anchor.diff:      homepage = http://www.gpsbabel.org/;
   
       license = "GPLv2+";
  +
  +    maintainers = [ stdenv.lib.maintainers.ludo ];
  +    platforms = stdenv.lib.platforms.gnu;         # arbitrary choice
     };
   }
  
positive.code: 
      But FOP isn't packaged yet.  */
  
    configureFlags = "--with-zlib=system";
  
    meta = {
      description = "GPSBabel, a tool to convert, upload and download data from GPS and Map programs";
  
negative.code: { fetchurl, stdenv, zlib, expat, which }:
  
  let version = "1.4.3"; in
  stdenv.mkDerivation {
    name = "gpsbabel-${version}";
  
    src = fetchurl {
      # gpgbabel.org makes it hard to get the source tarball automatically, so
      # get it from elsewhere.
      url = "mirror://debian/pool/main/g/gpsbabel/gpsbabel_${version}.orig.tar.gz";
      sha256 = "1s31xa36ivf836h89m1f3qiaz3c3znvqjdm0bnh8vr2jjlrz9jdi";
    };
  
    # FIXME: Would need libxml2 for one of the tests, but that in turns require
    # network access for the XML schemas.
    buildInputs = [ zlib expat which ];
  
    /* FIXME: Building the documentation, with "make doc", requires this:
  
  