s6 VS nix-processmgmt

A (rare) good critique to systemd can be found here. Written by the developer behind s6, which happens to be scheduled to replace OpenRC on Alpine Linux. For completeness-sake, some of the main reasons why Alpine doesn't prefer systemd do not apply on most other distros.

It got mass-adopted while being imperfect, so that's to be expected. Thankfully its inception and the criticism that followed have paved the way for the likes of dinit and s6.

this page and this page, both by Laurent Bercot, creator of s6.

Of the two I have experience with, runit is simpler and thus easier to get the hang of than s6-rc/s6. Though the s6 (not s6-rc) docs at the author's site contain a lot of info (including apologetics and rationales) that applies almost equally well to runit

systemd: Yes; it's awaiting its "PipeWire". Thankfully, the likes of s6 and dinit are very promising. Though I can actually appreciate that systemd is addressed. As ultimately it helps in raising awareness that will benefit whatever software will replace it eventually.

Arguably this is less troublesome to solve compared to the other concerns. As we're inevitably waiting for the system supervision suite that will be to systemd what PipeWire has been to PulseAudio. I'm very optimistic about this as both s6 and Dinit are shaping up lovely.

Using the s6-service add command I added a service called "libvertd" when I ment to put "libvirtd". Now when I run s6-db-reload it spits out a error message saying "undefined service name libvertd". But I cant remove it using s6-service remove libvertd because that just spits out a generic help message and doesn't change anything. I also couldn't find documentation on https://skarnet.org/software/s6/ or https://skarnet.org/software/s6-rc/ as the command just *doesn't* exist on those pages. (also no man or info page).

I somewhere saw this project being mentioned: https://github.com/svanderburg/nix-processmgmt

That's nice and it showcases how Nix can create a declarative process management atop a script-based imperative manager. How is your experience with it? Also note that there's https://github.com/svanderburg/nix-processmgmt, a manager agnostic processes management framework supporting s6 among others, but your way seems a bit more straightforward.

There's a project still being developed: https://github.com/svanderburg/nix-processmgmt my understanding is that if home-manager would use it (I don't know if there is even plan to do that, it's not the same author), it would be able to work without needing systemd.

(builtins.fetchTarball "https://github.com/svanderburg/nix-processmgmt/archive/6def8584c6b028c922c550859a07b989d21d6f73.tar.gz")

It's not really clear to me what you are asking. Are you maybe looking for nix-processmgmt? (NixCon 2020 talk: https://cfp.nixcon.org/nixcon2020/talk/TW79FU/)