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- """Metadata generation logic for source distributions.
- """
- import os
- from pip._vendor.pep517.wrappers import Pep517HookCaller
- from pip._internal.build_env import BuildEnvironment
- from pip._internal.utils.subprocess import runner_with_spinner_message
- from pip._internal.utils.temp_dir import TempDirectory
- def generate_editable_metadata(
- build_env: BuildEnvironment, backend: Pep517HookCaller
- ) -> str:
- """Generate metadata using mechanisms described in PEP 660.
- Returns the generated metadata directory.
- """
- metadata_tmpdir = TempDirectory(kind="modern-metadata", globally_managed=True)
- metadata_dir = metadata_tmpdir.path
- with build_env:
- # Note that Pep517HookCaller implements a fallback for
- # prepare_metadata_for_build_wheel/editable, so we don't have to
- # consider the possibility that this hook doesn't exist.
- runner = runner_with_spinner_message(
- "Preparing editable metadata (pyproject.toml)"
- )
- with backend.subprocess_runner(runner):
- distinfo_dir = backend.prepare_metadata_for_build_editable(metadata_dir)
- return os.path.join(metadata_dir, distinfo_dir)
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