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

Hackage cvs-ghc at haskell.org
Sat May 1 18:05:29 EDT 2010

#675: template-haskell cannot be upgraded (broken data-accessor-template)
  Reporter:  guest               |        Owner:        
      Type:  defect              |       Status:  new   
  Priority:  normal              |    Milestone:        
 Component:  cabal-install tool  |      Version:  HEAD  
  Severity:  normal              |     Keywords:        
Difficulty:  unknown             |   Ghcversion:  6.12.1
  Platform:                      |  
 data-accessor-template- has flags in the cabal file on template-
 haskell versions, which makes it broken for cabal-install on ghc-6.12:

 cabal-install tries to install template-haskell-2.3, which fails (and it
 can't be expected to succeed because TH is integrated into ghc due to

 You can work around the build failure with:

   cabal install data-accessor-template --constraint='template-haskell >=

 cabal-install ought to know that template-haskell isn't something it
 should install (as it does with base).

Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/675>
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