[GHC] #13895: "Illegal constraint in a type" error - is it fixable?

GHC ghc-devs at haskell.org
Sun Jun 17 18:52:30 UTC 2018


#13895: "Illegal constraint in a type" error - is it fixable?
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.0.1
  checker)                           |             Keywords:  TypeInType,
      Resolution:  duplicate         |  ImpredicativeTypes
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #12045, #14845,   |  Differential Rev(s):  Phab:D4728
  #14859                             |
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by RyanGlScott):

 * status:  patch => closed
 * resolution:   => duplicate


Comment:

 This ticket is essentially a dual feature request for explicit
 impredicativity and visible kind application, which are being tracked
 separately in #14859 and #12045, respectively.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13895#comment:9>
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