[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:  lowest                   |   Milestone:  7.6.2           
   Component:  Compiler (Type checker)  |     Version:  6.8.1           
    Keywords:                           |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple         |     Failure:  None/Unknown    
  Difficulty:  Unknown                  |    Testcase:                  
   Blockedby:                           |    Blocking:                  
     Related:                           |  
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Comment(by goldfire):

 As far as I can see, the evolution of the type system hasn't fundamentally
 changed this issue. With closed kinds (i.e., those from a promoted
 datatype), it is easy to define an ordering using a type family. But, that
 doesn't solve the problem for kind {{{*}}}.

 There is a chance that any applications that want this feature can use
 nfrisby's packages, or the upcoming TypeLits work, which includes type-
 level strings.

 Is there anyone out there who still needs this? What's your application?

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1894#comment:19>
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