a.
        :rtype: str

        .. admonition:: Fallback

            If the build backend does not define a hook with this name and
            ``_allow_fallback`` is truthy, the backend will be asked to build a
            wheel via the ``build_editable`` hook and the dist-info
            extracted from that will be returned.
        Ú#prepare_metadata_for_build_editablerb