Note reasoning behind call order

subprocess_adapter.py

@@ -39,7 +39,10 @@ def subprocess_operator(cls: Operator, polling_interval=.01) -> Operator:
         Create pipe and modal timer, start subprocess
         """
         def invoke(self, context, event):
-            self.pipe = Pipe()
+            self.pipe = Pipe() #HACK: do this first so operator-defined invoke can access it
+            # this is needed because the operator is currently responsible for setting up the Process,
+            # and the pipe is needed for the subprocess_function decorator.
+            # TODO: Perhaps this responsibility should be handled here instead (simplifies things but looses some flexibility)
 
             orig_invoke(self, context, event)