You can still use sysvinit, I've already tested servers and desktop builds. From my build box: chroot $MOUNTPOINT/ /bin/bash -c "http_proxy=$aptproxy apt-get -y --purge --allow remove-essential install sysvinit-core sysvinit-utils systemd-sysv- systemd-" There is a weird depends you cannot get around without simultaneously removing and installing in parallel. A Debian bug highlighted the above, with a "-" for systemd…
* https://jdebp.uk/Softwares/nosh/guide/services/systemd-login...