coder-templates/nix-kubernetes/variables.nix

{...}: {
  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";
      };
    };
  };
}