anchor.diff:    src = fetchurl {
       url = "mirror://sourceforge/kid3/kid3/${version}/${name}.tar.gz";
       hashOutput = false;
  -    sha256 = "ab1f622e26e5d672eb078f93abdb51f1a2667a748be8a211fcd91d18e0db4de0";
  +    sha256 = "0d703b0b8c2538eba1f8f540a87e13a4bf61f715ef9cd1253f18417ebb096404";
     };
   
     nativeBuildInputs = [
  
positive.code: }:
  
  let
    inherit (stdenv.lib)
      boolOn;
  
    version = "3.4.4";
  in
  stdenv.mkDerivation rec {
    name = "kid3-${version}";
  
negative.code:     };
    };
  
    meta = with lib; {
      description = "A simple and powerful audio tag editor";
      homepage = http://kid3.sourceforge.net/;
      license = licenses.gpl2Plus;
  