[GHC] #7730: :info and polykinds

[GHC]

#7730: :info and polykinds
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        Reporter:  monoidal                 |            Owner:
            Type:  bug                      |           Status:  new
        Priority:  normal                   |        Milestone:  7.8.1
       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:
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Comment (by simonpj):

 By default I'm now suppressing the kind arguments.  But the problem is
 still there, as you'll see if you use `-fprint-explicit-kinds`.

 The trouble is that it's hard to build the `TyCon`s with pretty kind
 varaibles.

 When converting to `IfaceSyn` we do pretty-ify them (because interface
 files work on `OccNames`).  So a viable approach would be, in the `info`
 command, to convert to `IfaceSyn` (using the existing code in `MkIface`)
 and then print that. I think this would be quite straightforward, but the
 printing stuff used by GHCi would need to be adapted to use `IfaceSyn`
 instead.

 Would anyone care to try this? Simple but a bit fiddly.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7730#comment:3>
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