[Hackage] #655: for every install there should be an uninstall

[Hackage]

#655: for every install there should be an uninstall
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  Reporter:  nr                  |        Owner:           
      Type:  enhancement         |       Status:  new      
  Priority:  normal              |    Milestone:           
 Component:  cabal-install tool  |      Version:  1.6.0.1  
  Severity:  normal              |     Keywords:  uninstall
Difficulty:  unknown             |   Ghcversion:           
  Platform:                      |  
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Comment(by nr):

 This is still an issue.  I am having a dependency problem with pads-
 haskell-0.2 and haskell-src-meta-0.4.  haskell-src-meta-0.4 depends on
 haskell-src-exts in the range 1.6 to 1.0.  But with haskell-src-exts-1.9,
 pads-haskell will not build.  With haskell-src-exts-1.10.2, pads-haskell
 will build.

 My machine has *both* versions of haskell-src-exts.  But I cannot add the
 higher dependency to pads-haskell.cabal without extensive bleating.
 There is clearly an underlying dependency problem here that ought to be
 addressed, but my immediate concern is to get software to build.  If
 'cabal uninstall' existed, I could uninstall the older packages and
 continue. As it is, the only way I know to make progress is to remove all
 of  ~/.cabal and start over.  Not a good model.

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/655#comment:3>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects