[GHC] #5138: TypeSynonymInstances should be enabled by default

[GHC]

#5138: TypeSynonymInstances should be enabled by default
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  Reporter:  mcandre                    |          Owner:                                    
      Type:  feature request            |         Status:  closed                            
  Priority:  normal                     |      Milestone:                                    
 Component:  Compiler                   |        Version:  7.0.2                             
Resolution:  wontfix                    |       Keywords:  type synonyms instance declaration
  Testcase:                             |      Blockedby:                                    
Difficulty:                             |             Os:  Unknown/Multiple                  
  Blocking:                             |   Architecture:  Unknown/Multiple                  
   Failure:  GHC rejects valid program  |  
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Changes (by simonmar):

  * status:  new => closed
  * resolution:  => wontfix


Comment:

 It's a sensible suggestion, however in GHC we accept Haskell 2010 (and
 only Haskell 2010) by default.  If we started adding some set of sensible
 extensions, it gets hard to decide where to stop; the current policy has
 the advantage of making this decision easy.

 So, my suggestion is to take this to `haskell-prime at haskell.org` and get
 `TypeSynonymInstances` into the next Haskell standard.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5138#comment:1>
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