Ansgar Burchardt writes ("Bug#727708: init system other points, and conclusion"):What about the cgroup management functionality that newer versions of logind require? Should the systemd maintainers also reimplement it in upstart?This is a somewhat separate issue, but: I think bundling the single cgroup writer into systemd is a very poor design choice. I think the bad consequences of that choice should be borne by the people who made it.