[GHC] #10142: Documentation for Ix is contradictory around minimal definition

[GHC]

#10142: Documentation for Ix is contradictory around minimal definition
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        Reporter:  goldfire          |                   Owner:  hvr
            Type:  bug               |                  Status:  patch
        Priority:  normal            |               Milestone:  7.10.1
       Component:  Core Libraries    |                 Version:  7.8.4
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:  Phab:D709
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Comment (by Herbert Valerio Riedel <hvr@…>):

 In [changeset:"7a2d65a4d93273c89fbb1d19e282d5933c67c7ca/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="7a2d65a4d93273c89fbb1d19e282d5933c67c7ca"
 Define proper `MINIMAL` pragma for `class Ix`

 Summary: This addresses #10142

 Reviewers: goldfire, austin, ekmett

 Reviewed By: austin, ekmett

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D709

 GHC Trac Issues: #10142
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10142#comment:4>
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