The inevitable move to support concurrency via Fibers will be a forcing function for this. With the state of the ecosystem I don't know if all the libraries in

The inevitable move to support concurrency via Fibers will be a forcing function for this. With the state of the ecosystem I don't know if all the libraries in your transitive dependency hierarchy will ever get rid of their globals though. If not, you'll have funny race conditions between multiple Fibers in external libraries to debug forever.