# flake.nix
{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
  outputs = { self, nixpkgs, ... }:
    let
      system = "x86_64-linux";
      test = nixpkgs.lib.nixosSystem {
        inherit system;
        modules = [ 
          ./configuration.nix 
        ];
      };
    in {
      # Use `flake-config#test` with:
      # nixos-rebuild --flake .#test build-vm
      nixosConfigurations.test = test;

      # Optional: expose VM script for `nix run .#vms.test`
      vms.test = test.config.system.build.vm;
    };
}