[GHC] #11558: Using Cabal 1.22 against GHC 8.0 results in unhelpful errors

[GHC]

#11558: Using Cabal 1.22 against GHC 8.0 results in unhelpful errors
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        Reporter:  bgamari           |                Owner:
            Type:  bug               |               Status:  closed
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Package system    |              Version:  8.0.1-rc1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  warning at compile-time            |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1892
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"1f3d953e97f3c107f76d992bd087ed91f72d24e1/ghc" 1f3d953/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="1f3d953e97f3c107f76d992bd087ed91f72d24e1"
 users-guide: Mention #11558 in release notes
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11558#comment:12>
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