{
  inputs,
  lib,
  ...
}: let
  callPackage = lib.callPackagesWith {
    inherit
      (inputs.nixng.nglib)
      makeSystem
      ;
    nixpkgs = inputs.nixpkgs-stable;
    inherit
      (inputs)
      hydra
      nix
      ;
  };
in {
  flake.nixngConfigurations.hydraPostgreSQL = callPackage ./postgresql.nix {};
  flake.nixngConfigurations.hydra = callPackage ./hydra.nix {};
}