anchor.diff:      homepage = http://catb.org/gpsd/;
       license = "BSD-style";
       platforms = platforms.linux;
  -    maintainers = [ maintainers.bjornfor ];
  +    maintainers = with maintainers; [ bjornfor rasendubi ];
     };
   }
  
positive.code: 
    # TODO: the udev rules file and the hotplug script need fixes to work on NixOS
    installPhase = ''
      scons install
      mkdir -p "$out/lib/udev/rules.d"
      scons udev-install
    '';
  
    postInstall = "wrapPythonPrograms";
  
    meta = with stdenv.lib; {
      description = "GPS service daemon";
  
negative.code: { fetchurl, stdenv, scons, pkgconfig, dbus, dbus_glib
  , ncurses, libX11, libXt, libXpm, libXaw, libXext
  , libusb1, docbook_xml_dtd_412, docbook_xsl, bc
  , libxslt, xmlto, gpsdUser ? "gpsd", gpsdGroup ? "dialout"
  , pythonPackages
  }:
  
  # TODO: put the X11 deps behind a guiSupport parameter for headless support
  
  stdenv.mkDerivation rec {
  