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# SPDX-License-Identifier: MIT
from __future__ import annotations
import pathlib
import tempfile
import pyproject_hooks
from . import ProjectBuilder
from ._compat import importlib
from ._types import StrPath, SubprocessRunner
from .env import DefaultIsolatedEnv
def _project_wheel_metadata(builder: ProjectBuilder) -> importlib.metadata.PackageMetadata:
with tempfile.TemporaryDirectory() as tmpdir:
path = pathlib.Path(builder.metadata_path(tmpdir))
metadata = importlib.metadata.PathDistribution(path).metadata
assert metadata is not None
return metadata
def project_wheel_metadata(
source_dir: StrPath,
isolated: bool = True,
*,
runner: SubprocessRunner = pyproject_hooks.quiet_subprocess_runner,
) -> importlib.metadata.PackageMetadata:
"""
Return the wheel metadata for a project.
Uses the ``prepare_metadata_for_build_wheel`` hook if available,
otherwise ``build_wheel``.
:param source_dir: Project source directory
:param isolated: Whether or not to run invoke the backend in the current
environment or to create an isolated one and invoke it
there.
:param runner: An alternative runner for backend subprocesses
"""
if isolated:
with DefaultIsolatedEnv() as env:
builder = ProjectBuilder.from_isolated_env(
env,
source_dir,
runner=runner,
)
env.install(builder.build_system_requires)
env.install(builder.get_requires_for_build('wheel'))
return _project_wheel_metadata(builder)
else:
builder = ProjectBuilder(
source_dir,
runner=runner,
)
return _project_wheel_metadata(builder)
__all__ = [
'project_wheel_metadata',
]