anchor.diff:  in
   stdenv.mkDerivation rec {
     pname = "ns-3";
  -  version = "30";
  +  version = "32";
   
     src = fetchFromGitLab {
       owner = "nsnam";
       repo   = "ns-3-dev";
       rev    = "ns-3.${version}";
  -    sha256 = "0smdi3gglmafpc7a20hj2lbmwks3d5fpsicpn39lmm3svazw0bvp";
  +    sha256 = "158yjhsrmslj1q4zcq5p16hv9i82qnxx714l7idicncn0wzrfx7k";
     };
   
     nativeBuildInputs = [ wafHook ];
  
positive.code: 
  # All modules can be enabled by choosing 'all_modules'.
  # we include here the DCE mandatory ones
  , modules ? [ "core" "network" "internet" "point-to-point" "fd-net-device" "netanim"]
  , lib
  }:
  
  
negative.code: 
    postPatch = ''
      patchShebangs doc/ns3_html_theme/get_version.sh
      # FIX/Remove when https://github.com/NixOS/nixpkgs/pull/69310 gets merged
      sed -i 's/program.ns3_module_dependencies.copy()/program.ns3_module_dependencies[:]/g' wscript
    '';
  
    wafConfigureFlags = with stdenv.lib; [
  