@witty-crayon-22786 getting jars out of an arbitrary folder inside this zip, and onto the classpath, would be a great start. Ideally I'd get the rest of the zip on disk somewhere too, so open to solutions where I use pants for download only, and my fallback is a totally custom shell script. RE: your suggestion, not clear how I'd construct a jar_library including jars from inside a zip. Here's what I've been playing with - https://gist.github.com/jameskoch2/22108f3f4eb3107e353aca9efd72c329