{ config, lib, pkgs, inputs, ... }:

let
  cyrus-sasl-xoauth2 = with pkgs;
    stdenv.mkDerivation {
      name = "cyrus-sasl-xoauth2";
      src = inputs.cyrus-sasl-xoauth2;
      nativeBuildInputs =
        [ autoreconfHook inputs.nixpkgs.legacyPackages."${system}".cyrus_sasl ];
    };

in {
  nixpkgs.overlays = [
    (final: prev: {
      cyrus_sasl = prev.cyrus_sasl.overrideAttrs (div: rec {
        postInstall = ''
          for lib in ${cyrus-sasl-xoauth2}/lib/sasl2/*; do
            ln -sf $lib $out/lib/sasl2/
          done
        '';
      });
    })
  ];
}