310 lines
9.4 KiB
Python
310 lines
9.4 KiB
Python
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"""Orchestrator for building wheels from InstallRequirements.
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"""
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# The following comment should be removed at some point in the future.
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# mypy: strict-optional=False
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import logging
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import os.path
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import re
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import shutil
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from pip._internal.models.link import Link
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from pip._internal.operations.build.wheel import build_wheel_pep517
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from pip._internal.operations.build.wheel_legacy import build_wheel_legacy
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from pip._internal.utils.logging import indent_log
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from pip._internal.utils.misc import ensure_dir, hash_file, is_wheel_installed
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from pip._internal.utils.setuptools_build import make_setuptools_clean_args
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from pip._internal.utils.subprocess import call_subprocess
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from pip._internal.utils.temp_dir import TempDirectory
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from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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from pip._internal.utils.urls import path_to_url
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from pip._internal.vcs import vcs
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if MYPY_CHECK_RUNNING:
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from typing import (
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Any, Callable, Iterable, List, Optional, Pattern, Tuple,
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)
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from pip._internal.cache import WheelCache
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from pip._internal.req.req_install import InstallRequirement
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BinaryAllowedPredicate = Callable[[InstallRequirement], bool]
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BuildResult = Tuple[List[InstallRequirement], List[InstallRequirement]]
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logger = logging.getLogger(__name__)
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def _contains_egg_info(
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s, _egg_info_re=re.compile(r'([a-z0-9_.]+)-([a-z0-9_.!+-]+)', re.I)):
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# type: (str, Pattern[str]) -> bool
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"""Determine whether the string looks like an egg_info.
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:param s: The string to parse. E.g. foo-2.1
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"""
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return bool(_egg_info_re.search(s))
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def _should_build(
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req, # type: InstallRequirement
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need_wheel, # type: bool
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check_binary_allowed, # type: BinaryAllowedPredicate
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):
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# type: (...) -> bool
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"""Return whether an InstallRequirement should be built into a wheel."""
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if req.constraint:
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# never build requirements that are merely constraints
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return False
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if req.is_wheel:
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if need_wheel:
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logger.info(
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'Skipping %s, due to already being wheel.', req.name,
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)
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return False
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if need_wheel:
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# i.e. pip wheel, not pip install
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return True
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# From this point, this concerns the pip install command only
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# (need_wheel=False).
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if req.editable or not req.source_dir:
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return False
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if not check_binary_allowed(req):
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logger.info(
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"Skipping wheel build for %s, due to binaries "
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"being disabled for it.", req.name,
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)
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return False
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if not req.use_pep517 and not is_wheel_installed():
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# we don't build legacy requirements if wheel is not installed
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logger.info(
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"Using legacy setup.py install for %s, "
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"since package 'wheel' is not installed.", req.name,
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)
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return False
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return True
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def should_build_for_wheel_command(
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req, # type: InstallRequirement
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):
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# type: (...) -> bool
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return _should_build(
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req, need_wheel=True, check_binary_allowed=_always_true
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)
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def should_build_for_install_command(
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req, # type: InstallRequirement
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check_binary_allowed, # type: BinaryAllowedPredicate
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):
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# type: (...) -> bool
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return _should_build(
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req, need_wheel=False, check_binary_allowed=check_binary_allowed
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)
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def _should_cache(
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req, # type: InstallRequirement
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):
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# type: (...) -> Optional[bool]
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"""
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Return whether a built InstallRequirement can be stored in the persistent
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wheel cache, assuming the wheel cache is available, and _should_build()
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has determined a wheel needs to be built.
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"""
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if not should_build_for_install_command(
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req, check_binary_allowed=_always_true
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):
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# never cache if pip install would not have built
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# (editable mode, etc)
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return False
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if req.link and req.link.is_vcs:
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# VCS checkout. Do not cache
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# unless it points to an immutable commit hash.
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assert not req.editable
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assert req.source_dir
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vcs_backend = vcs.get_backend_for_scheme(req.link.scheme)
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assert vcs_backend
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if vcs_backend.is_immutable_rev_checkout(req.link.url, req.source_dir):
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return True
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return False
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base, ext = req.link.splitext()
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if _contains_egg_info(base):
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return True
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# Otherwise, do not cache.
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return False
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def _get_cache_dir(
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req, # type: InstallRequirement
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wheel_cache, # type: WheelCache
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):
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# type: (...) -> str
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"""Return the persistent or temporary cache directory where the built
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wheel need to be stored.
