Edit /etc/virt-builder/repos.d/libguestfs.conf Add a space at the end of the "[libguestfs.org]" line Run "virt-builder list" Result: virt-builder: /etc/xdg/virt-builder/repos.d/libguestfs.conf: syntax error at line 1: syntax error [ignored] Expected result: The blank space is ignored, and the repo file can be used as usual
Simple patch posted yesterday: https://www.redhat.com/archives/libguestfs/2017-October/msg00191.html
Fixed with https://github.com/libguestfs/libguestfs/commit/0d4136c69fb00289cba560f2c1e8d9ea69ad76f0 which is in libguestfs >= 1.37.32.