{
  description = "A simple OIDC SSO service";

  outputs = { self, nixpkgs, systems }: let 
    inherit (nixpkgs) lib;
    eachSystem = f: lib.genAttrs (import systems) (system: f {
      inherit system;
      pkgs = nixpkgs.legacyPackages.${system};
      ownPkgs = self.packages.${system};
    });
  in {
    devShells = eachSystem ({ pkgs, ... }: {
      default = pkgs.beam.beamLib.callPackage ./shell.nix {};
    });
    packages = eachSystem ({ pkgs, ... }: {
      default = pkgs.beam.packages.erlang.callPackage ./default.nix { inherit self; inherit (pkgs) elixir; };
    });
  };
}