let pkgs = import <nixpkgs> {
  crossSystem = (import <nixpkgs/lib>).systems.examples.arm-embedded;
};
in pkgs.callPackage ({mkShell, dtc, python37}: mkShell {
  nativeBuildInputs = [
    dtc
    (python37.withPackages(ps: with ps; [ libfdt ]))
  ];
}) {}