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"""
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cache_available = bool(wheel_cache.cache_dir)
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if cache_available and _should_cache(req):
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cache_dir = wheel_cache.get_path_for_link(req.link)
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else:
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cache_dir = wheel_cache.get_ephem_path_for_link(req.link)
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return cache_dir
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def _always_true(_):
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# type: (Any) -> bool
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return True
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def _build_one(
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req, # type: InstallRequirement
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output_dir, # type: str
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build_options, # type: List[str]
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global_options, # type: List[str]
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):
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# type: (...) -> Optional[str]
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"""Build one wheel.
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:return: The filename of the built wheel, or None if the build failed.
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"""
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try:
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ensure_dir(output_dir)
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except OSError as e:
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logger.warning(
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"Building wheel for %s failed: %s",
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req.name, e,
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)
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return None
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# Install build deps into temporary directory (PEP 518)
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with req.build_env:
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return _build_one_inside_env(
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req, output_dir, build_options, global_options
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)
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def _build_one_inside_env(
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req, # type: InstallRequirement
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output_dir, # type: str
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build_options, # type: List[str]
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global_options, # type: List[str]
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):
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# type: (...) -> Optional[str]
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with TempDirectory(kind="wheel") as temp_dir:
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if req.use_pep517:
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wheel_path = build_wheel_pep517(
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name=req.name,
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backend=req.pep517_backend,
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metadata_directory=req.metadata_directory,
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build_options=build_options,
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tempd=temp_dir.path,
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)
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else:
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wheel_path = build_wheel_legacy(
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name=req.name,
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setup_py_path=req.setup_py_path,
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source_dir=req.unpacked_source_directory,
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global_options=global_options,
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build_options=build_options,
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tempd=temp_dir.path,
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)
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if wheel_path is not None:
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wheel_name = os.path.basename(wheel_path)
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dest_path = os.path.join(output_dir, wheel_name)
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try:
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wheel_hash, length = hash_file(wheel_path)
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shutil.move(wheel_path, dest_path)
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logger.info('Created wheel for %s: '
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'filename=%s size=%d sha256=%s',
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req.name, wheel_name, length,
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wheel_hash.hexdigest())
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logger.info('Stored in directory: %s', output_dir)
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return dest_path
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except Exception as e:
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logger.warning(
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"Building wheel for %s failed: %s",
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req.name, e,
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)
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# Ignore return, we can't do anything else useful.
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if not req.use_pep517:
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_clean_one_legacy(req, global_options)
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return None
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def _clean_one_legacy(req, global_options):
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# type: (InstallRequirement, List[str]) -> bool
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clean_args = make_setuptools_clean_args(
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req.setup_py_path,
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global_options=global_options,
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)
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logger.info('Running setup.py clean for %s', req.name)
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try:
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call_subprocess(clean_args, cwd=req.source_dir)
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return True
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except Exception:
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logger.error('Failed cleaning build dir for %s', req.name)
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return False
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def build(
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requirements, # type: Iterable[InstallRequirement]
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wheel_cache, # type: WheelCache
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build_options, # type: List[str]
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global_options, # type: List[str]
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):
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# type: (...) -> BuildResult
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"""Build wheels.
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:return: The list of InstallRequirement that succeeded to build and
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the list of InstallRequirement that failed to build.
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"""
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if not requirements:
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return [], []
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# Build the wheels.
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logger.info(
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'Building wheels for collected packages: %s',
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', '.join(req.name for req in requirements),
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)
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with indent_log():
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build_successes, build_failures = [], []
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for req in requirements:
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cache_dir = _get_cache_dir(req, wheel_cache)
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wheel_file = _build_one(
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req, cache_dir, build_options, global_options
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)
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if wheel_file:
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# Update the link for this.
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req.link = Link(path_to_url(wheel_file))
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req.local_file_path = req.link.file_path
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assert req.link.is_wheel
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build_successes.append(req)
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else:
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build_failures.append(req)
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# notify success/failure
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if build_successes:
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logger.info(
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'Successfully built %s',
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' '.join([req.name for req in build_successes]),
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)
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if build_failures:
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logger.info(
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'Failed to build %s',
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' '.join([req.name for req in build_failures]),
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)
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# Return a list of requirements that failed to build
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return build_successes, build_failures
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