anchor.diff:      libxslt
       docbook_xml_dtd_42
       docbook_xml_dtd_43
  -    docbook_xml_ebnf_dtd
       docbook_xml_xslt
       nxml
     ;};
  
positive.code: 
    body = [
      i686LinuxPkgs
      powerpcDarwinPkgs
    ];
  }
  
negative.code:     libxslt
      docbook_xml_dtd_42
      docbook_xml_dtd_43
      docbook_xml_xslt
      subversion
      pan
  