libarchive-dev.tcz
   libarchive.tcz
      expat2.tcz
      openssl-1.0.0.tcz
      bzip2-lib.tcz
   expat2-dev.tcz
      expat2.tcz
   openssl-1.0.0-dev.tcz
      openssl-1.0.0.tcz
   bzip2-lib-dev.tcz