{
  inputs.flake-utils.url = "github:/numtide/flake-utils";
  outputs = { self, nixpkgs, flake-utils }:
  flake-utils.lib.eachDefaultSystem
  (system:
  let pkgs = nixpkgs.legacyPackages.${system}; in
  with pkgs; {
    devShells.default = mkShell {
      packages = [ jdk21 nodejs_22];
    };
  });
}