They needed to ditch Groovy for Play 2. Seems the Android guys are facing the same problems with Groovy in their Gradle based build system, and the Gradle tea

They needed to ditch Groovy for Play 2. Seems the Android guys are facing the same problems with Groovy in their Gradle based build system, and the Gradle team are considering switching to Scala for Gradle 2 to keep Android on board.