Hi,
I just added a new branch "feature-autobuild/closure-classpath-sources" in which I am planning on refactoring the way we pass in sources to the closure compiler. Currently a lot of time is wasted by dumping the closure jar to the filesystem (maven-only) and then reading each file back in again (both builds). I would bet that if we used the resources from classpath directly, this would speed up things dramatically. So keep your fingers crossed. Chris