anchor.diff:          --prefix LD_LIBRARY_PATH : /run/opengl-driver/lib:$instdir/bin:$libPath
       '';
   
  -    stripDebugList = ["lib/unigine/valley/bin"];
  +    stripDebugList = ["${instPath}/bin"];
   
       meta = {
         description = "The Unigine Valley GPU benchmarking tool";
         homepage = "http://unigine.com/products/benchmarks/valley/";
  -      license = stdenv.lib.licenses.unfree; # see also: /nix/store/*-unigine-valley-1.0/lib/unigine/valley/documentation/License.pdf
  +      license = stdenv.lib.licenses.unfree; # see also: $out/$instPath/documentation/License.pdf
         maintainers = [ stdenv.lib.maintainers.kierdavis ];
         platforms = ["x86_64-linux" "i686-linux"];
       };
  
positive.code:     abort "Unsupported platform";
  
  in
    stdenv.mkDerivation {
      name = "unigine-valley-${version}";
  
      src = fetchurl {
  
negative.code:     };
  
      sourceRoot = "Unigine_Valley-${version}";
      instPath = "lib/unigine/valley";
  
      buildInputs = [file makeWrapper];
  
  