[Hackage] #297: cabal fetch command don't fetch packages those have already been installed

[Hackage]

#297: cabal fetch command don't fetch packages those have already been installed
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  Reporter:  chylli              |        Owner:       
      Type:  defect              |       Status:  new  
  Priority:  normal              |    Milestone:       
 Component:  cabal-install tool  |      Version:       
  Severity:  normal              |     Keywords:       
Difficulty:  normal              |   Ghcversion:  6.8.2
  Platform:                      |  
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 when I saw cabal help:
   fetch        Downloads packages for later installation or study.
 I think I can fetch any packages to study. But in fact it not. They only
 download packages those have not installed yet. I think this help info can
 mislead users.

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Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/297>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects