I’m not saying it as a source of pride. It’s incredibly annoying to me that I need to edit a file in order to manage my system instead of having a GUI like KDE’s to manage all the settings. On NixOS, there’s just no way around that at the moment.
Unfortunately, I don’t know another somewhat sane declarative distro. Do you? (No, not GUIX. That’s just NixOS with a ton more brackets and less packages).