[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.