[GHC] #11293: Compiler plugins don't work with profiling

[GHC]

#11293: Compiler plugins don't work with profiling
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           Reporter:  ezyang         |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Profiling      |           Version:  7.11
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Suppose I have a normally built compiler plugin, and I'd like to use it
 while building some profiled code.  This doesn't work: (non-profiled) GHC
 searches for the profiled version of the plugin. This is wrong wrong
 wrong: plugin searches should be with respect to how GHC was compiled.
 (Test case: take the `plugins01` test and add `-prof` to it)

 Now that we have `-plugin-package`, it should be a simple matter to ensure
 that plugin lookups follow a different codepath, though I'm not sure how
 to figure out what GHC is built with; this should just be however TH does
 it.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11293>
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