anchor.diff:  
   stdenv.mkDerivation rec {
     pname  = "xfce4-mpc-plugin";
  -  version = "0.4.5";
  +  version = "0.5.2";
   
     src = fetchurl {
       url = "mirror://xfce/src/${category}/${pname}/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.bz2";
  -    sha256 = "1kvgq1pq7cykqdc3227dq0izad093ppfw3nfsrcp9i8mi6i5f7z7";
  +    sha256 = "0q3pysdp85b3c7g3b59y3c69g4nw6bvbf518lnri4lxrnsvpizpf";
     };
   
  -  nativeBuildInputs = [ pkgconfig ];
  -  buildInputs = [ intltool libxfce4util libxfce4ui xfce4-panel
  -    xfconf gtk2 exo ];
  -  
  +  nativeBuildInputs = [
  +    pkgconfig
  +    intltool
  +  ];
  +
  +  buildInputs = [
  +    libxfce4util
  +    libxfce4ui
  +    xfce4-panel
  +    gtk3
  +    exo
  +  ];
  +
     passthru.updateScript = xfce.updateScript {
       inherit pname version;
       attrPath = "xfce.${pname}";
  
positive.code: { stdenv, fetchurl, pkgconfig, intltool, libxfce4util, xfce4-panel, libxfce4ui,
   xfconf, gtk2, exo, xfce }:
  
  let
    category = "panel-plugins";
  
negative.code:   };
  
    meta = with stdenv.lib; {
      homepage = "https://docs.xfce.org/panel-plugins/xfce4-mpc-plugin";
      description = "MPD plugin for Xfce panel";
      platforms = platforms.linux;
      license = licenses.bsd2;
      maintainers = [ ];
    };
  }
  