anchor.diff:      owner = "svsdval";
       repo = pname;
       rev = version;
  -    sha256 = "174ijn8bc306529scd23szvgx1apanm2qmwk4lwmi64rhkm6dapx";
  +    sha256 = "0qzrxqhsxn0h71nfrsi9g78hx3pqm3b8sr6fjq01k4k6dd2nwfam";
     };
   
     propagatedBuildInputs = with pythonPackages; [ opencv3_ midiutil pygame pyopengl ];
  
positive.code:   });
  in pythonPackages.buildPythonApplication rec {
    pname = "video2midi";
    version = "0.4.0.2";
  
    format = "other";
  
  
negative.code:   meta = with lib; {
      description = "Youtube synthesia video to midi conversion tool";
      homepage = src.meta.homepage;
      license = licenses.gpl3Only;
      maintainers = [ ];
      platforms = platforms.linux;
    };
  