Ok this could seem to make no sense, and this actually does not...
Of course it solved the error in this precise case but the point of
generating functions through macros inside the module was precisely because
I have to define a type outside the module that should be used inside one
of the functions of the module. As the module is parsed, this type is not
yet defined... So, obviously, when I use @eval in this case, it miserably
fails.
I'll try to come up with a minimal example which describe a bit more what I
want to do.
