this <https://kotlinlang.org/docs/whatsnew18.html#...

# k2-adopters

[apatrida]

this https://kotlinlang.org/docs/whatsnew18.html#exposing-kotlin-compiler-options-as-gradle-lazy-properties
should change the suggested change to not be tasks.named(...) but instead tasks.withType<KotlinCompiler>() -- even I know better and still didn't pay attention as copying that in, others might not know it doesn't affect test but only main.