[GHC] #13555: Typechecker regression when combining PolyKinds and MonoLocalBinds

[GHC]

#13555: Typechecker regression when combining PolyKinds and MonoLocalBinds
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.2.1
       Component:  Compiler (Type    |              Version:  8.1
  checker)                           |
      Resolution:                    |             Keywords:  TypeInType
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:                    |
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Comment (by simonpj):

 I'd be happy with (1): let's add a user-manual section about kind
 generalisation, including saying when it does ''not'' happen.

 Who will do that; Richard?

 Also, is it enough to say
 {{{
   crtInfo :: forall (m :: k) . (Reflects m Int) => ...blah...
 }}}
 or do we need
 {{{
   crtInfo :: forall k (m :: k) . (Reflects m Int) => ...blah...
 }}}
 I think the former is ok, but is there a rule in the user manual that
 makes that clear?

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13555#comment:7>
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