[GHC] #9618: Undocument ImpredicativeTypes

[GHC]

#9618: Undocument ImpredicativeTypes
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              Reporter:  dfeuer      |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:  7.10.1
             Component:              |          Version:  7.8.3
  Documentation                      |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Easy (less than 1
  Unknown/Multiple                   |  hour)
       Type of failure:              |       Blocked By:
  Documentation bug                  |  Related Tickets:  #8808
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Changes (by thomie):

 * related:   => #8808


Comment:

 Perhaps never showing the following suggestion either, see
 `compiler/typecheck/TcErrors.lhs`:
 {{{
 Perhaps you want ImpredicativeTypes
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9618#comment:2>
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