[GHC] #10179: Kinds missing from types in ghci

21 Mar 2015


      #10179: Kinds missing from types in ghci
-------------------------------------+-------------------------------------
              Reporter:  br1         |             Owner:
                  Type:  bug         |            Status:  new
              Priority:  normal      |         Milestone:
             Component:  GHCi        |           Version:  7.10.1-rc2
              Keywords:              |  Operating System:  Unknown/Multiple
          Architecture:              |   Type of failure:  None/Unknown
  Unknown/Multiple                   |        Blocked By:
             Test Case:              |   Related Tickets:
              Blocking:              |
Differential Revisions:              |
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 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE DataKinds #-}
 {-# LANGUAGE PolyKinds #-}

 data family F (a:: k)

 foo :: F (m :: [()]) -> a
 foo = undefined
 bar :: F (m :: [[()]]) -> a
 bar = undefined

 according to GHCi, both foo and bar have type F m -> a but [foo, bar]
 fails

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Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10179
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