inputs: rec {
  hosts = {
    aqua = import ./aqua inputs;
    arcadia = import ./arcadia inputs;
    x1carbon = import ./x1carbon inputs;
    fungus = import ./fungus inputs;
  };
  nixos = builtins.mapAttrs (_: host: host.nixos) hosts;
  home-manager = builtins.foldl' (a: b: a // b) { } (
    map (h: h.home-manager) (builtins.attrValues hosts)
  );
}