That's my experience as well. Guix error messages can get quickly completely unreadable, as you are five layers depth into some Scheme macro expansion and where

That's my experience as well. Guix error messages can get quickly completely unreadable, as you are five layers depth into some Scheme macro expansion and wherever that code originally came from that caused the problem is long forgotten by the time the error message is created. Having a whole system, including the package database, build out of raw Scheme really doesn't feel like a good idea. It sure is flexible, but also really brittle and the performance is quite horrible. I am currently in the process of switching over to Nix, which handles that all a bit more sanely.