able to load collection but the mitogen master proc was unable to serve it

ansible_mitogen/mixins.py

@@ -75,7 +75,14 @@ except ImportError:
 LOG = logging.getLogger(__name__)
 
 try:
-    class ActionModuleMixin(ansible.plugins.action.ActionBase):
+    BaseActionClass = ansible.plugins.action.ActionBase
+except AttributeError:
+    # collections were added in https://github.com/ansible/ansible/pull/52194/files
+    # monkeypatching collections since they don't have an actionBase
+    BaseActionClass = type('DummyActionBase', (object,), {})
+
+
+class ActionModuleMixin(BaseActionClass):
     """
     The Mitogen-patched PluginLoader dynamically mixes this into every action
     class that Ansible attempts to load. It exists to override all the
@@ -519,8 +526,3 @@ try:
             'stdout_lines': stdout_text.splitlines(),
             'stderr': stderr,
         }
-except AttributeError:
-    # if we're loading collections, there is no ActionBase
-    # collections are implemented via an import hook
-    # https://github.com/ansible/ansible/pull/52194/files
-    pass

ansible_mitogen/strategy.py

@@ -138,12 +138,7 @@ def wrap_action_loader__get(name, *args, **kwargs):
 
     klass = ansible_mitogen.loaders.action_loader__get(name, **get_kwargs)
     if klass:
-        try:
         bases = (ansible_mitogen.mixins.ActionModuleMixin, klass)
-        except AttributeError:
-            # if we're loading a collection, there's no ActionModuleMixin
-            bases = (klass,)
-
         adorned_klass = type(str(name), bases, {})
         if kwargs.get('class_only'):
             return adorned_klass