{ lib, ... }: {
  # Build this image with:
  # nix build .#nixosConfigurations.nixos-rpi4-img.config.system.build.sdImage
  
  # nixpkgs.crossSystem.system = "armv7l-linux";
  networking.hostName = "nixos-rpi4-img";
  networking.firewall.allowedTCPPorts = [ 22 ];

  # Allow passworded ssh for setup
  services.openssh = {
    enable = true;
    openFirewall = false;
    settings = {
      PermitRootLogin = "no";
      PasswordAuthentication = lib.mkForce true;
    };
  };
}