It should work (on the trunk anyway) ... SolrCore uses PluginInfos for the SOlrEventListeners.
If it's not working that way please open a bug. (BTW: what gives you the impression that "It doesn't seem that listeners are part of PluginInfo scheme though" ?) : Before digging through src ... : : Docs say ... "Every component can have an extra attribute enable which can be set as true/false." : : It doesn't seem that listeners are part of PluginInfo scheme though ... for example is this possible? : : <listener event="firstSearcher" class="solr.QuerySenderListener" enable="{enable.listeners:true}> : : Thanks. : : - Jon : -Hoss