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