{
  pkgs,
  nixpkgs,
  nixng,
  globals,
  ...
}: {
  mkNixNGImage = name: file: let
    stream =
      (import file {
        inherit nixpkgs nixng globals;
        inherit (nixng) nglib;
      })
      .config
      .system
      .build
      .ociImage
      .stream;
  in
    pkgs.stdenv.mkDerivation {
      name = "${name}.tar";
      src = stream;
      dontUnpack = true;
      buildPhase = ''
        $src > $out
      '';
    };

  nixSnapshotterRef = imagePath: "nix:0${imagePath}";
}