{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

  outputs = {nixpkgs, ...}: let
    forAllSystems =
      function:
      nixpkgs.lib.genAttrs nixpkgs.lib.systems.flakeExposed (
        system: function nixpkgs.legacyPackages.${system}
      );
  in {
    systems = [ "x86_64-linux" ];


    packages = forAllSystems (pkgs: {
      default = pkgs.mkShell {
        nativeBuildInputs = with pkgs; [
          babashka
          clojure
          leiningen
        ];
      };
    });
  };
}