[GHC] #1133: auto-derivation of Enum is disallowed with recursive imports

[GHC]

#1133: auto-derivation of Enum is disallowed with recursive imports
-------------------------------+--------------------------------------------
  Reporter:  heatsink          |          Owner:  simonpj         
      Type:  bug               |         Status:  closed          
  Priority:  lowest            |      Milestone:  _|_             
 Component:  Compiler          |        Version:  6.6             
Resolution:  fixed             |       Keywords:                  
        Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown      |     Difficulty:  Unknown         
  Testcase:  T1133, T1133A     |      Blockedby:                  
  Blocking:                    |        Related:                  
-------------------------------+--------------------------------------------
Changes (by igloo):

  * status:  new => closed
  * testcase:  => T1133, T1133A
  * resolution:  => fixed


Comment:

 Yes, looks good, thanks. I added a couple of tests.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1133#comment:9>
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