I have an (yet another) understanding issue with #nix X) , I think I've a functional (sic) understanding of what a flake.nix is (or at least, does / provides), but on the other hand I've no idea what "regular" nix files are used for / how they are different. I have the feeling that I can split my flake.nix file into several nix files + small flake.nix "importing" them (how?), and I'm also under the impression this is not their only use, nor their main one 馃槉 . If someone has pointers for me <3