[GHC] #13520: instance Alternative ZipList

[GHC]

#13520: instance Alternative ZipList
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        Reporter:  Iceland_jack      |                Owner:  (none)
            Type:  feature request   |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  libraries/base    |              Version:  8.0.1
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3416
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"486b8db05fefd1cfa916928c74958f8099b9f9f8/ghc" 486b8db/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="486b8db05fefd1cfa916928c74958f8099b9f9f8"
 Add Alternative instance for ZipList (fix #13520).

 Reviewers: austin, hvr, bgamari, RyanGlScott

 Reviewed By: RyanGlScott

 Subscribers: adamse, RyanGlScott, rwbarton, thomie

 Differential Revision: https://phabricator.haskell.org/D3416
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13520#comment:6>
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