Wonderful. Thanks Adam for the quick reply, much appreciated. :)

On Aug 1, 2015, at 9:47 AM, Adam Bergmark wrote:

There is no uninstall command, there was at one point but it didn't do anything ;-)

Unregistering a package does not delete any files, but it will make cabal forget about its existence. If you are working in a sandbox you can simply `cabal sandbox delete; cabal sandbox init` to start from scratch, you can also deregister packages there with `cabal sandbox hc-pkg unregister`, outside a sandbox it's `ghc-pkg unregister`.

There are also tools on hackage that can clean up files when unregistering, iirc cab[1] can.

HTH, Adam

[1] http://hackage.haskell.org/package/cab http://hackage.haskell.org/package/cab

On Sat, Aug 1, 2015 at 2:52 PM, Peder Jakobsen mailto:pjakobsen@gmail.com> wrote: Hi, just browsed through the user guide on managing packages at at https://www.haskell.org/cabal/users-guide/installing-packages.html https://www.haskell.org/cabal/users-guide/installing-packages.html

Managing seems to imply that you should also be able to uninstall packages with a simple command. But there seem to be no instructions for how to do this for an installed packaged. What am I missing? Is it called “deregistering”?

Thanks again,

P.

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