{ description = "Extremely basic flake";
  inputs = {
    nixpkgs.url = github:nixos/nixpkgs/nixos-unstable;
    flake-utils.url = github:numtide/flake-utils;
  };
  outputs = { self, nixpkgs, flake-utils}:
  flake-utils.lib.eachDefaultSystem (system:
  let pkgs = import nixpkgs { inherit system; };
  in {
    packages = rec {
      default = throw "put derivation information here";
    };

    devShells.default = pkgs.mkShell {
      buildInputs = with pkgs; [
        (throw "put packages here")
      ];
    };

  });
}