I recently saw it article in infoq:
https://www.infoq.com/news/2016/09/ceylon-13-android-support
I installed the plugin in Android studio 2.2 without problems. But when In the Android view, Right-click on app > Configure Ceylon in this Module
I got it:
Error:Class com.android.build.gradle.internal.scope.VariantScopeImpl does not implement the requested interface com.android.build.gradle.internal.scope.BaseScope