[GHC] #10952: Use IPids instead of package keys in HPC tix files

[GHC]

#10952: Use IPids instead of package keys in HPC tix files
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        Reporter:  mgsloan           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  low               |            Milestone:
       Component:  Code Coverage     |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by mgsloan):

 ezyang: Thanks for the infos!  It's fine if it doesn't directly solve the
 problem, as long as there's enough information to be able to munge the
 resulting tix files in reasonable ways.  As is, we can't really tell which
 package a particular tix entry refers to unless we know about the specific
 package key it uses.

 @Feuerbach: Yes, that's a rather unfortunate Cabal bug -
 https://github.com/haskell/cabal/issues/2870 - which is fixed in the
 development version.  I don't think stack can do anything about it.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10952#comment:8>
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