os/modules/koon/host/ark/service/radicale.nix

{ ... }: {
  flake.nixosModules.koonArkServiceRadicale = { ... }: {
    services.radicale = {
      enable = true;
      settings = {
        auth.type = "none";
        server.hosts = [ "0.0.0.0:5232" ];
      };
    };
  };
}