static LS namesOfLocalPublicMechListCopies() {
  ret mapNonNulls_pcall(f -> {
    Map meta = safeUnstructMap(loadTextFile(f));
    ret !cic(getString Status(meta), "PUBLIC READ") ? null : getString Name(meta);
  },
    listFilesWithExtension(remoteMechListMirrorsDir(), ".meta"));
}