Xinglu Chen schreef op zo 06-02-2022 om 14:00 [+0100]: >                      (lambda _ >                        (substitute* (find-files "." "\\.c$") >                          (("/bin/sh") (which "sh")))))))) FWIW this is wrong when cross-compiling, this needs to use (search-input-file inputs "bin/sh") instead such that a (cross-compiled) shell from 'inputs' is used instead of a (native) bash from 'native-inputs'. That's a bug in the old package definition though. Greetings, Maxime.