Only recompile Java files that changed?

[stoeckley]

Is there a way for this to only recompile those java files that have actually changed and would need new class files? It’s currently recompiling lots of large Protobuf files which never change, and the delay to do all of this is killing me. Any suggestions?

[ztellman]

You'd need to recompile the files that have changed and all their downstream dependencies, but the building blocks are there to identify those. I've been meaning to get around to this eventually, but in the meantime PRs are welcome if anyone else wants to take a stab.