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, 9 insertions, 2 deletions

diff --git a/build.sc b/build.sc
index 86c5d636..08a5f3b9 100755
--- a/build.sc
+++ b/build.sc
@@ -22,10 +22,17 @@ object Core extends ScalaModule {
   override def sources = pwd/'core/'src/'main/'scala
 
   val cross =
-    for(c <- mill.define.Cross("a", "b", "c"))
+    for(jarLabel <- mill.define.Cross("jarA", "jarB", "jarC"))
     yield new mill.Module{
       def printIt() = T.command{
-        println("PRINTING IT: " + c)
+        println("PRINTING IT: " + jarLabel)
+      }
+      def jar = T{
+        val dest = T.ctx().dest
+        ammonite.ops.mkdir(dest/ammonite.ops.up)
+        ammonite.ops.cp(Core.jar().path, dest)
+
+        PathRef(dest)
       }
     }
 }