{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem(system: let
      pkgs = nixpkgs.legacyPackages.${system};
    in {
      # packages.default = pkgs.callPackage ./default.nix {};
      devShells.default = import ./shell.nix { inherit pkgs; };
    });
}