>> Create a new custom chroot with the packages preinstalled on demand. > Sounds like a use-case for combining pbuilder and cowdancer (or lvm > snapshots). No time-consuming tarball extraction, disk usage is reduced > and the original chroot is untouched. Or just plain schroot on lvm snapshots. It even has some functionality of sudo to grad specific users administrative priviledges in the chroots. Greetings, Reinhard