[GHC] #7730: :info and polykinds

[GHC]

#7730: :info and polykinds
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        Reporter:  monoidal                 |            Owner:  archblob
            Type:  bug                      |           Status:  new
        Priority:  normal                   |        Milestone:  7.10.1
       Component:  Compiler (Type checker)  |          Version:  7.6.2
      Resolution:                           |         Keywords:
Operating System:  Unknown/Multiple         |     Architecture:
 Type of failure:  None/Unknown             |  Unknown/Multiple
       Test Case:                           |       Difficulty:  Unknown
        Blocking:                           |       Blocked By:
                                            |  Related Tickets:  #8776
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Comment (by archblob):

 We will also need extra information on {{{IfaceTyCon}}}, if it's a
 promoted data constructor or promoted type constructor in order to quote
 it when appropriate (promoted type constructors are only quoted when using
 {{{-dppr-debug}}}).

 This extra information is only needed in the case of {{{IfaceTyConApp}}}
 but the current {{{newtype IfaceTyCon = IfaceTc { ifaceTyConName ::
 IfExtName } }}} is also used for coercion constructors so we might need to
 use a separate representation for type constructors in the context of
 {{{IfaceTyConApp}}} that contains this extra information.

 I was thinking something like:
 {{{#!haskell
 -- I'm not really fond of the names
 IfacePTyCon
   = IfacePDataCon IfExtName
   | IfacePTyCon   IfExtName
   | IfaceStdTyCon IfExtName

 }}}

 This would not really change things, it is again just more tagging.

 Andrei

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7730#comment:36>
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