{ prev, ... }:
let
  nixpkgs = prev.fetchFromGitHub {
    owner = "NixOS";
    repo = "nixpkgs";
    rev = "5fa4d405272ea98dab145f0c9f7ea1dbb9c87c31";
    hash = "sha256-Qwwbt4vbqwllUJElZomSybbZkbmhsuIac3gqrl+GVUs=";
  };
  pkgs = (import (nixpkgs + "/pkgs/top-level")) { localSystem = prev.stdenv.buildPlatform.system; };
in rec {
  radicale3 = radicale;
  inherit (pkgs) radicale;
}