{
  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1";
  outputs =
    { self, nixpkgs }:
    let
      systems = [
        "x86_64-linux"
      ];
      forAllSystems = fn: nixpkgs.lib.genAttrs systems (system: fn nixpkgs.legacyPackages.${system});
    in
    {
      #packages = forAllSystems (pkgs: {
      #  default = pkgs.callPackage ./package.nix { };
      #});

      checks = forAllSystems (pkgs: {
        # todo add tests
        devShell = self.devShells.${pkgs.stdenv.hostPlatform.system}.default;
      }
      # future nixos test
      # // pkgs.lib.optionalAttrs pkgs.stdenv.isLinux {
      #   nixos-module = pkgs.testers.runNixOSTest (import ./nixos-test.nix self);
      # }
      );

      devShells = forAllSystems (pkgs: {
        default = pkgs.mkShell {
          packages = with pkgs; [
            # TODO populate devshell for the project
          ];
        };
      });

      # TODO export module
      # nixosModules = {
      #   default =
      #     {
      #       config,
      #       lib,
      #       pkgs,
      #       ...
      #     }:
      #     {
      #       imports = [ ./nixos-module.nix ];
      #       services.TODSERVICENAME.package =
      #         lib.mkDefault
      #           self.packages.${pkgs.stdenv.hostPlatform.system}.default;
      #     };
      # };
    };
}