{ config, pkgs, lib, ... }: let cfg = config.programs.iftop; in { options = { programs.iftop.enable = lib.mkEnableOption "iftop and setcap wrapper for it"; }; config = lib.mkIf cfg.enable { environment.systemPackages = [ pkgs.iftop ]; security.wrappers.iftop = { owner = "root"; group = "root"; capabilities = "cap_net_raw+p"; source = lib.getExe pkgs.iftop; }; }; }