[GHC] #1894: Add a total order on type constructors

[GHC]

#1894: Add a total order on type constructors
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 Reporter:  guest                    |          Owner:          
     Type:  feature request          |         Status:  new     
 Priority:  normal                   |      Milestone:          
Component:  Compiler (Type checker)  |        Version:  6.8.1   
 Severity:  normal                   |     Resolution:          
 Keywords:                           |     Difficulty:  Unknown 
 Testcase:                           |   Architecture:  Multiple
       Os:  Multiple                 |  
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Comment (by guest):

 The problem with using uniqIds is that the order used when a module is
 compiled must be the same as the order used when it is imported. Do the
 existing uniqIds have that property?

 The suggestion to restrict this to a special type-class is a good one.
 Maybe this should be done as a special kind of `deriving`. I would prefer
 a new class to an extension of an existing one.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1894#comment:4>
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