[GHC] #1281: runghc, runhaskell invoke wrong ghc when not first ghc in PATH

[GHC]

#1281: runghc, runhaskell invoke wrong ghc when not first ghc in PATH
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 Reporter:  Isaac Dupree  |          Owner:             
     Type:  bug           |         Status:  new        
 Priority:  normal        |      Milestone:  6.10 branch
Component:  Compiler      |        Version:  6.6        
 Severity:  normal        |     Resolution:             
 Keywords:                |     Difficulty:  Unknown    
 Testcase:                |   Architecture:  Unknown    
       Os:  Linux         |  
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Comment (by simonmar):

 I think it's acceptable to require `#!/usr/bin/env`.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1281#comment:12>
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