{ inputs, self, ... }:
{
  imports = [
    inputs.nix-topology.flakeModule
  ];

  # todo : create apps to make live easier
  # nix build .#topology.x86_64-linux.config.output

  perSystem =
    {
      system,
      lib,
      pkgs,
      ...
    }:
    {

      apps.topology = {
        type = "app";
        program = pkgs.writers.writeBashBin "topology" ''
          ${lib.getExe pkgs.nix} build ${self}#topology.${system}.config.output
          echo "result"
          ls -lah ./result
          ls -lah ./result/
        '';
      };

      topology.pkgs = import inputs.nixpkgs {
        inherit system;
        overlays = [ inputs.nix-topology.overlays.default ];
      };
      topology.modules = [
        {
          # Inline module to inform topology of your existing NixOS hosts.
        }
      ];
    };
}