[GHC] #11398: Type application for operator sections

[GHC]

#11398: Type application for operator sections
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        Reporter:  Iceland_jack      |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
                                     |  TypeApplications
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 goldfire):

 What's the typing rule you're proposing? It's awfully easy to find cases
 like this one where the behavior is straightforward, but coming up with a
 consistent rule is quite hard. Take `const`. What type should {{{(`const`
 undefined)}}} have? `forall a. a -> a`? `forall a b. a -> a`? What about
 {{{(undefined `const`)}}}?

 In the end, I think this is a no-go, for exactly the same reason that
 applied functions have inferred type parameters, not specified ones.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11398#comment:1>
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