"""Metadata generation logic for legacy source distributions.
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"""
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import logging
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import os
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from pip._internal.exceptions import InstallationError
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from pip._internal.utils.setuptools_build import make_setuptools_egg_info_args
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from pip._internal.utils.subprocess import call_subprocess
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from pip._internal.utils.temp_dir import TempDirectory
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from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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if MYPY_CHECK_RUNNING:
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from pip._internal.build_env import BuildEnvironment
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logger = logging.getLogger(__name__)
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def _find_egg_info(directory):
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# type: (str) -> str
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"""Find an .egg-info subdirectory in `directory`.
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"""
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filenames = [
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f for f in os.listdir(directory) if f.endswith(".egg-info")
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]
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if not filenames:
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raise InstallationError(
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"No .egg-info directory found in {}".format(directory)
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)
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if len(filenames) > 1:
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raise InstallationError(
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"More than one .egg-info directory found in {}".format(
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directory
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)
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)
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return os.path.join(directory, filenames[0])
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def generate_metadata(
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build_env, # type: BuildEnvironment
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setup_py_path, # type: str
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source_dir, # type: str
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isolated, # type: bool
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details, # type: str
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):
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# type: (...) -> str
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"""Generate metadata using setup.py-based defacto mechanisms.
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Returns the generated metadata directory.
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"""
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logger.debug(
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'Running setup.py (path:%s) egg_info for package %s',
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setup_py_path, details,
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)
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egg_info_dir = TempDirectory(
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kind="pip-egg-info", globally_managed=True
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).path
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args = make_setuptools_egg_info_args(
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setup_py_path,
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egg_info_dir=egg_info_dir,
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no_user_config=isolated,
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)
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with build_env:
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call_subprocess(
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args,
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cwd=source_dir,
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command_desc='python setup.py egg_info',
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)
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# Return the .egg-info directory.
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return _find_egg_info(egg_info_dir)
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