anchor.diff: -{ fetchurl, stdenv, pkgconfig, python, file, bc, fetchpatch
  +{ fetchurl, lib, mkDerivation, pkgconfig, python, file, bc, fetchpatch
   , qtbase, qtsvg, hunspell, makeWrapper #, mythes, boost
   }:
   
  -stdenv.mkDerivation rec {
  +mkDerivation rec {
     version = "2.3.0";
     pname = "lyx";
   
  
positive.code:     })
    ];
  
    meta = with stdenv.lib; {
      description = "WYSIWYM frontend for LaTeX, DocBook";
      homepage = http://www.lyx.org;
      license = licenses.gpl2Plus;
  
negative.code:   doCheck = true;
  
    # python is run during runtime to do various tasks
    qtWrapperArgs = [
      " --prefix PATH : ${python}/bin"
    ];
  
    patches = [
      (fetchpatch {
  