[GHC] #8218: Missing instance Monad WrappedMonad

[GHC]

#8218: Missing instance Monad WrappedMonad
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        Reporter:  jcpetruzza        |            Owner:  monoidal
            Type:  feature request   |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  libraries/base    |          Version:  7.6.3
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by Krzysztof Gogolewski <krz.gogolewski@…>):

 In [changeset:ffa99f42e54b21ac09442b3770e3b4c346cd5c70/testsuite]:
 {{{
 #!CommitTicketReference repository="testsuite"
 revision="ffa99f42e54b21ac09442b3770e3b4c346cd5c70"
 Wibble after #8218

 The new hidden line in output of tcfail181 is

 instance Monad m => Monad (Control.Applicative.WrappedMonad m).

 It might seem weird that Control.Applicative is suggested when
 not imported, but it's almost certainly a side-effect of AMP and
 it's harmless.
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8218#comment:3>
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