libwebp-dev.tcz
   libwebp.tcz
      libtiff.tcz
         libjpeg-turbo.tcz
         liblzma.tcz  
      libpng.tcz
      giflib.tcz 
   giflib-dev.tcz 
   libpng-dev.tcz 
   libtiff-dev.tcz 
   libjpeg-turbo-dev.tcz