On Saturday 22 January 2011 17:31:58, Aaron Gray wrote:

I am getting the following error :-

C:\Languages\Lexer\Haskell>cabal install ranges Resolving dependencies... cabal: Error: some packages failed to install: ranges-0.2.3 failed while unpacking the package. The exception was: user error (TAR checksum error)

I am on Windows Vista, is it possible to clean or delete Cabal's cache ?

You can delete the offending .tar.gz in your $HOME/.cabal file (or wherever the stuff is on Vista). Go to $HOME/.cabal/packages/hackage.haskell.org and delete the folder "ranges" or the .tar.gz therein (after unregistering ranges from GHC if you haven't already done that).

Many thanks in advance,

Aaron