[GHC] #5004: yesod-0.7.1 causes panic on Arch's ghc 7.0.2

[GHC]

#5004: yesod-0.7.1 causes panic on Arch's ghc 7.0.2
---------------------------------+------------------------------------------
    Reporter:  pbrisbin          |       Owner:            
        Type:  bug               |      Status:  new       
    Priority:  normal            |   Component:  Compiler  
     Version:  7.0.2             |    Keywords:            
    Testcase:                    |   Blockedby:            
          Os:  Linux             |    Blocking:            
Architecture:  Unknown/Multiple  |     Failure:  GHCi crash
---------------------------------+------------------------------------------

Comment(by pbrisbin):

 I've attached the build.mk used by Arch Linux, maybe something in there
 can be changed?

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5004#comment:3>
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