Due to PATH, it appears that the "xz" used was not the correct one:
$ type xz /usr/local/bin/xz $ /usr/local/bin/xz --version xz 4.999.8beta liblzma 4.999.8beta $ /usr/bin/xz --version xz (XZ Utils) 5.1.0alpha liblzma 5.1.0alpha I've removed /usr/local/bin/xz And git-buildpackage works. Still, it might be a good idea to catch the xz(1) "unrecognized option" condition and act accordingly to display something like: ERROR: probably incorrect version of xz. Please check. Jari -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org