[GHC] #12969: Rebindable enumFrom etc. syntax

[GHC]

#12969: Rebindable enumFrom etc. syntax
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        Reporter:  cactus            |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.0.1
  checker)                           |             Keywords:
      Resolution:                    |  RebindableSyntax
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 Currently they are defined to desugar to `fromList <the list>` and
 `fromList` ''is'' rebindable.

 You need `-XOverloadedLists` on to get this; see the
 [https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/glasgow_exts.html
 #overloaded-lists manual section].

 I'll add a note to the user manual.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12969#comment:1>
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