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wheel_builder.py
"""Orchestrator for building wheels from InstallRequirements. """ import logging import os.path import re import shutil from typing import Iterable, List, Optional, Tuple from pip._vendor.packaging.utils import canonicalize_name, canonicalize_version from pip._vendor.packaging.version import InvalidVersion, Version from pip._internal.cache import WheelCache from pip._internal.exceptions import InvalidWheelFilename, UnsupportedWheel from pip._internal.metadata import FilesystemWheel, get_wheel_distribution from pip._internal.models.link import Link from pip._internal.models.wheel import Wheel from pip._internal.operations.build.wheel import build_wheel_pep517 from pip._internal.operations.build.wheel_editable import build_wheel_editable from pip._internal.operations.build.wheel_legacy import build_wheel_legacy from pip._internal.req.req_install import InstallRequirement from pip._internal.utils.logging import indent_log from pip._internal.utils.misc import ensure_dir, hash_file from pip._internal.utils.setuptools_build import make_setuptools_clean_args from pip._internal.utils.subprocess import call_subprocess from pip._internal.utils.temp_dir import TempDirectory from pip._internal.utils.urls import path_to_url from pip._internal.vcs import vcs logger = logging.getLogger(__name__) _egg_info_re = re.compile(r"([a-z0-9_.]+)-([a-z0-9_.!+-]+)", re.IGNORECASE) BuildResult = Tuple[List[InstallRequirement], List[InstallRequirement]] def _contains_egg_info(s: str) -> bool: """Determine whether the string looks like an egg_info. :param s: The string to parse. E.g. foo-2.1 """ return bool(_egg_info_re.search(s)) def _should_build( req: InstallRequirement, need_wheel: bool, ) -> bool: """Return whether an InstallRequirement should be built into a wheel.""" if req.constraint: # never build requirements that are merely constraints return False if req.is_wheel: if need_wheel: logger.info( "Skipping %s, due to already being wheel.", req.name, ) return False if need_wheel: # i.e. pip wheel, not pip install return True # From this point, this concerns the pip install command only # (need_wheel=False). if not req.source_dir: return False if req.editable: # we only build PEP 660 editable requirements return req.supports_pyproject_editable return True def should_build_for_wheel_command( req: InstallRequirement, ) -> bool: return _should_build(req, need_wheel=True) def should_build_for_install_command( req: InstallRequirement, ) -> bool: return _should_build(req, need_wheel=False) def _should_cache( req: InstallRequirement, ) -> Optional[bool]: """ Return whether a built InstallRequirement can be stored in the persistent wheel cache, assuming the wheel cache is available, and _should_build() has determined a wheel needs to be built. """ if req.editable or not req.source_dir: # never cache editable requirements return False if req.link and req.link.is_vcs: # VCS checkout. Do not cache # unless it points to an immutable commit hash. assert not req.editable assert req.source_dir vcs_backend = vcs.get_backend_for_scheme(req.link.scheme) assert vcs_backend if vcs_backend.is_immutable_rev_checkout(req.link.url, req.source_dir): return True return False assert req.link base, ext = req.link.splitext() if _contains_egg_info(base): return True # Otherwise, do not cache. return False def _get_cache_dir( req: InstallRequirement, wheel_cache: WheelCache, ) -> str: """Return the persistent or temporary cache directory where the built wheel need to be stored. """ cache_available = bool(wheel_cache.cache_dir) assert req.link if cache_available and _should_cache(req): cache_dir = wheel_cache.get_path_for_link(req.link) else: cache_dir = wheel_cache.get_ephem_path_for_link(req.link) return cache_dir def _verify_one(req: InstallRequirement, wheel_path: str) -> None: canonical_name = canonicalize_name(req.name or "") w = Wheel(os.path.basename(wheel_path)) if canonicalize_name(w.name) != canonical_name: raise InvalidWheelFilename( f"Wheel has unexpected file name: expected {canonical_name!r}, " f"got {w.name!r}", ) dist = get_wheel_distribution(FilesystemWheel(wheel_path), canonical_name) dist_verstr = str(dist.version) if canonicalize_version(dist_verstr) != canonicalize_version(w.version): raise InvalidWheelFilename( f"Wheel has unexpected file name: expected {dist_verstr!r}, " f"got {w.version!r}", ) metadata_version_value = dist.metadata_version if metadata_version_value is None: raise UnsupportedWheel("Missing Metadata-Version") try: metadata_version = Version(metadata_version_value) except InvalidVersion: msg = f"Invalid Metadata-Version: {metadata_version_value}" raise UnsupportedWheel(msg) if