{ prev, ... }:
{
  mcontrolcenter = prev.callPackage (prev.fetchurl {
    url = "https://raw.githubusercontent.com/NixOS/nixpkgs/2efffaa70e6de4cb34fd694798af5d433250f4e8/pkgs/by-name/mc/mcontrolcenter/package.nix";
    hash = "sha256-WnjSrSAurmN6dWOzjjZMXXxh0lUigyRPlXlg3OC0lu8=";
  }) { };
}