[Hackage] #199: when installing a new version of GHC, there should be a way to upgrade my packages

[Hackage]

#199: when installing a new version of GHC, there should be a way to upgrade my
packages
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  Reporter:  guest               |        Owner:                 
      Type:  enhancement         |       Status:  new            
  Priority:  normal              |    Milestone:  Cabal-1.8      
 Component:  cabal-install tool  |      Version:  1.2.3.0        
  Severity:  normal              |   Resolution:                 
  Keywords:                      |   Difficulty:  easy (<4 hours)
Ghcversion:  6.8.2               |     Platform:  Linux          
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Comment (by duncan):

 Replying to [comment:6 Saizan]:
 > How does this interact with keeping multiple compilers/versions side by
 side?
 > maybe we should have a world file for each one and be able to install
 the packages in world-compiler1 using compiler2

 There being just one world file is a feature, not a bug :-). It means that
 moving between compilers is easy. It's not likely that you want some
 things in one but not another. What is more likely is that there are some
 things that simply cannot be installed with an older version.

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/199#comment:7>
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