Hello! $ ./pre-inst-env guix describe Git checkout: repository: /home/lle-bout/src/guix branch: master commit: 8d89d3c9bf7cacd9c79b4aacf348044d4fe7800b $ make check-system Compiling Scheme modules... ice-9/eval.scm:142:16: In procedure compile-top-call: error: channel-source->package: unbound variable hint: Did you forget `(use-modules (gnu ci))'? make: *** [Makefile:6305: check-system] Error 1 I tried looking around I am not sure what the cause is. Thanks, Léo