[GHC] #7419: "hpc markup" should accept multiple .mix file search paths

[GHC]

#7419: "hpc markup" should accept multiple .mix file search paths
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Reporter:  ttuegel           |          Owner:                  
    Type:  feature request   |         Status:  patch           
Priority:  normal            |      Component:  Compiler        
 Version:  7.6.1             |       Keywords:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown      |      Blockedby:                  
Blocking:                    |        Related:                  
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Comment(by ttuegel):

 The .mix file must not be found in multiple locations: the hpc library
 considers it an error for multiple .mix files to match. This sounds more
 constraining than it actually is, because matching is based on module name
 and a hash; one should only get multiple matches if the same file is
 checked twice.

 (If you do {{{ hpc --hpc-dir=A --hpc-dir=B }}}, hpc will search in the
 order you specified the directories, but it always searches all the
 paths.)

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7419#comment:3>
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