anchor.diff:    srcs = {
       foxtrot = fetchbzr {
         url = "lp:foxtrotgps";
  -      rev = "329";
  -      sha256 = "0fwgnsrah63h1xdgm5xdi5ancrz89shdp5sdzw1qc1m7i9a03rid";
  +      rev = "331";
  +      sha256 = "sha256-/kJv6a3MzAzzwIl98Mqi7jrUJC1kDvouigf9kGtv868=";
       };
       screenshots = fetchbzr {
         url = "lp:foxtrotgps/screenshots";
  
positive.code:   ];
  
    postUnpack = ''
    cp -R ${srcs.screenshots} $sourceRoot/doc/screenshots
    chmod -R u+w $sourceRoot/doc/screenshots
    '';
  
    preConfigure = ''
    intltoolize --automake --copy --force
    '';
  
    meta = with lib; {
  
negative.code:   };
  in stdenv.mkDerivation rec {
    pname = "foxtrotgps";
    version = "1.2.2+331";
  
    # Pull directly from bzr because gpsd API version 9 is not supported on latest release
    src = srcs.foxtrot;
  