gstreamer-dev.tcz
   gstreamer.tcz
      glib2.tcz
         libffi.tcz
   glib2-dev.tcz
      glib2-python.tcz
         glib2.tcz
            libffi.tcz
         python3.6.tcz
            openssl-1.1.1.tcz
            sqlite3.tcz
            gdbm.tcz
            bzip2-lib.tcz
            liblzma.tcz
            readline.tcz
               ncursesw.tcz
            libffi.tcz
      libffi-dev.tcz
         libffi.tcz
   gsl2-dev.tcz
      gsl2.tcz
   gmp-dev.tcz
      gmp.tcz