Hello, all.
Is it possible to import all types except some of instances and to
re-defined hiding instances, so resulting (new) module will be the same
types, mostly the same instances, but some of instances will be
replaced?
I tried to import all hiding interesting type, then to import
interesting type without instances, but when I redefine its instances I
get error about duplication of them:
import Old hiding (MyType)
import Old (MyType)
instance ... MyType where <-- error!!
Interesting that in Old module I'm exporting MyType without instances:
module (... , MyType, ...) where
Goal is to replace some instances and may be some types instead of
copy-paste all module (something like patching or inheritance of
module).
===
Best regards, Paul
