{ config, lib, ... }: { nix = { settings = { substituters = [ "https://cache.nixos.org/" "https://nix-community.cachix.org" "http://s0.koi-bebop.ts.net:5000" ]; trusted-public-keys = [ "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=" "s0.koi-bebop.ts.net:OjbzD86YjyJZpCp9RWaQKANaflcpKhtzBMNP8I2aPUU=" ]; # Allow substituters to be offline # This isn't exactly ideal since it would be best if I could set up a system # so that it is an error if a derivation isn't available for any substituters # and use this flag as intended for deciding if it should build missing # derivations locally. See https://github.com/NixOS/nix/issues/6901 fallback = true; }; }; }