[GHC] #15321: Typed holes in Template Haskell splices produce bewildering error messages

[GHC]

#15321: Typed holes in Template Haskell splices produce bewildering error messages
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.8.1
       Component:  Template Haskell  |              Version:  8.4.3
      Resolution:                    |             Keywords:  TypedHoles
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Poor/confusing    |  Unknown/Multiple
  error message                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by simonpj):

 PS I missed your patch. I think the approach in comment:4 would be more
 comprehensible

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15321#comment:5>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler