# copied straight from https://github.com/hercules-ci/flake-parts/blob/main/modules/nixosConfigurations.nix
{ lib, flake-parts-lib, ... }:
let
  inherit (lib)
    mkOption
    types
    literalExpression
    ;
  inherit (flake-parts-lib)
    mkSubmoduleOptions
    ;
in
{
  options = {
    flake = mkSubmoduleOptions {
      nixngConfigurations = mkOption {
        type = types.lazyAttrsOf types.raw;
        default = { };
        description = ''
          Instantiated NixNG configurations.
          `nixngConfigurations` is for specific machines. If you want to expose
          reusable configurations, add them to [`nixosModules`](#opt-flake.nixosModules)
          in the form of modules (no `lib.nixosSystem`), so that you can reference
          them in this or another flake's `nixngConfigurations`.
        '';
      };
    };
  };
}