{
  description = "Betterbird binaries provided for NixOS";

  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

  outputs =
    { nixpkgs, ... }:
    let
      forAllSystems = nixpkgs.lib.genAttrs [
        "x86_64-linux"
      ];
    in
    {
      packages = forAllSystems (
        system:
        let
          pkgs = import nixpkgs { inherit system; };
          inherit (pkgs) callPackage;
        in
        rec {
          default = betterbird;
          betterbird-unwrapped = callPackage ./betterbird-unwrapped.nix {
            url = "https://www.betterbird.eu/downloads/LinuxArchive/betterbird-128.5.2esr-bb19.en-US.linux-x86_64.tar.bz2";
            hash = "sha256-eW6pA1GFvsxFh6uckFUmOhtTn9HqhpGuW4iXTk/k+E8=";
            version = "128.5.2esr-bb19";
          };
          betterbird = callPackage ./betterbird.nix { inherit betterbird-unwrapped; };
        }
      );

    };
}