> setup; reload

> dep/package
$ copy-file dep/target/dep.jar use/lib/dep.jar

# done this way because last modified times often have ~1s resolution
> use/compile
$ sleep 2000

$ copy-file changes/Break.scala dep/A.scala
> dep/package
$ copy-file dep/target/dep.jar use/lib/dep.jar

-> use/compile
