From f0e3cfe5f0779de03caf26c2f379919de2494523 Mon Sep 17 00:00:00 2001
From: Jan Losinski <losinski@wh2.tu-dresden.de>
Date: Mon, 21 Jan 2019 21:46:55 +0100
Subject: [PATCH] Fix waiting for the wrong future type

---
 punkow/service/mailer.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/punkow/service/mailer.py b/punkow/service/mailer.py
index 5d08740..07dd4a7 100644
--- a/punkow/service/mailer.py
+++ b/punkow/service/mailer.py
@@ -3,6 +3,7 @@ from __future__ import annotations
 import asyncio
 import concurrent.futures
 import dataclasses
+import functools
 import logging
 import os
 import smtplib
@@ -107,7 +108,8 @@ class AsyncMailQueue(object):
 
     async def __aexit__(self, exc_type, exc_val, exc_tb):
         if len(self._queue) != 0:
-            await asyncio.gather(*self._queue)
+            await self._loop.run_in_executor(None, functools.partial(
+                concurrent.futures.wait(self._queue)))
 
     def _append_task(self, coro):
         self._queue.append(asyncio.run_coroutine_threadsafe(coro, self._loop))