[GHC] #13267: Constraint synonym instances

[GHC]

#13267: Constraint synonym instances
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        Reporter:  ezyang            |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler (Type    |              Version:  8.1
  checker)                           |
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  GHC accepts       |            Test Case:
  invalid program                    |  polykinds/T13267
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by RyanGlScott):

 Certainly, since `Typeable1` is a constraint synonym for `Typeable` (since
 the 7.8 release, where `Typeable` became poly-kinded). But `Typeable1`,
 `Typeable2`, //et al.// have also been deprecated since 7.8 - surely you
 can just use `Typeable` instead?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13267#comment:11>
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