Foo Chuan Wei schreef op di 19-04-2022 om 07:27 [+0000]:
> +             (string-append "BIN=" %output "/bin")
> +             (string-append "MAN=" %output "/share/man"))

%output is undocumented, use #$output instead:

  (arguments
    (list #:make-flags
          #~(list (string-append "CC=" #$(cc-for-target))
                  (string-append "BIN=" #$output "/bin")
                  ...)
          #:phases
          #~(modify-phases ...)
          ...))

Greetings,
Maxime.