Zhu Zihao skribis: > ECL's header includes the header of gmp, libgc, libatomic-ops and > libffi. This help fix some program use ecl as build input failed to link > with it. I tried a `guix environment -C --ad-hoc ecl -- ecl --eval '(compile-file "test.lisp")'` and ECL compiled the file successfully, so it must have found the headers it needed. Could you give an example of build failure solved by your patch?