@domains = (
             {
               'libname' => 'foo',
               ...
               'options|roptions' => {
                                       'datapath'  => [ ... ],
                                       'indexpath' => [ ... ],
                                       'workpath'  => [ ... ],
                                       'metapath'  => [ ... ],
                                     },
             },
             {
               'libname' => 'bar',
               ...
               'options|roptions' => {
                                       'datapath'  => [ ... ],
                                       'indexpath' => [ ... ],
                                       'workpath'  => [ ... ],
                                       'metapath'  => [ ... ],
                                     },
             },
           );