[GHC] #10407: git head no longer builds with ghc < 7.10

[GHC]

#10407: git head no longer builds with ghc < 7.10
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        Reporter:  erikd             |                   Owner:  erikd
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Building GHC      |  Unknown/Multiple
  failed                             |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by Erik de Castro Lopo <erikd@…>):

 In [changeset:"c119a8020f4e3073460e2c350507d5cf65771cea/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="c119a8020f4e3073460e2c350507d5cf65771cea"
 Use fmap instead of <$> (Fixes #10407)

 The <$> operator is only available in the standard Prelude in
 ghc 7.10 and later.

 Signed-off-by: Erik de Castro Lopo <erikd at mega-nerd.com>

 Test Plan: build with ghc-7.6

 Reviewers: dterei, ezyang, austin

 Subscribers: bgamari, thomie

 Differential Revision: https://phabricator.haskell.org/D886

 GHC Trac Issues: #10407
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10407#comment:1>
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