{...}: {
  variable = {
    namespace = {
      type = "string";
      description = "Kubernetes namespace (must exist prior to creating workspaces)";
    };
    arch = {
      type = "string";
      description = "Architecture of the host";
      validation = {
        condition = ''''${contains(["amd64", "arm64"], var.arch)}'';
        error_message = "Invalid architecture selected";
      };
    };
    cpu_request = {
      type = "string";
      description = "CPU request to apply to workspaces. Kubernetes Notation (eg. 500m)";
      default = "0";
    };
    memory_request = {
      type = "string";
      description = "Memory request to apply to workspaces. Kubernetes Notation (eg. 1Gi)";
      default = "0";
    };
  };
}