libarchive-dev.tcz
   libarchive.tcz
      expat2.tcz
      openssl.tcz
      bzip2-lib.tcz
   expat2-dev.tcz
      expat2.tcz
   openssl-dev.tcz
      openssl.tcz
   bzip2-dev.tcz
      bzip2.tcz
         bzip2-lib.tcz