{
  description = "Basic project";
  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
  outputs =
    { nixpkgs }:
    let
      forAllSystems = nixpkgs.lib.genAttrs [
        "x86_64-linux"
        "x86_64-darwin"
        "aarch64-linux"
        "aarch64-darwin"
      ];
    in
    {
      devShells = forAllSystems (
        system:
        let
          pkgs = import nixpkgs { inherit system; };
        in
        {
          default = pkgs.mkShell { buildInputs = with pkgs; [ nixfmt-rfc-style ]; };
        }
      );
    };
}