I use Guix

edit: I do feel norawibb’s point, the slippery mutability of Void is something I am a lot less comfortable with than I used to be. Apparently Guix has spoiled me.

Glad to hear it! Feel free to message me if you have any questions, though I’m not a Guix expert by any means, so the IRC channel on libera.chat is probably your best bet.

btw: you can also install guix as a standalone package manager on top of any other GNU/Linux distribution just like nix, and it can also use the nonguix channel.

Yes you can install non-free software on Guix. By default Guix only ships with non-free software in its iso and standard repo, but there is a nonguix channel (read repo) which comes with all the non-free software I’ve ever needed.

It’s very easy to add channels to Guix. Flatpak and Nix are also available on Guix if you’d prefer to use those ways of getting non-free software.

I quite enjoy it!

Being able to rollback any change I make to the system, either package changes or system configuration, makes it completely unbreakable and provides great peace of mind. It means I can fully enjoy its rolling-release nature without worrying.

Having my entire system configuration declared in a single, robust programming language (Guile) across a small number of files makes it very easy to understand and just stick into source control to reproduce.

Being able to hack on it in a lisp (scheme) is the cherry on top, along with the great emacs integration. I would highly recommend it to any lisp/emacs/gnu enthusiasts.