{
  # deadnix: skip # enable <den/brackets> syntax for demo.
  __findFile ? __findFile,
  den,
  ...
}:
{
  # Lets also configure some defaults using aspects.
  # These are global static settings.
  den.default = {
    nixos.system.stateVersion = "25.11";
    homeManager.home.stateVersion = "25.11";
  };

  # These are functions that produce configs
  den.default.includes = [
    # Automatically create the user on host.
    <den/define-user>
    <den/hostname>

    # Include fancy nix settings
    <my/nix>

    # easy access to per-sytem inputs' and self' in modules
    den._.inputs'
    den._.self'
  ];
}