According to this: <https://discuss.gradle.org/t/k...

# build-tools

[pavel]

According to this: https://discuss.gradle.org/t/kotlin-groovy-and-java-compilation/14903/2

you can jointly compile Groovy and Java
you can jointly compile Kotlin and Java
you can serially compile any combination (but that means dependencies can only go in one direction, e.g. Java < Groovy < Kotlin)

so what we want is to jointly compile Groovy and Kotlin