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opt
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alt
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python35
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lib
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python3.5
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site-packages
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pip
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_internal
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operations
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build
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Filename :
metadata.py
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"""Metadata generation logic for source distributions. """ import os from pip._internal.utils.subprocess import runner_with_spinner_message from pip._internal.utils.temp_dir import TempDirectory from pip._internal.utils.typing import MYPY_CHECK_RUNNING if MYPY_CHECK_RUNNING: from pip._internal.build_env import BuildEnvironment from pip._vendor.pep517.wrappers import Pep517HookCaller def generate_metadata(build_env, backend): # type: (BuildEnvironment, Pep517HookCaller) -> str """Generate metadata using mechanisms described in PEP 517. 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, so we don't have to # consider the possibility that this hook doesn't exist. runner = runner_with_spinner_message("Preparing wheel metadata") with backend.subprocess_runner(runner): distinfo_dir = backend.prepare_metadata_for_build_wheel( metadata_dir ) return os.path.join(metadata_dir, distinfo_dir)