Targets living in cross modules can now be properly discovered, run and cached.

Try out the following commands on our Mill `build.sc` file to exercise this functionality

- `scalaplugin/target/mill run Core.cross[jarA].jar`
- `scalaplugin/target/mill run Core.cross[jarB].jar`
- `scalaplugin/target/mill run Core.cross[jarC].jar`

1 files changed, 2 insertions, 2 deletions

diff --git a/scalaplugin/src/main/scala/mill/scalaplugin/GenIdea.scala b/scalaplugin/src/main/scala/mill/scalaplugin/GenIdea.scala
index f51561d0..fd360d8b 100644
--- a/scalaplugin/src/main/scala/mill/scalaplugin/GenIdea.scala
+++ b/scalaplugin/src/main/scala/mill/scalaplugin/GenIdea.scala
@@ -23,8 +23,8 @@ object GenIdea {
     val workspacePath = pwd / 'out
     val evaluator = new Evaluator(workspacePath, mapping, _ => ())
 
-    val modules = Mirror.traverse(discovered.mirror){ (h, p) =>
-      h.node(obj, Nil) match {
+    val modules = Mirror.traverse(obj, discovered.mirror){ (h, p) =>
+      h.node(obj, p.map{case Mirror.Segment.Cross(vs) => vs case _ => Nil}.toList) match {
         case m: ScalaModule => Seq(p -> m)
         case _ => Nil
       }