21:35 <ashkitten> infinisil: do you know why building my nixos-config downloads a nixpkgs tarball at the start even though i'm explicitly using a nixpkgs checkout as a submodule?

21:35 <infinisil> ashkitten: Yeah, nixus itself uses another pinned nixpkgs: https://github.com/Infinisil/nixus/blob/master/nixpkgs.nix

21:36 <ashkitten> why's that?

21:36 <infinisil> This is used for dependencies that aren't machine specific. E.g. the toplevel deployment script, or the module system

21:37 <infinisil> In particular, if I'm depending on module system features from a specific nixpkgs version, I'd update that

21:38 <ashkitten> i see

21:38 <infinisil> (and this might happen soon with something like https://github.com/NixOS/nixpkgs/pull/98952, which fixes an issue related to this)