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annotate lib/python3.8/site-packages/pip/_internal/operations/build/metadata.py @ 0:9e54283cc701 draft

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"planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
author guerler
date Mon, 27 Jul 2020 03:47:31 -0400
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1 """Metadata generation logic for source distributions.
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2 """
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3
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4 import logging
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5 import os
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6
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7 from pip._internal.utils.subprocess import runner_with_spinner_message
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8 from pip._internal.utils.temp_dir import TempDirectory
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9 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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10
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11 if MYPY_CHECK_RUNNING:
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12 from pip._internal.build_env import BuildEnvironment
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13 from pip._vendor.pep517.wrappers import Pep517HookCaller
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15 logger = logging.getLogger(__name__)
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18 def generate_metadata(build_env, backend):
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19 # type: (BuildEnvironment, Pep517HookCaller) -> str
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20 """Generate metadata using mechanisms described in PEP 517.
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21
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22 Returns the generated metadata directory.
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23 """
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24 metadata_tmpdir = TempDirectory(
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25 kind="modern-metadata", globally_managed=True
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26 )
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28 metadata_dir = metadata_tmpdir.path
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29
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30 with build_env:
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31 # Note that Pep517HookCaller implements a fallback for
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32 # prepare_metadata_for_build_wheel, so we don't have to
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33 # consider the possibility that this hook doesn't exist.
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34 runner = runner_with_spinner_message("Preparing wheel metadata")
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35 with backend.subprocess_runner(runner):
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36 distinfo_dir = backend.prepare_metadata_for_build_wheel(
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37 metadata_dir
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38 )
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39
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40 return os.path.join(metadata_dir, distinfo_dir)