[GHC] #11376: Inconsistent specified type variables among functions and datatypes/classes when using -XTypeApplications

GHC ghc-devs at haskell.org
Fri Jan 8 00:19:11 UTC 2016


#11376: Inconsistent specified type variables among functions and datatypes/classes
when using -XTypeApplications
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.1
  checker)                           |
      Resolution:                    |             Keywords:  TypeInType
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by rwbarton):

 So `TypeInType` enables `DataKinds` and `PolyKinds`, and
 `TypeApplications` enables `AllowAmbiguousTypes`. (The rest are default in
 ghci.)

 Turning off the "kind defaulting" to * from standard Haskell could result
 in some pretty confusing errors! Think of situations like #11324. But, OK,
 I guess...

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11376#comment:4>
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