[GHC] #13401: GHCi gives conflicting information about visible type application

GHC ghc-devs at haskell.org
Fri Mar 10 02:02:23 UTC 2017


#13401: GHCi gives conflicting information about visible type application
-------------------------------------+-------------------------------------
        Reporter:  crockeea          |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  GHCi              |              Version:  8.0.1
      Resolution:                    |             Keywords:
                                     |  TypeApplications
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #11376, #11975    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by goldfire):

 One more point to make about GHCi's lies: when GHCi doesn't lie,
 [https://mail.haskell.org/pipermail/ghc-devs/2016-February/011268.html
 outrage ensues]. That debate shows that beginners (and, indeed, most
 Haskellers doing routine Haskelling) can't handle the truth. My point here
 is that lying is not always undesired behavior.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13401#comment:9>
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