$ guix download http://www.iana.org/time- zones/repository/releases/tzcode2013d.tar.gz
yields: /nix/store/4iavpv6axr15l1z35yyccfvn0l1vx7ba-tzcode2013d.tar.gz 1dh7nzmfxs8fps4bzcd2lz5fz24zxy2123a99avxsk34jh6bk7id But the hash in base.scm is 13xd30ngwhqmj7w216ghd5knvg047hzpc0xca5l297g5cwb62hza . Andreas
