golden hour

/usr/lib/python3.9/site-packages/pip/_internal/operations/build

File/Folder	Size	Actions
__init__.py	0 B
__pycache__	-
metadata.py	1.09 KB
metadata_editable.py	1.15 KB
metadata_legacy.py	1.9 KB
wheel.py	1.04 KB
wheel_editable.py	1.37 KB
wheel_legacy.py	2.98 KB

Edit: metadata_editable.py

"""Metadata generation logic for source distributions.
"""

import os

from pip._vendor.pep517.wrappers import Pep517HookCaller

from pip._internal.build_env import BuildEnvironment
from pip._internal.utils.subprocess import runner_with_spinner_message
from pip._internal.utils.temp_dir import TempDirectory

def generate_editable_metadata(
    build_env: BuildEnvironment, backend: Pep517HookCaller
) -> str:
    """Generate metadata using mechanisms described in PEP 660.

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/editable, so we don't have to
        # consider the possibility that this hook doesn't exist.
        runner = runner_with_spinner_message(
            "Preparing editable metadata (pyproject.toml)"
        )
        with backend.subprocess_runner(runner):
            distinfo_dir = backend.prepare_metadata_for_build_editable(metadata_dir)

return os.path.join(metadata_dir, distinfo_dir)