anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "libxmlb";
  -  version = "0.1.14";
  +  version = "0.1.15";
   
     outputs = [ "out" "lib" "dev" "devdoc" "installedTests" ];
   
  
positive.code: 
    meta = with stdenv.lib; {
      description = "A library to help create and query binary XML blobs";
      homepage = https://github.com/hughsie/libxmlb;
      license = licenses.lgpl21Plus;
      maintainers = with maintainers; [ jtojnar ];
      platforms = platforms.linux;
  
negative.code:     owner = "hughsie";
      repo = "libxmlb";
      rev = version;
      sha256 = "1mb73pnfwqc4mm0lm16yfn0lj495h8hcciprb2v6wgy3ifnnjxib";
    };
  
    patches = [
  