self: super:

{
  dogetipbot-telegram = super.callPackage (super.fetchgit {
    url = "https://gitlab.com/nyanloutre/dogetipbot-telegram.git";
    rev = "33e5a2273cc1e447dec9a37676913915706fd332";
    sha256 = "1rzv5qd7bj1dzx5qa2h4mdzzvxk77hz3svfcg7hq0sff8a7npk46";
  }) { pkgs = self; };
}