such a thing could be pretty trainable too.
Imagine hoogle but using a massive corpus of codebases. Put in the signature you want and it will find matching ones from the corpus, show them to you to select. Want to pick an impl? Insert an import to the library automatically and call it, or auto-add it as a project dep and do the same, or auto-inline it
scala.toolsstuff get moved to in 2.13? I'm way behind on migrating some of our projects to 2.13 and I need something from scala.tools.nsc and it's not found without an explicit dependency but I can't figure out where that got moved to.