metadata_version >= Version("1.2") and not isinstance(dist.version, Version): raise UnsupportedWheel( f"Metadata 1.2 mandates PEP 440 version, but {dist_verstr!r} is not" ) def _build_one( req: InstallRequirement, output_dir: str, verify: bool, build_options: List[str], global_options: List[str], editable: bool, ) -> Optional[str]: """Build one wheel. :return: The filename of the built wheel, or None if the build failed. """ artifact = "editable" if editable else "wheel" try: ensure_dir(output_dir) except OSError as e: logger.warning( "Building %s for %s failed: %s", artifact, req.name, e, ) return None # Install build deps into temporary directory (PEP 518) with req.build_env: wheel_path = _build_one_inside_env( req, output_dir, build_options, global_options, editable ) if wheel_path and verify: try: _verify_one(req, wheel_path) except (InvalidWheelFilename, UnsupportedWheel) as e: logger.warning("Built %s for %s is invalid: %s", artifact, req.name, e) return None return wheel_path def _build_one_inside_env( req: InstallRequirement, output_dir: str, build_options: List[str], global_options: List[str], editable: bool, ) -> Optional[str]: with TempDirectory(kind="wheel") as temp_dir: assert req.name if req.use_pep517: assert req.metadata_directory assert req.pep517_backend if global_options: logger.warning( "Ignoring --global-option when building %s using PEP 517", req.name ) if build_options: logger.warning( "Ignoring --build-option when building %s using PEP 517", req.name ) if editable: wheel_path = build_wheel_editable( name=req.name, backend=req.pep517_backend, metadata_directory=req.metadata_directory, tempd=temp_dir.path, ) else: wheel_path = build_wheel_pep517( name=req.name, backend=req.pep517_backend, metadata_directory=req.metadata_directory, tempd=temp_dir.path, ) else: wheel_path = build_wheel_legacy( name=req.name, setup_py_path=req.setup_py_path, source_dir=req.unpacked_source_directory, global_options=global_options, build_options=build_options, tempd=temp_dir.path, ) if wheel_path is not None: wheel_name = os.path.basename(wheel_path) dest_path = os.path.join(output_dir, wheel_name) try: wheel_hash, length = hash_file(wheel_path) shutil.move(wheel_path, dest_path) logger.info( "Created wheel for %s: filename=%s size=%d sha256=%s", req.name, wheel_name, length, wheel_hash.hexdigest(), ) logger.info("Stored in directory: %s", output_dir) return dest_path except Exception as e: logger.warning( "Building wheel for %s failed: %s", req.name, e, ) # Ignore return, we can't do anything else useful. if not req.use_pep517: _clean_one_legacy(req, global_options) return None def _clean_one_legacy(req: InstallRequirement, global_options: List[str]) -> bool: clean_args = make_setuptools_clean_args( req.setup_py_path, global_options=global_options, ) logger.info("Running setup.py clean for %s", req.name) try: call_subprocess( clean_args, command_desc="python setup.py clean", cwd=req.source_dir ) return True except Exception: logger.error("Failed cleaning build dir for %s", req.name) return False def build( requirements: Iterable[InstallRequirement], wheel_cache: WheelCache, verify: bool, build_options: List[str], global_options: List[str], ) -> BuildResult: """Build wheels. :return: The list of InstallRequirement that succeeded to build and the list of InstallRequirement that failed to build. """ if not requirements: return [], [] # Build the wheels. logger.info( "Building wheels for collected packages: %s", ", ".join(req.name for req in requirements), # type: ignore ) with indent_log(): build_successes, build_failures = [], [] for req in requirements: assert req.name cache_dir = _get_cache_dir(req, wheel_cache) wheel_file = _build_one( req, cache_dir, verify, build_options, global_options, req.editable and req.permit_editable_wheels, ) if wheel_file: # Record the download origin in the cache if req.download_info is not None: # download_info is guaranteed to be set because when we build an # InstallRequirement it has been through the preparer before, but # let's be cautious. wheel_cache.record_download_origin(cache_dir, req.download_info) # Update the link for this. req.link = Link(path_to_url(wheel_file)) req.local_file_path = req.link.file_path assert req.link.is_wheel build_successes.append(req) else: build_failures.append(req) # notify success/failure if build_successes: logger.info( "Successfully built %s", " ".join([req.name for req in build_successes]), # type: ignore ) if build_failures: logger.info( "Failed to build %s", " ".join([req.name for req in build_failures]), # type: ignore ) # Return a list of requirements that failed to build return build_successes, build_failures
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