[GHC] #15119: Program involving existentials and type class constraint gets rejected

[GHC]

#15119: Program involving existentials and type class constraint gets rejected
-------------------------------------+-------------------------------------
        Reporter:  sgraf             |                Owner:  (none)
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler (Type    |              Version:  8.2.2
  checker)                           |
      Resolution:  wontfix           |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by sgraf):

 * status:  new => closed
 * type:  bug => feature request
 * resolution:   => wontfix


Comment:

 Let's hope that day isn't too far in the future :)

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15119#comment:4>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler