[Hat] Hat bug report: Ambiguous occurrence `List'

[Malcolm Wallace]

> >  Fail: TraceId.hs:152: Non-exhaustive patterns in function tyClsInfo
> 
> I couldn't reproduce this bug with the current CVS sources.

Further to this, I have found some existing patches to Hat-2.02 that
enable qualified use of class names, so perhaps these are missing
from your version.

Regards,
    Malcolm