anchor.diff:    meta = with stdenv.lib; {
       homepage = "https://www.xfce.org/";
       description = "Icons for Xfce";
  +    license = licenses.gpl2Plus;
       platforms = platforms.linux;
       maintainers = [ maintainers.eelco ];
     };
  
positive.code:     sha256 = "1yk6rx3zr9grm4jwpjvqdkl13pisy7qn1wm5cqzmd2kbsn96cy6l";
    };
  
    nativeBuildInputs = [ pkgconfig ];
    buildInputs = [ intltool gtk2 ];
    
    passthru.updateScript = xfce.updateScript {
      inherit pname version;
      attrPath = "xfce.${pname}";
  
negative.code: { stdenv, fetchurl, pkgconfig, intltool, gtk3, xfce }:
  
  let
    category = "art";
  