{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
  };

  outputs = { self, nixpkgs }: {
    # hydraJobs = nixpkgs.lib.mapAttrs (_: value: value.config.system.build.toplevel) self.nixosConfigurations;
    nixosConfigurations = {
      vm = nixpkgs.lib.nixosSystem {
        modules = [
          ./systems/vm/configuration.nix
        ];
      };
    };
  };
}