As a Scala newcomer, the new-style Scala 3 syntax is all I know. So I tried to write my Mill build script using that syntax and IIRC just got an obscure error.

As a Scala newcomer, the new-style Scala 3 syntax is all I know. So I tried to write my Mill build script using that syntax and IIRC just got an obscure error. Doh! Another instance of language ecosystem pain.