{
  inputs = {
    flake-utils = {
      type = "github";
      owner = "numtide";
      repo = "flake-utils";
      ref = "master";
    };
    naersk = {
      type = "github";
      owner = "nmattia";
      repo = "naersk";
      ref = "master";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };
  outputs = { self, nixpkgs, flake-utils, naersk }: let
    supportedSystems = ["aarch64-linux" "x86_64-linux"];
    forAllSystems = f: flake-utils.lib.eachSystem supportedSystems f;
  in {
    nixosModules.default = import ./configuration.nix self;
  } // forAllSystems (system: let
    pkgs = nixpkgs.legacyPackages.${system};
    naersk-lib = naersk.lib.${system}.override {
      inherit (pkgs) rustc cargo;
    };
  in {
    packages = {
      kittybox = pkgs.callPackage ./kittybox.nix { inherit naersk-lib; };
      default = self.packages.${system}.kittybox;
    };

    checks = {
      kittybox = self.packages.${system}.kittybox;
      distributed-test = pkgs.nixosTest (import ./distributed-test.nix self);
      nixos-test = pkgs.nixosTest (import ./smoke-test.nix self);
      dockerContainer = pkgs.callPackage ./docker.nix {
        inherit (self.packages.${system}) kittybox;
        rev = self.rev or "development";
        inherit (self) lastModifiedDate;
      };
    };

    devShells.default = pkgs.mkShell {
      name = "rust-dev-shell";

      nativeBuildInputs = with pkgs; [
        # required for tokio-console's console-subscriber
        pkg-config protobuf
        # required for httpmock, not actually used in the release
        openssl.dev zlib
        xh systemfd tokio-console
        cargo-watch cargo-edit cargo-outdated
        rustc cargo rust-analyzer clippy
      ];
    };
  });
}