def METHOD_NAME(sdist_directory: str,
                config_settings: Optional[Dict[str, object]] = None) -> str:
    del config_settings
    sdist_filename = f'{PACKAGE}.tar.gz'
    with tarfile.open(f'{sdist_directory}/{sdist_filename}', 'w:gz', dereference=True) as sdist:
        for filename in find_sources(srcpkg=True):
            sdist.add(filename, arcname=f'{PACKAGE}/{filename}', )
    return sdist_filename