[awilfox]

KDE really, really needs logind - it can't really use ConsoleKit any more. Same with SDDM, though I think the CK2 backend is still writhing in agony somewhere in its codebase.

And KDE's touchpad integration relies on libinput, which relies on udevd. I think libinput might work with mdev if you really try hard enough?

I am not aware of KDE having dependencies on any other bits of systemd, at least Plasma 5 LTS doesn't.

[bmicraft]

I was under the impression Plasma 5 (supposedly even Plasma 6 Beta) runs at least "fine" on the BSDs, no?

[awilfox]

They have ConsoleKit2 support patched back in.

libudev-devd - a stub implementing UDev APIs atop FreeBSD devd: https://www.freshports.org/devel/libudev-devd/