{ config, lib, ... }:

let

in
{
  options.enableExtraSubstituters = lib.mkEnableOption "Enable extra substituters";

  config = lib.mkMerge [
    {
      enableExtraSubstituters = lib.mkDefault true;
    }
    (lib.mkIf config.enableExtraSubstituters {
      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="
          ];
        };
      };
    })
  ];
}