gstreamer0.10-dev.tcz
   gstreamer0.10.tcz
      glib2.tcz
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         libffi.tcz
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   glib2-dev.tcz
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         gamin.tcz
         libffi.tcz
      gamin-dev.tcz
         gamin.tcz
      libffi-dev.tcz
         libffi.tcz
   libxml2-dev.tcz
      libxml2.tcz
         liblzma.tcz
      liblzma-dev.tcz
         liblzma.tcz