Cycle detected between modules with ctors/dtors

[Heinz]

I haven't faced this myself. DMD is complaining about module Ctors and Dtors, so
the bug must be there. But, i'm very curious about the scenario you mention,
nested classes accessing its outer class:

How are you referring the parent class from the child classes?
Use the "outer" property of the child classes and see if that helps a bit.