[GHC] #9632: Promotable type synonyms (or: synonyms to promoted types)

[GHC]

#9632: Promotable type synonyms (or: synonyms to promoted types)
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        Reporter:  jstolarek         |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:
  checker)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by thomie):

 This compiles:

 {{{
 {-# LANGUAGE TypeInType #-}

 module PromotableTypeSynonyms where

 import Data.Kind

 data B = T | F
 data P :: B -> *

 type B' = B
 data P' :: B' -> *
 }}}

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 HEAD (1 day delay) from here:
 https://launchpad.net/~hvr/+archive/ubuntu/ghc

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9632#comment:3>
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