configure.ac contains the line: PKG_CHECK_MODULES([GUILE], [guile-2.0 >= 2.0.5]) But guix does not seem to be buildable using guile-2.0.5 J' -- PGP Public key ID: 1024D/2DE827B3 fingerprint = 8797 A26D 0854 2EAB 0285 A290 8A67 719C 2DE8 27B3 See http://sks-keyservers.net or any PGP keyserver for public key.