FWIW, and offlist because I am being critical of Arch, and Debian.
The reason we were asking about Arch instructions, is because it's already been packaged there by some nice folk.
I was briefly a maintainer of the original AUR package. I didn't do much but kept it on life support until someone else more competent took over.
We're looking for someone to get a PPA started for Ubuntu, or at least get one started, and then I could perhaps contribute to it. I agree that it should be pretty straightforward.
Yes, for anyone that has already created PPA packages it's probably a breeze but for me I'd have to start from scratch and RTFM and compared to using makepkg on Arch I find it hard to get enthused.
This is the best I can do atm (spread the word a bit)...
https://github.com/oerdnj/deb.sury.org/issues/38
Perhaps if you add a comment it might help Ondre consider it.
Are you interested in working together on an Ubuntu PPA?
I certainly could provide some testing.
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This is the real FWIW part, just ignore if busy...
I gave up on Arch because of their abrupt switch to systemd which broke my Arch servers for the 3rd time in a year (after a move to /usr/lib and all binaries in /usr/bin). I can deal with that but I could never let my clients use Arch on their servers... so being pee'd off with Debian for being too slow with updates I settled on ubuntu as my best choice.
Now I have nginx 1.6, php 5.5, mariadb 5.5 on all servers and even the latest courier-mta thanks to Ondres PPA. Me now 99.9% happy.
The only reason I am at all interested in systemd is because of cockpit.
I'm not against systemd like the Devuan folks but I am wary that such a significant change to major core systems is... yet to be proven (to me) as being a worthwhile change and worthy of the code bloat.
However, a websocket server in front of a system, like systemd, suddenly makes sense of systemd and definitely justifies the monolithic approach of systemd, and even the use of Go to build cockpit itself is also justified for performance (compared to a scripted language.)
My main interest with cockpit, once I can use it on a current ubuntu server, will be to provide an ultra simple PHP+BS4 frontend so the cockpit workflow can be more easily integrated with other PHP apps on a standard LEMP server.