{ ... }: {
  nixpkgs.crossSystem.system = "armv7l-linux";
  imports = [
    <nixpkgs/nixos/modules/installer/sd-card/sd-image-armv7l-multiplatform.nix>
  ];
  # put your own configuration here, for example ssh keys:
  users.users.root.openssh.authorizedKeys.keys = [
     "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAwn26AL26A0Yt4sE+rm5//p8QKuNGI/ezAdNJX9QAjRErjEWnsiUr+w0O78912A2RCakdZYZJo6p1RuLYq6u27mjdLU1hhJs1t/ZFUjevKP33Q8hjptnV3s/G/iPfl0h4kQDStNySgJJ7cGh8Dhj906BrQbns3U2WgVZWwhaYvFiSjZA9UWwvB+n/jN9YeSShfdqGYw8/WlFZiOZrz4poO6/DUOAiztvzrpaQFDtI2f9TdGL1ttvYk04jDCRO1cM1LjgWir+WToalgyAqxfgnlvbv8g16RQo//8qhRdMqQPJKnIRewy/VLN1VbNbO2+z5f6BYbYlfioDXmuzMb86jfQ=="
  ];
}