deploy schleuder using Debian packages
since we setup schleuder, upstream packaging improved tremendously. it's true that it used to not be packaged at all, but now there are schleuder 3 (we're at schleuder 2!) packages all the way back to stretch-backports! so there's really no reason to run our own custom thing...
https://tracker.debian.org/pkg/schleuder
redeploy using debian packages, maybe even through puppet, to avoid this problem and ease future maintenance.