents an installed package. This does not need any preparation as the required information has already been computed. """ def get_metadata_distribution(self) -> BaseDistribution: from pip._internal.metadata.pkg_resources import Distribution as _Dist assert self.req.satisfied_by is not None, "not actually installed" return _Dist(self.req.satisfied_by) def prepare_distribution_metadata( self, finder: PackageFinder, build_isolation: bool ) -> None: pass	767 B	2026-01-07 23:39
📄 sdist.py import logging from typing import Iterable, Set, Tuple from pip._internal.build_env import BuildEnvironment from pip._internal.distributions.base import AbstractDistribution from pip._internal.exceptions import InstallationError from pip._internal.index.package_finder import PackageFinder from pip._internal.metadata import BaseDistribution from pip._internal.utils.subprocess import runner_with_spinner_message logger = logging.getLogger(__name__) class SourceDistribution(AbstractDistribution): """Represents a source distribution. The preparation step for these needs metadata for the packages to be generated, either using PEP 517 or using the legacy `setup.py egg_info`. """ def get_metadata_distribution(self) -> BaseDistribution: from pip._internal.metadata.pkg_resources import Distribution as _Dist return _Dist(self.req.get_dist()) def prepare_distribution_metadata( self, finder: PackageFinder, build_isolation: bool ) -> None: # Load pyproject.toml, to determine whether PEP 517 is to be used self.req.load_pyproject_toml() # Set up the build isolation, if this requirement should be isolated should_isolate = self.req.use_pep517 and build_isolation if should_isolate: # Setup an isolated environment and install the build backend static # requirements in it. self._prepare_build_backend(finder) # Check that if the requirement is editable, it either supports PEP 660 or # has a setup.py or a setup.cfg. This cannot be done earlier because we need # to setup the build backend to verify it supports build_editable, nor can # it be done later, because we want to avoid installing build requirements # needlessly. Doing it here also works around setuptools generating # UNKNOWN.egg-info when running get_requires_for_build_wheel on a directory # without setup.py nor setup.cfg. self.req.isolated_editable_sanity_check() # Install the dynamic build requirements. self._install_build_reqs(finder) self.req.prepare_metadata() def _prepare_build_backend(self, finder: PackageFinder) -> None: # Isolate in a BuildEnvironment and install the build-time # requirements. pyproject_requires = self.req.pyproject_requires assert pyproject_requires is not None self.req.build_env = BuildEnvironment() self.req.build_env.install_requirements( finder, pyproject_requires, "overlay", "Installing build dependencies" ) conflicting, missing = self.req.build_env.check_requirements( self.req.requirements_to_check ) if conflicting: self._raise_conflicts("PEP 517/518 supported requirements", conflicting) if missing: logger.warning( "Missing build requirements in pyproject.toml for %s.", self.req, ) logger.warning( "The project does not specify a build backend, and " "pip cannot fall back to setuptools without %s.", " and ".join(map(repr, sorted(missing))), ) def _get_build_requires_wheel(self) -> Iterable[str]: with self.req.build_env: runner = runner_with_spinner_message("Getting requirements to build wheel") backend = self.req.pep517_backend assert backend is not None with backend.subprocess_runner(runner): return backend.get_requires_for_build_wheel() def _get_build_requires_editable(self) -> Iterable[str]: with self.req.build_env: runner = runner_with_spinner_message( "Getting requirements to build editable" ) backend = self.req.pep517_backend assert backend is not None with backend.subprocess_runner(runner): return backend.get_requires_for_build_editable() def _install_build_reqs(self, finder: PackageFinder) -> None: # Install any extra build dependencies that the backend requests. # This must be done in a second pass, as the pyproject.toml # dependencies must be installed before we can call the backend. if ( self.req.editable and self.req.permit_editable_wheels and self.req.supports_pyproject_editable() ): build_reqs = self._get_build_requires_editable() else: build_reqs = self._get_build_requires_wheel() conflicting, missing = self.req.build_env.check_requirements(build_reqs) if conflicting: self._raise_conflicts("the backend dependencies", conflicting) self.req.build_env.install_requirements( finder, missing, "normal", "Installing backend dependencies" ) def _raise_conflicts( self, conflicting_with: str, conflicting_reqs: Set[Tuple[str, str]] ) -> None: format_string = ( "Some build dependencies for {requirement} " "conflict with {conflicting_with}: {description}." ) error_message = format_string.format( requirement=self.req, conflicting_with=conflicting_with, description=", ".join( f"{installed} is incompatible with {wanted}" for installed, wanted in sorted(conflicting_reqs) ), ) raise InstallationError(error_message)	5.47 KB	2026-01-07 23:39
📄 wheel.py from pip._vendor.packaging.utils import canonicalize_name from pip._internal.distributions.base import AbstractDistribution from pip._internal.index.package_finder import PackageFinder from pip._internal.metadata import ( BaseDistribution, FilesystemWheel, get_wheel_distribution, ) class WheelDistribution(AbstractDistribution): """Represents a wheel distribution. This does not need any preparation as wheels can be directly unpacked. """ def get_metadata_distribution(self) -> BaseDistribution: """Loads the metadata from the wheel file into memory and returns a Distribution that uses it, not relying on the wheel file or requirement. """ assert self.req.local_file_path, "Set as part of preparation during download" assert self.req.name, "Wheels are never unnamed" wheel = FilesystemWheel(self.req.local_file_path) return get_wheel_distribution(wheel, canonicalize_name(self.req.name)) def prepare_distribution_metadata( self, finder: PackageFinder, build_isolation: bool ) -> None: pass	1.09 KB	2026-01-07 23:39

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