Resolve "Per-user libraries" (use !368 instead)

api/funkwhale_api/taskapp/celery.py

@@ -2,20 +2,29 @@
 from __future__ import absolute_import
 
 import functools
+import traceback as tb
 import os
-
-from celery import Celery
+import logging
+import celery.app.task
 from django.apps import AppConfig
 from django.conf import settings
 
+
+logger = logging.getLogger("celery")
+
 if not settings.configured:
     # set the default Django settings module for the 'celery' program.
     os.environ.setdefault(
         "DJANGO_SETTINGS_MODULE", "config.settings.local"
     )  # pragma: no cover
 
+app = celery.Celery("funkwhale_api")
 
-app = Celery("funkwhale_api")
+
+@celery.signals.task_failure.connect
+def process_failure(sender, task_id, exception, args, kwargs, traceback, einfo, **kw):
+    print("[celery] Error during task {}: {}".format(task_id, einfo.exception))
+    tb.print_exc()
 
 
 class CeleryConfig(AppConfig):