Having proper logging would make things easier for everyone, and I assume most people would agree with that. Telling someone to rerun with WINIT_LOG_LEVEL=debug is much better than saying "rebuild against this branch I made that has some println added that are hopefully relevant", which is something I've had to do a few times now.

Is slog the best way to go about adding logging? I'm also in favor of making the sink global, since passing it around would make this much more tedious to implement.