[GHC] #8727: HLearn test on ubuntu Precise x64 within vagrant Box

[GHC]

#8727: HLearn test on ubuntu Precise x64 within vagrant Box
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        Reporter:  teuffy    |            Owner:
            Type:  bug       |           Status:  new
        Priority:  normal    |        Milestone:
       Component:  Compiler  |          Version:  7.6.3
      Resolution:            |         Keywords:
Operating System:  Linux     |     Architecture:  x86_64 (amd64)
 Type of failure:  Other     |       Difficulty:  Unknown
       Test Case:            |       Blocked By:
        Blocking:            |  Related Tickets:
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Comment (by hvr):

 Replying to [comment:12 teuffy]:
 > I installed ghc-7.8.1 and ghc --version still showing 7.6.3. What should
 I do to test my code under ghc 7.8.1?

 Fyi, when using the `ppa:hvr/ghc` PPAs you need to put e.g.
 `/opt/ghc/7.8.1/bin` early enough in your PATH.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8727#comment:16>
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