{ lib }:
let
  endpointFields = address: { inherit address; };

  collectFleetEndpoints = hosts:
    lib.concatMapAttrs (
      hostName: host:
      lib.mapAttrs' (
        entryName: address:
        let
          endpointName = if entryName == "self" then hostName else "${hostName}-${entryName}";
        in
        lib.nameValuePair endpointName (endpointFields address)
      ) (host.config.registry.address.${hostName} or { })
    ) hosts;
in
{
  inherit collectFleetEndpoints endpointFields;
}