println(KotlinVersion.CURRENT) tells me that I’m actually running 1.9.24, which seems to be the most recent version supported by the Kotlin plugin, at least in Maven. I do have K2 enabled. 1.9.24 should suffice, but it would be nice to run the latest Kotlin.
UPDATE: I was able to get it to use Kotlin 2.1.10, but I’m not really sure what did the trick. Maybe call it 1.5 hours total to figure out.