def _get_project_config_files(self, filenames=None):
            """Ignore ``pyproject.toml``, they are not related to setup_requires"""
            try:
                cfg, toml = super()._split_standard_project_metadata(filenames)
                return cfg, ()
            except Exception:
                return filenames, ()
Ignore ``pyproject.toml``, they are not related to setup_requires
product/gradle-plugin/src/main/python/setuptools/__init__.py