anchor.diff:  with stdenv.lib;
   stdenv.mkDerivation rec {
     name = "navit-${version}";
  -  version = "0.5.2";
  +  version = "0.5.3";
   
     src = fetchFromGitHub {
       owner = "navit-gps";
       repo = "navit";
       rev = "v${version}";
  -    sha256 = "11w85rlx612lws4s3q36li4iqib9b35v94kzf2zh9g1aphwqh2qa";
  +    sha256 = "071drvqzxpxbfh0lf0lra5a97rv8ny40l96n9xl0dx0s8w30j61i";
     };
   
     sample_map = fetchurl {
  
positive.code:   # we choose only cmdline and speech-dispatcher speech options.
    # espeak builtins is made for non-cmdline OS as winCE
    cmakeFlags = [
      "-DSAMPLE_MAP=n " "-DCMAKE_BUILD_TYPE=RelWithDebInfo"
      "-Dspeech/qt5_espeak=FALSE" "-Dsupport/espeak=FALSE"
    ];
  
  
negative.code:   libPath = stdenv.lib.makeLibraryPath ([ stdenv.cc.libc ] ++ buildInputs );
    postFixup =
    ''
      find "$out/lib" -type f -name "*.so" -exec patchelf --set-rpath $libPath {} \;
  
      wrapProgram $out/bin/navit \
        --prefix PATH : ${makeBinPath (
  