{ packages }:
{ exports', ... }:
{
  _class = "clan.service";
  manifest.name = "clan-core/static-hosts";
  manifest.description = "This is a test";

  roles.default = { };

  perMachine =
    { machine, roles, ... }:
    {
      nixosModule =
        { lib, ... }:
        let

          networks = lib.filter (n: n.networking != null) (builtins.attrValues exports'.instances);

          sortedNetworks = lib.lists.sort (p: q: p.priority < q.priority) networks;

          hostInNetwork = host: network: network ? ${host};

          bestHost =
            host:
            (lib.findFirst (network: hostInNetwork host network) null sortedNetworks)
            .networking.peers.${host}.host.plain or null;

        in
        {
          networking.extraHosts = map (host: "${bestHost host} ${host}.clan") (
            lib.attrNames roles.default.machines
          );
        };
    };
}