Run Grails 3.x with XRebel

build.gradle.xrebel.groovy

// To use XRebel in Grails 3.3.x, add to build.gradle bootRun block.
// Then you are able to conditionally enable XRebel by specifying "-Dxrebel=<path_to_xrebel>"
if (System.getProperty('xrebel')){
    if (new File(System.getProperty('xrebel')).exists()){
      jvmArgs "-javaagent:${System.getProperty('xrebel')}"
    } else {
      println "XRebel file ${System.getProperty('xrebel')} not found. Ignoring"
    }
}