Unused imports difficult to silence

[som-snytt]

reproduction steps

using Scala 2.13,

scala/scala-collection-compat#240

demonstrates that the collection.compat import is difficult to selectively silence.

problem

If unused import warning specified origin (the imported thing, minus any wildcard) it would be trivial to suppress origin=scala.collection.compat.

[SethTisue]

@som-snytt thinking of returning to this yourself? or should we just leave it out here with the "help wanted" sign?

[som-snytt]

Maybe with the "abandon hope all ye who enter here" sign.

[valencik]

@som-snytt could you elaborate on the "2 🐩 " close reason here? 😆
The scala-collection-compat seems like it could reach the bar for warranting a special case?