I HIGHLY recommend forking a nix-config that uses flakes, home-manager, and whatever window manager you prefer. Since Nix is so versatile (and the documentation of flakes and home-manager are BAD), I found it absolutely crucial to reuse a well-architected config and slowly modify it in a VM to sketch out my config until it was stable enough to try on a real machine.

I’m a huge fan of Haskell and (for pragmatic purposes) Purescript. Purescript is hard to find much in the way of documentation but it is so similar to Haskell in that the steep learning curve is worth it, IMO. I rarely find a project that I couldn’t accomplish with one or the other or both.

Since I’m the NixOS guy, I recommend GUIX. 😉

This is how we used to do it before we had NixOS with impermanence mode. https://nixos.wiki/wiki/Impermanence