Arun Isaac schreef op di 29-03-2022 om 00:25 [+0530]:
> +       #:make-flags (list (string-append "INSTALLDIR="
> +                                         (assoc-ref %outputs "out")))

%outputs is almost undocumented (and for some build systems even
undefined), I recommend G-exps instead:

  (arguments
    (list #:make-flags
          #~(list (string-append "INSTALLDIR=" #$output))
          ...))

Greetings,
Maxime.