anchor.diff:          "-DWT_CPP_11_MODE=-std=c++11"
           "-DGM_PREFIX=${graphicsmagick}"
           "-DMYSQL_PREFIX=${mysql.connector-c}"
  +        "-DHARFBUZZ_INCLUDE_DIR=${harfbuzz.dev}/include"
           "--no-warn-unused-cli"
         ];
   
  
positive.code:     };
  in {
    wt3 = generic {
      version = "3.4.0";
      sha256 = "0y0b2h9jf5cg1gdh48dj32pj5nsvipab1cgygncxf98c46ikhysg";
    };
  
    wt4 = generic {
  
negative.code: { stdenv, fetchFromGitHub, cmake, boost, pkgconfig, doxygen, qt48Full, libharu
  , pango, fcgi, firebird, mysql, postgresql, graphicsmagick, glew, openssl
  , pcre, harfbuzz
  }:
  
  let
  