You can do it today with a few lines of code, although the implementation I show is not particularly robust (since it works by metaprogramming the import system

You can do it today with a few lines of code, although the implementation I show is not particularly robust (since it works by metaprogramming the import system, of course other code could interfere): https://news.ycombinator.com/item?id=45467489 https://news.ycombinator.com/item?id=45467489