We even have some unofficial docs on building multi platform, but of course still using groovy script.
The real question is: “what is happening with Kotlin Gradle DSL?”
The number of commits to the project seems to have dropped off, and perhaps it is no longer a priority?
Is gradle stuck with groovy script forever? Generally, groovy is now far less used by most measures than kotlin, and this is while kotlin is a much younger language. This seems a worry for basing too much on gradle if it is stuck with groovy script forever.