--- a/build/virtualenv_packages.txt
+++ b/build/virtualenv_packages.txt
@@ -1,2 +1,1 @@
-comm.pth:comm/taskcluster
 comm.pth:comm/testing/marionette

--- a/taskcluster/ci/config.yml
+++ b/taskcluster/ci/config.yml
@@ -81,16 +81,19 @@ partner-urls:
 
 task-priority:
     by-project:
         'comm-esr68': 'very-high'
         'comm-beta': 'high'
         'comm-central': 'medium'
         'default': 'low'
 
+taskgraph:
+    register: comm_taskgraph:register
+
 workers:
     aliases:
         b-linux.*:
             provisioner: 'comm-{level}'
             implementation: docker-worker
             os: linux
             worker-type: '{alias}'
         b-win2012:

--- a/taskcluster/comm_taskgraph/__init__.py
+++ b/taskcluster/comm_taskgraph/__init__.py
@@ -1,3 +1,29 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from __future__ import absolute_import, print_function, unicode_literals
+
+import os
+import logging
+from importlib import import_module
+
+from taskgraph import GECKO
+
+logger = logging.getLogger(__name__)
+
+COMM = os.path.join(GECKO, 'comm')
+
+
+def register(graph_config):
+    """
+    Import all modules that are siblings of this one, triggering decorators in
+    the process.
+    """
+    logger.info("{} path registered".format(__name__))
+    _import_modules([])
+
+
+def _import_modules(modules):
+    for module in modules:
+        import_module(".{}".format(module), package=__name__)