Edit: wheel_builder.py
"""Orchestrator for building wheels from InstallRequirements. """ import logging import os.path import re import shutil from pip._internal.models.link import Link from pip._internal.operations.build.wheel import build_wheel_pep517 from pip._internal.operations.build.wheel_legacy import build_wheel_legacy from pip._internal.utils.logging import indent_log from pip._internal.utils.misc import ensure_dir, hash_file, is_wheel_installed 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.typing import MYPY_CHECK_RUNNING from pip._internal.utils.urls import path_to_url from pip._internal.vcs import vcs if MYPY_CHECK_RUNNING: from typing import ( Any, Callable, Iterable, List, Optional, Tuple, ) from pip._internal.cache import WheelCache from pip._internal.req.req_install import InstallRequirement BinaryAllowedPredicate = Callable[[InstallRequirement], bool] BuildResult = Tuple[List[InstallRequirement], List[InstallRequirement]] logger = logging.getLogger(__name__) _egg_info_re = re.compile(r'([a-z0-9_.]+)-([a-z0-9_.!+-]+)', re.IGNORECASE) def _contains_egg_info(s): # type: (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, # type: InstallRequirement need_wheel, # type: bool check_binary_allowed, # type: BinaryAllowedPredicate ): # type: (...) -> 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 req.editable or not req.source_dir: return False if not check_binary_allowed(req): logger.info( "Skipping wheel build for %s, due to binaries " "being disabled for it.", req.name, ) return False if not req.use_pep517 and not is_wheel_installed(): # we don't build legacy requirements if wheel is not installed logger.info( "Using legacy 'setup.py install' for %s, " "since package 'wheel' is not installed.", req.name, ) return False return True def should_build_for_wheel_command( req, # type: InstallRequirement ): # type: (...) -> bool return _should_build( req, need_wheel=True, check_binary_allowed=_always_true ) def should_build_for_install_command( req, # type: InstallRequirement check_binary_allowed, # type: BinaryAllowedPredicate ): # type: (...) -> bool return _should_build( req, need_wheel=False, check_binary_allowed=check_binary_allowed ) def _should_cache( req, # type: InstallRequirement ): # type: (...) -> 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, # type: InstallRequirement wheel_cache, # type: WheelCache ): # type: (...) -> 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 _always_true(_): # type: (Any) -> bool return True def _build_one( req, # type: InstallRequirement output_dir, # type: str build_options, # type: List[str] global_options, # type: List[str] ): # type: (...) -> Optional[str] """Build one wheel. :return: The filename of the built wheel, or None if the build failed. """ try: ensure_dir(output_dir) except OSError as e: logger.warning( "Building wheel for %s failed: %s", req.name, e, ) return None # Install build deps into temporary directory (PEP 518) with req.build_env: return _build_one_inside_env( req, output_dir, build_options, global_options ) def _build_one_inside_env( req, # type: InstallRequirement output_dir, # type: str build_options, # type: List[str] global_options, # type: List[str] ): # type: (...) -> Optional[str] with TempDirectory(kind="wheel") as temp_dir: assert req.name if req.use_pep517: assert req.metadata_directory wheel_path = build_wheel_pep517( name=req.name, backend=req.pep517_backend, metadata_directory=req.metadata_directory, build_options=build_options, 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, global_options): # type: (InstallRequirement, 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, cwd=req.source_dir) return True except Exception: logger.error('Failed cleaning build dir for %s', req.name) return False def build( requirements, # type: Iterable[InstallRequirement] wheel_cache, # type: WheelCache build_options, # type: List[str] global_options, # type: List[str] ): # type: (...) -> 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: cache_dir = _get_cache_dir(req, wheel_cache) wheel_file = _build_one( req, cache_dir, build_options, global_options ) if wheel_file: # 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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