out of memory error with template mixins

[Saaa]

Can't recreate the error in a small test project (5 modules).
I think the problem lies somewhere in between cyclic module imports, mixin 
struct definitions and maybe the actual size of the class(1k) and its 
complexity of interfaces(8).

One more thing:
The out of memory is before it can tell there is an variable missing, 
although the error is also there when the variable is not missing.