util-linux-dev.tcz
   util-linux.tcz
      readline.tcz
         ncursesw.tcz
      udev-lib.tcz
         glib2.tcz
            libffi.tcz
   readline-dev.tcz
      readline.tcz
         ncursesw.tcz
      ncursesw-dev.tcz
         ncursesw.tcz
   udev-lib.tcz
      glib2.tcz
         libffi.tcz