I'm going to try out Guix System (formerly GuixSD) as a server operating system. I love the concept of an immutable OS like Nix / Guix, but when I tried NixOS several years ago I hated how unpolished everything was: Especially nix-flakes, which seem to be simultaneously "recommended! you won't want to go back to channels!" and also "unstable and unsupported: Use at your own risk!", with no indications that anyone in the ecosystem saw this as a problem, or at least expected it to be fixed soon. And, indeed, nix-flakes remains in the same state ~4 years later. I also hated the nix language, which seems to have almost all of the downsides of lua and haskell combined, without any of the nice things about either of those languages.

I'm hopeful that Guix is saner / at least less weirdly fine with everything being in perpetual limbo. I already know I like Guile, so that's a start.