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"""Metadata generation logic for legacy source distributions.
"""
import logging
import os
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
from pip._internal.utils.typing import MYPY_CHECK_RUNNING
if MYPY_CHECK_RUNNING:
from pip._internal.build_env import BuildEnvironment
logger = logging.getLogger(__name__)
def _find_egg_info(directory):
# type: (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(
"No .egg-info directory found in {}".format(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, # type: BuildEnvironment
setup_py_path, # type: str
source_dir, # type: str
isolated, # type: bool
details, # type: str
):
# type: (...) -> 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:
call_subprocess(
args,
cwd=source_dir,
command_desc='python setup.py egg_info',
)
# Return the .egg-info directory.
return _find_egg_info(egg_info_dir)
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