anchor.diff:  
     meta = with stdenv.lib; {
       description = "Print, scan and fax HP drivers for Linux";
  -    homepage = http://hplipopensource.com/;
  +    homepage = https://developers.hp.com/hp-linux-imaging-and-printing;
       license = if withPlugin
         then licenses.unfree
         else with licenses; [ mit bsd2 gpl2Plus ];
  
positive.code:       --with-mimedir=$out/etc/cups
        --enable-policykit
        --disable-qt4
        ${stdenv.lib.optionals withQt5 "--enable-qt5"}
      "
  
      export makeFlags="
  
negative.code:     dbus
      net_snmp
      openssl
      zlib
    ];
  
    nativeBuildInputs = [
  