anchor.diff:  let
     ell = fetchgit {
        url = https://git.kernel.org/pub/scm/libs/ell/ell.git;
  -     rev = "0.14";
  -     sha256 = "13jlmdk47pscmfs3c12awfwr3m6ka4fh6fyr9cl1bmqdpwqmmmk6";
  +     rev = "0.15";
  +     sha256 = "1jwk5gxcs964ddca9asw6fvc4h9q8d2x1y3linfi11b5vf30bghn";
     };
   in stdenv.mkDerivation rec {
     name = "iwd-${version}";
  -  version = "0.11";
  +  version = "0.12";
   
     src = fetchgit {
       url = https://git.kernel.org/pub/scm/network/wireless/iwd.git;
       rev = version;
  -    sha256 = "0q79rdj3h16xdf0g2jdsvb2141z36z89vgzq0qn31pxzhgxdgf7j";
  +    sha256 = "156zq3zqa2vfmvy3yv9lng23mhrhlgwh0p2x3fcn10nkks9q89pn";
     };
   
     nativeBuildInputs = [
  
positive.code:   '';
  
    postFixup = ''
      substituteInPlace $out/usr/share/dbus-1/system-services/net.connman.iwd.service \
                        --replace /bin/false ${coreutils}/bin/false
    '';
  
negative.code:     "--with-dbus-busdir=$(out)/usr/share/dbus-1/system-services/"
      "--with-systemd-unitdir=$(out)/lib/systemd/system/"
      "--localstatedir=/var/"
      "--enable-wired"
    ];
  
    postUnpack = ''
  