fltk-1.1.10-dev.tcz
   fltk-1.1.10.tcz
      libjpeg-turbo.tcz
      libpng.tcz
   libjpeg-turbo-dev.tcz
      libjpeg-turbo-bin.tcz
         libjpeg-turbo.tcz
   libpng-dev.tcz
      libpng-bin.tcz
         libpng.tcz