Your bug report #54750: (gnu packages racket) assumes that (ice-9 exceptions) exist, breaks pulling from old Guix which was filed against the guix package, has been closed. The explanation is attached below, along with your original report. If you require more details, please reply to 54750@debbugs.gnu.org. -- 54750: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=54750 GNU Bug Tracking System Contact help-debbugs@gnu.org with problems