build - Use a different layouts/main.gsp based on environment in Grails -

i trying have 2 distinct layouts application. of changes css based, elements might moved around(such moving navbar top side). decided easiest have 2 main layouts, , pick 1 based on environment compile for.

i reading grails event scripts , how hoop on there. ideally have red_main.gsp , blue_main.gsp , copy 1 of them main.gsp during build time. examples online on limited , appreciate insight.

thank you!

here how did stuck in same boat. scripts/_events.gsp file:

eventcompilestart = { msg ->     def envn = grails.util.environment.current.name    def mainname = "";    if( envn.contains("_red" ) ) {        mainname = "main_red.gsp"    }    else {         mainname = "main_blue.gsp"    }     ant.copy(file: "${basedir}/grails-app/views/layouts/${mainname}",             tofile: "${basedir}/grails-app/views/layouts/main.gsp",             overwrite: true)  }