[Haskell-cafe] template haskell for typeclass synonyms

[Paolino]

Hello.

I'd like to have a template haskell function that take some constraints and
a class name and write an empty class from those and relative empty instance
to simulate typeclass synonyms.

As I've never written TH and couldn't find a easily adaptable code around, I
ask here for the code, or some hints on how to arrive there.

Thanks

paolino
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