[GHC] #7494: Allow compatible type synonyms to be the return type of a GADT data constructor.

[GHC]

#7494: Allow compatible type synonyms to be the return type of a GADT data
constructor.
----------------------------------------+-----------------------------------
    Reporter:  topi                     |       Owner:                  
        Type:  feature request          |      Status:  new             
    Priority:  normal                   |   Milestone:                  
   Component:  Compiler (Type checker)  |     Version:  7.4.1           
    Keywords:  GADT                     |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple         |     Failure:  None/Unknown    
  Difficulty:  Unknown                  |    Testcase:                  
   Blockedby:                           |    Blocking:                  
     Related:                           |  
----------------------------------------+-----------------------------------
Changes (by simonpj):

  * difficulty:  => Unknown


Comment:

 Would not be hard to do, I think, but it's one more thing to specify and
 maintain.  Why do you want this? Are you alone? Others: if you want this,
 say why, and add yourself to the cc list.

 Simon

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7494#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler