> check
> compile

$ exists target/scala-3.0.0-M3/classes/A.tasty
$ exists target/scala-3.0.0-M3/classes/B.tasty

$ delete src/main/scala/B.scala

> compile

$ exists target/scala-3.0.0-M3/classes/A.tasty
-$ exists target/scala-3.0.0-M3/classes/B.tasty
