anchor.diff:        buildInputs = [
           boost doxygen qt48Full libharu
           pango fcgi firebird libmysqlclient postgresql graphicsmagick glew
  -        openssl pcre
  +        openssl pcre harfbuzz
         ];
   
         cmakeFlags = [
  
positive.code:   };
  
    wt4 = generic {
      version = "4.2.0";
      sha256 = "0zrrdjz0sa8hrmybjp4aap1lcqcqvsicd7dj49zj1m5k8gnfpm4v";
    };
  }
  
negative.code:         "-DWT_WRASTERIMAGE_IMPLEMENTATION=GraphicsMagick"
          "-DGM_PREFIX=${graphicsmagick}"
        ]
        ++ lib.optional (libmysqlclient != null)
          "-DMYSQL_PREFIX=${libmysqlclient}";
  
  