anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "snapcast";
  -  version = "0.23.0";
  +  version = "0.24.0";
   
     src = fetchFromGitHub {
       owner  = "badaix";
       repo   = "snapcast";
       rev    = "v${version}";
  -    sha256 = "0183hhghzn0fhw2qzc1s009q7miabpcf0pxaqjdscsl8iivxqknd";
  +    sha256 = "13yz8alplnqwkcns3mcli01qbyy6l3h62xx0v71ygcrz371l4g9g";
     };
   
     nativeBuildInputs = [ cmake pkg-config boost170.dev ];
  
positive.code:     description = "Synchronous multi-room audio player";
      homepage = "https://github.com/badaix/snapcast";
      maintainers = with maintainers; [ fpletz ];
      license = licenses.gpl3;
    };
  }
  
negative.code: 
    aixlog = dependency {
      name    = "aixlog";
      version = "1.5.0";
      sha256  = "09mnkrans9zmwfxsiwgkm0rba66c11kg5zby9x3rjic34gnmw6ay";
    };
  
    popl = dependency {
  