[GHC] #10284: Create a dedicated `TypeError` exception type

[GHC]

#10284: Create a dedicated `TypeError` exception type
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        Reporter:  kosmikus          |                   Owner:  kanetw
            Type:  feature request   |                  Status:  patch
        Priority:  normal            |               Milestone:
       Component:  Core Libraries    |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:  phab:D866
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Changes (by simonpj):

 * cc: core-libraries-committee@… (added)
 * component:  Compiler => Core Libraries


Comment:

 Core Libraries folk: are you happy with this change?

 See Phab:D866

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10284#comment:5>
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