Thanks to Daniel.  Ian, Simon, I have a question about installing extra libs.

|    quasiquotation/qq006                qq006 [stderr mismatch] (normal)

I get "Could not find module `Text.ParserCombinators.Parsec.Char'".  Presumably 
the test depends on parsec. 

Similarly for T3087 which needs 'syb', although the error message is different:
<command line>: cannot satisfy -package syb
    (use -v for more information)

How do I install parsec or syb?

The Building Guide has two conflicting pieces of advice:

* http://hackage.haskell.org/trac/ghc/wiki/Commentary/Libraries
   add it to the 'packages' file

* http://hackage.haskell.org/trac/ghc/wiki/Debugging/InstallingPackagesInplace
   use 'cabal install'

And I vaguely remember that there's a third option:

* Unpack it into $(TOP)/libraries, and it'll automatically get built.

But I'm not sure which of these is recommended.  Can you advise?  I'll update 
the wiki once I understand.



| 
| More output than expected and the location of the expected error moved one
| line down.
| 
| 
| 
|    deriving/should_run                 T3087 [exit code non-0]
| (normal,hpc,optasm,profasm,threaded1,threaded2,dyn,profthreaded)
|    deriving/should_run                 T3087 [bad stdout or stderr] (ghci)
| 
| Message:
| 
| T3087.hs:28:19:
|     Ambiguous occurrence `ext2Q'
|     It could refer to either `Main.ext2Q', defined at T3087.hs:20:1
|                           or `Data.Generics.ext2Q',
|                              imported from `Data.Generics' at
| T3087.hs:5:1-20
|                              (and originally defined in
| `Data.Generics.Aliases')
| 
| T3087.hs:31:20:
|     Ambiguous occurrence `ext2Q'
|     It could refer to either `Main.ext2Q', defined at T3087.hs:20:1
|                           or `Data.Generics.ext2Q',
|                              imported from `Data.Generics' at
| T3087.hs:5:1-20
|                              (and originally defined in
| `Data.Generics.Aliases')
| 
| Change in syb?
| 
| 
|    programs/galois_raytrace            galois_raytrace [exit code non-0]
| (normal,hpc,optasm,profasm,threaded1,threaded2,dyn,profthreaded)
|    programs/galois_raytrace            galois_raytrace [bad stdout or
| stderr] (ghci)
| 
| Fails due to Haskell98 imports (Array, List, ...), the same applies to the
| raytrace test in hpc. Fixing the imports, galois_raytrace passes, but
| hpc_raytrace produces bad stdout:
| 
|    ../../libraries/hpc/tests/raytrace  hpc_raytrace [bad stdout]
| (normal,hpc,optasm,profasm,threaded1,threaded2,dyn,profthreaded)
| 
| 
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