upstream is in the process of renaming to `hickory-dns`.
a consequence of this is that the main binary has been renamed from
`trust-dns` to `hickory-dns` and the repository has been moved (though
for the time being the old repo is still usable on account that it
redirects to the new one).
see: <https://bluejekyll.github.io/blog/posts/announcing-hickory-dns/>
[trust-dns](https://github.com/bluejekyll/trust-dns/) is a Rust-based
DNS client/server/resolver. the server uses .zone files that are largely
compatible with bind. i've had a server deployed to `ns{1,2}.uninsane.org`
for about a week using this derivation: seems to be stable enough for
casual use.
this package also ships a DNS client and a resolver. BIND also ships a
dig-like client but lives in pkgs/servers/dns. so i'm replicating that
convention.
