# spell-checking { config, lib, options, pkgs, ... }: let cfg = config.my.system.spell-check; in { options.my.system.spell-check = with lib; { enable = mkEnableOption "spell-check configuration"; }; config = lib.mkIf cfg.enable { environment.systemPackages = with pkgs; [ aspell aspellDicts.de aspellDicts.en aspellDicts.en-computers aspellDicts.en-science ]; }; }