[GHC] #9049: Expose srcLoc from the assertion architecture to allow better error messages

[GHC]

#9049: Expose srcLoc from the assertion architecture to allow better error
messages
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              Reporter:  nh2         |            Owner:  gridaphobe
                  Type:  feature     |           Status:  new
  request                            |        Milestone:
              Priority:  normal      |          Version:  7.8.2
             Component:  Compiler    |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Unknown
  Unknown/Multiple                   |       Blocked By:
       Type of failure:              |  Related Tickets:
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by gridaphobe):

 I'd also like to add that I think it would be a shame to deprecate
 ImplicitParams, this feature notwithstanding. ImplicitParams is niche,
 yes, but it's also super convenient at times, in particular for passing
 around some configuration without having to restructure your whole program
 as a reader monad.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9049#comment:17>
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