@not2b @mcc There are some Linux-specific system calls that systemd is unlikely to have much use for. And you wouldn't need all of the driver and architecture code in the kernel depending on what exactly your goal is. And that's a big part of the kernel. Etc.

But yeah. I think the systemd project generally has the philosophy of taking advantage of what Linux offers and not caring about POSIX/BSD. Lennart Poettering at least has explicitly argued developers should ignore BSD/POSIX.