On Sun, Apr 17, 2016 at 02:31:25PM +0200, Danny Milosavljevic wrote: + ;; Some source files specify gpl2, however COPYING is gpl3. + (license (list license:gpl2 license:gpl3)))) That is a legally impossible. Do those gpl2 files have the "or later" clause. If so, then it should be gplv2+ If not, then this software may not be distributed. To do so would violate GPLv2. J' -- Avoid eavesdropping. Send strong encryted email. 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.