anchor.diff:    makeFlags = "MAN1DIR=share/man/man1";
   
     enableParallelBuilding = true;
  -  
  +
     meta = {
       license = "GPLv2+";
       homepage = "http://doxygen.org/";
  
positive.code:     ++ stdenv.lib.optional (qt != null) qt;
  
    prefixKey = "--prefix ";
    
    configureFlags =
      [ "--dot dot" ]
      ++ stdenv.lib.optional (qt != null) "--with-doxywizard";
  
negative.code:     '';
  
      maintainers = [stdenv.lib.maintainers.simons];
      platforms = if (qt != null) then stdenv.lib.platforms.linux else stdenv.lib.platforms.unix;
    };
  }
  