[GHC] #2364: Make the maximum tuple size accesible

[GHC]

#2364: Make the maximum tuple size accesible
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    Reporter:  fons             |       Owner:          
        Type:  feature request  |      Status:  new     
    Priority:  normal           |   Component:  Compiler
     Version:  6.8.2            |    Severity:  normal  
    Keywords:                   |    Testcase:          
Architecture:  Unknown          |          Os:  Unknown 
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 In relation with the implementation of a Haskell-embedded DSL, I'm using
 Template Haskell to automatically generate instances for tuples.

 I'd like to use tuples as big as GHC allows me to. However, the upper size
 limit (62 as of GHC 6.8.2) is not accessible by the end user. That forces
 me to hardcode the size, which, as you can imagine, is not a good practice
 since the value can change in future versions of the compiler.

 Thus, I propose to include a constant (e.g. {{{maxTupleSize}}}) somewhere
 under GHC.* (maybe GHC.Exts) for that purpose.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2364>
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