When you upgrade NixOS there are always warnings on anything deprecated telling you what to do.
Yeah, if any of that is even remotely true then something is horribly wrong with your system.
Most of the time the deprecations require no action on my part, I simply rather keep things tidy and make the warnings go away.
> In a way, it’s reassuring to see that niche Linux distributions have changed so little in the decade since I last used one.
You are misunderstanding what I am saying. The situation is very different. There are still Linux/Wayland/NVidia/Whatever issues, but configuring NixOS is not among them.
Here to confirm that you can usually ignore those warnings for a year or more, hahaha.