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

[GHC]

#10284: Create a dedicated `TypeError` exception type
-------------------------------------+-------------------------------------
        Reporter:  kosmikus          |                Owner:  kanetw
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Core Libraries    |              Version:  7.10.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
                                     |  typecheck/should_run/T10284
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  phab:D866
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Comment (by RyanGlScott <ryan.gl.scott@…>):

 In [changeset:"a7ad0b91e7dace173ed95f31b221628d50c175e8/ghc" a7ad0b9/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="a7ad0b91e7dace173ed95f31b221628d50c175e8"
 Make TypeError a newtype, add changelog entry

 Summary:
 Phab:D866 added the `TypeError` datatype to `Control.Exception` to
 represent
 the error that is thrown when `-fdefer-type-errors` is on, but a changelog
 entry for it was never added. In addition, it should probably be a
 newtype.

 Reviewers: austin, hvr, KaneTW, bgamari

 Reviewed By: KaneTW, bgamari

 Subscribers: thomie, KaneTW

 Differential Revision: https://phabricator.haskell.org/D1873

 GHC Trac Issues: #10284
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10284#comment:12>
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