{lib, ...}: let
  # gets list of files from a directory
  getFiles = folder:
    lib.attrsets.mapAttrsToList (name: type: "${folder}/${name}") (builtins.readDir folder);

  # gets custom set of root certs
  certs = getFiles ../files/certs;

  # set of ssh keys
  sshKeys =
    builtins.filter
    (path: lib.strings.hasSuffix "pub" path) (getFiles ../files/keys);

  # set of gpg keys
  gpgKeys =
    builtins.filter
    (path: lib.strings.hasSuffix "asc" path) (getFiles ../files/keys);
in {
  inherit getFiles;
  inherit certs;
  inherit sshKeys;
  inherit gpgKeys;
}