Hi, Attila Lendvai schreef op do 13-01-2022 om 09:55 [+0000]: > +      (arguments > +       '(#:not-compiled-file-regexp "srfi/189\\.scm$")) Maybe do "guix build guile-srfi-189" to determine if srfi/189.sld is actually compiled to .../srfi/srfi-189.go? Greetings, Maxime.