sharing authentication across multiple plugins in Grails

I have modularized a large Grails project into several plugins and want to share access to the spring security plugin to manage authentication across my project - is there an easy way to do this? I'm not sure how to share access to core project plugins from sub plugins

If you use spring security grails plugin for your authentication, then just define this plugin in your base-sub-plugin, like this:

grails.project.dependency.resolution = {
    [..]
    plugins {
        compile ":spring-security-core:1.1.3"
        compile ":spring-security-ui:0.1.2"     
    }
}

All your your custom plugins, that use this plugin, will automatically get the security plugin as a dependency and can use the springSecurityService (and do not need to define these plugins in there application.properties).