Hi, Tanguy Le Carrour schreef op ma 17-01-2022 om 14:34 [+0100]: > +                    (replace 'check > +                      (lambda _ > +                        (invoke "nosetests" "-v")))))) This needs to be (lambda* (#:key tests? #:allow-other-keys) (when tests? (invoke ...))) to make "--without-tests" work. Greetings, Maxime.