Title is quite self-explanatory, reason I wonder is because every now and then I think to myself “maybe distro X is good, maybe I should try it at some point”, but then I think a bit more and realise it kind of doesn’t make a difference - the only thing I feel kinda matters is rolling vs non-rolling release patterns.
My guiding principles when choosing distro are that I run arch on my desktop because it’s what I’m used to (and AUR is nice to have), and Debian on servers because some people said it’s good and I the non-rolling release gives me peace of mind that I don’t have to update very often. But I could switch both of these out and I really don’t think it would make a difference at all.
It’s for deployments and managing many environments/machines from a single CLI interface. You can do all sorts of things like push configs based on labels/groups, gather real-time data/logs, scale up/down. It’s great when you have a lot of VPS/VDS/VMs to manage and you’re not using a platform’s specific management tools.
I mainly use NixOS as a barebones backend, keep it as minimal and hardened as I can, then most of the projects/apps that run are done through something like Docker or k8s. So for me, it’s all about managing the underlying servers that provide the tools needed for a project to operate.
The tool itself is undergoing a pretty big redesign at the moment, but you can get the gist of it from the overview in the manual of the commands.
https://hydra.nixos.org/build/115931128/download/1/manual/manual.html#chap-overview