Hi, > + (invoke "make" "install" > + "PREFIX=" > + (string-append "DESTDIR=" out))) Are you sure about that? Usually, DESTDIR is in order to supply a temporary build root (which will not be referred-to by the installed programs--because that directory will be deleted after the build) and PREFIX is in order to supply an actual installation directory (installed programs can refer to that whenever they want). Is it different for this program? Also, I'd suggest to use #:make-flags so other phases can also see the PREFIX chosen. Otherwise, those could erroneously default to another prefix (for loading of config files at runtime etc). What do you think?