anchor.diff:      "--enable-sap"
       "--enable-health"
       "--enable-mesh"
  +    "--enable-midi"
  +    "--enable-btpclient"
       "--enable-manpages"
       "--enable-sixaxis"
     ];
  
positive.code:   passthru = {
      srcVerification = fetchurl {
        failEarly = true;
        pgpsigUrl = "${baseUrl}/${name}.tar.sign";
        pgpDecompress = true;
        pgpKeyFingerprint = "E932 D120 BC2A EC44 4E55  8F01 06CA 9F5D 1DCF 2659";
        inherit (src) urls outputHash outputHashAlgo;
      };
    };
  
  
negative.code:   baseUrl = "mirror://kernel/linux/bluetooth";
  in
  stdenv.mkDerivation rec {
    name = "bluez-5.50";
  
    src = fetchurl {
      url = "${baseUrl}/${name}.tar.xz";
      hashOutput = false;
      sha256 = "5ffcaae18bbb6155f1591be8c24898dc12f062075a40b538b745bfd477481911";
    };
  
    buildInputs = [
      alsa-lib
      dbus
      ell
      glib
      json-c
      libical
  