[GHC] #15613: GHCi command, tracing steps of instance resolution for Constraint or expression

[GHC]

#15613: GHCi command, tracing steps of instance resolution for Constraint or
expression
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        Reporter:  Iceland_jack      |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  lowest            |            Milestone:
       Component:  GHCi              |              Version:
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #15610            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Iceland_jack):

 Reminder to self: display some kind of name, show how the final dictionary
 is constructed

 {{{
 $fSemigroup->   :: forall b a. Semigroup b => Semigroup (a -> b)
 $fSemigroupBool :: Semigroup Any
 }}}

 and information about Given/Wanted (stuff listed by `-ddump-tc-trace`.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15613#comment:6>
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