I forgot: the linter crashes, but not only on guile-miniadapton. Also on guile-irregex that was already there It might be something in the maser branch or something in my setup. I updated my system recently and I still don't know what is going on. Well, I know what is going on less than usual ;-) Thanks again ! Backtrace:uile-irregex@0.9.6 [cve]... 9 (primitive-load "/home/catonano/projects/readxl/scripts…") In guix/ui.scm: 1255:8 8 (run-guix-command _ . _) In srfi/srfi-1.scm: 640:9 7 (for-each # …) In guix/scripts/lint.scm: 982:4 6 (run-checkers _ _) In srfi/srfi-1.scm: 640:9 5 (for-each # …) In guix/scripts/lint.scm: 805:4 4 (check-vulnerabilities _) 800:9 3 (_ _) In unknown file: 2 (force #) In guix/scripts/lint.scm: 789:24 1 (_) In ice-9/boot-9.scm: 837:9 0 (catch srfi-34 # …) ice-9/boot-9.scm:837:9: In procedure catch: ice-9/boot-9.scm:837:9: Wrong type to apply: #