[GHC] #14673: Unary Unboxed Tuple Type Constructor

[GHC]

#14673: Unary Unboxed Tuple Type Constructor
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        Reporter:  andrewthad        |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.4.1-alpha1
      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 simonpj):

 Yes, we have

 * Boxed tuple constructors: `()`, `Unit`, `(,)`, `(,,)`, etc
 * Unboxed tuple constructors: `(##)`, `Unit#`, `(#,#)`, `(#,,#)`, etc

 All but `Unit` and `Unit#` are built-in syntax, and hence don't need to be
 imported.

 I agree that it'd be useful to be able to import `Unit` and `Unit#`.  I'm
 sure it would not be hard.  I ''think'' that all you need to do is

 * add `AvailTC (getName unitTyCon) [getName unitTyCon, getName
 unitDataCon]` and simlarly for `unboxedUnitTyCon`, to
 `PrelInfo.ghcPrimExports`

 Would someone like to try that?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14673#comment:4>
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