59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
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# SPDX-License-Identifier: MIT
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import os
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import pathlib
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import sys
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import tempfile
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import pep517
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import build
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import build.env
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if sys.version_info >= (3, 8):
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import importlib.metadata as importlib_metadata
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else:
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import importlib_metadata
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def _project_wheel_metadata(builder: build.ProjectBuilder) -> 'importlib_metadata.PackageMetadata':
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with tempfile.TemporaryDirectory() as tmpdir:
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path = pathlib.Path(builder.metadata_path(tmpdir))
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# https://github.com/python/importlib_metadata/pull/343
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return importlib_metadata.PathDistribution(path).metadata # type: ignore[arg-type]
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def project_wheel_metadata(
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srcdir: build.PathType,
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isolated: bool = True,
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) -> 'importlib_metadata.PackageMetadata':
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"""
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Return the wheel metadata for a project.
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Uses the ``prepare_metadata_for_build_wheel`` hook if available,
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otherwise ``build_wheel``.
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:param srcdir: Project source directory
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:param isolated: Whether or not to run invoke the backend in the current
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environment or to create an isolated one and invoke it
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there.
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"""
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builder = build.ProjectBuilder(
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os.fspath(srcdir),
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runner=pep517.quiet_subprocess_runner,
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)
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if not isolated:
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return _project_wheel_metadata(builder)
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with build.env.IsolatedEnvBuilder() as env:
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builder.python_executable = env.executable
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builder.scripts_dir = env.scripts_dir
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env.install(builder.build_system_requires)
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env.install(builder.get_requires_for_build('wheel'))
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return _project_wheel_metadata(builder)
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__all__ = ('project_wheel_metadata',)
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