{ config, lib, ... }: { nix.settings = { substituters = [ "https://chaotic-nixpkgs.cachix.org" ]; trusted-public-keys = [ "chaotic-nixpkgs.cachix.org-1:xm/PZVLgwIlMc8K5+ZxGIkEXovfL9Bll5HolvzN1wIQ=" ]; }; }