[Haskell-cafe] tuples and Show in GHC

[Keean Schupke]

Daniel Fischer wrote:

>The Show instances for tuples aren't automatically derived, they are defined 
>in GHC.Show. So somewhere there must be an end, probably the author(s) 
>thought that larger tuples than quintuples aren't used often enough to 
>bother. That's not a principled reason but a practical one, but it's good 
>enough for me.
>If you need them frequently and don't want to define your own instances, 
>complain.
>BTW, tuples are defined in Data.Tuple up to 62-tuples and Eq and Ord instances 
>are derived up to 15-tuples.
>In Hugs, apparently they are only provided up to quintuples.
>
Has there been any work done on declaring instances over all tuples? It 
seems the pattern occurs fairly often, and is quite simple to abstract.

    Keean.