[Hackage] #675: template-haskell cannot be upgraded (broken data-accessor-template)

[Hackage]

#675: template-haskell cannot be upgraded (broken data-accessor-template)
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  Reporter:  guest               |        Owner:                    
      Type:  defect              |       Status:  new               
  Priority:  normal              |    Milestone:  cabal-install-0.16
 Component:  cabal-install tool  |      Version:  HEAD              
  Severity:  normal              |     Keywords:                    
Difficulty:  unknown             |   Ghcversion:  6.12.1            
  Platform:                      |  
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Comment(by benmachine):

 How about we un-hard-code them, and add a config setting for 'immutable'
 packages, default base?

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Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/675#comment:2>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects