{
  description = "A very basic flake";

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

  outputs =
    {
      self,
      nixpkgs,
      utils,
    }:
    utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
      in
      {
        devShell = pkgs.mkShell { buildInputs = with pkgs; [ ]; };

        packages.${system} = {
          inherit (pkgs) hello;
          default = self.packages.hello;
        };
      }
    );
}