{
  lib,
  ...
}:
let
  inherit (lib) mkOption types;
in
{
  options = {
    host = mkOption {
      type = types.str;
      description = "name of the host to deploy to";
    };
    targetSystem = mkOption {
      type = types.str;
      description = "name of the host to deploy to";
    };
    sshOpts = mkOption {
      description = "Extra SSH options (`-o`) to use.";
      type = types.listOf types.str;
      default = [ ];
      example = "ConnectTimeout=60";
    };
    httpBackend = mkOption {
      description = "environment variables to configure the TF HTTP back-end, see <https://developer.hashicorp.com/terraform/language/backend/http#configuration-variables>";
      type = types.attrsOf (types.either types.str types.int);
    };
  };
}