anchor.diff:  { lib, stdenv, fetchurl, pkg-config, zlib, shadow, libcap_ng
  -, ncurses ? null, pam, systemd ? null, minimal ? false }:
  +, ncurses ? null, pam, systemd ? null
  +, minimal ? false
  +, nlsSupport ? !minimal
  +}:
   
   stdenv.mkDerivation rec {
     pname = "util-linux";
  
positive.code:   doCheck = false; # "For development purpose only. Don't execute on production system!"
  
    postInstall = lib.optionalString minimal ''
      rm -rf $out/share/{locale,doc,bash-completion}
    '';
  
    enableParallelBuilding = true;
  
negative.code:     "--enable-fs-paths-default=/run/wrappers/bin:/run/current-system/sw/bin:/sbin"
      "--disable-makeinstall-setuid" "--disable-makeinstall-chown"
      "--disable-su" # provided by shadow
      (lib.enableFeature nlsSupport "nls")
      (lib.withFeature (ncurses != null) "ncursesw")
      (lib.withFeature (systemd != null) "systemd")
      (lib.withFeatureAs (systemd != null)
  