[[!comment format=mdwn username="spwhitton" avatar="http://cdn.libravatar.org/avatar/9c3f08f80e67733fd506c353239569eb" subject="comment 3" date="2017-09-02T02:47:01Z" content=""" Thank you for the detailed report. I think the problem is the proxy propagation happens after the sbuild-createchroot command has run, but if the sbuild-createchroot command needs the proxy, it will fail in the way you describe. After speaking to Joey at DebConf I think I can rework the sbuild module to bypass sbuild-createchroot and run debootstrap itself, without thereby polluting the chroot that is created. That should make it much easier to fix this bug, so I'll do that first. """]]