Much like libraries that run on Scala 2.11 or 2.12, I can imagine a system where I maintain several compatible minor versions (or named forks) of a library, eac

Much like libraries that run on Scala 2.11 or 2.12, I can imagine a system where I maintain several compatible minor versions (or named forks) of a library, each patched to use a different major version of Guava, and letting a caller solve for exactly which version of everything is compatible with everything else. But the more API churn we face, the harder this is.