entities/lib.nix

{ lib, entities, ... }:

let
  getHostSite = hostname:
    let site-name = entities.hosts."${hostname}".site;
    in entities.sites."${site-name}";
  getHostDomain = hostname:
    let domain-name = entities.hosts."${hostname}".domain;
    in entities.domains."${domain-name}";
  getHostRealm = hostname: (getHostDomain hostname).gssapi-realm;
  getHostFqdn = hostname:
    let hostDomain = entities.hosts."${hostname}".domain;
    in "${hostname}.${hostDomain}";

in { inherit getHostSite getHostDomain getHostRealm getHostFqdn; }