Re: [Haskell-cafe] Quick Question for QuickCheck2

Thanks! This makes perfect sense, but as I just discovered using ghci -v there is an even stranger problem. I'm side-tracking slightly from the original question here, but nevertheless... GHC gives the following output: --- GHCi, version 6.12.3: http://www.haskell.org/ghc/ :? for help <command line>: cannot satisfy -package QuickCheck-2.1.1.1: QuickCheck-2.1.1.1-c7435cb0d5b5de72fe9540c48335606d is unusable due to missing or recursive dependencies: ghc-6.12.3-66a382195c8a71849653439b67021fd1 (use -v for more information) shell returned 1 --- However I am using the version of GHC mentioned, so I have no idea what is going on. On Tue, Aug 31, 2010 at 1:09 AM, John Millikin wrote:

Update your cabal package list, and then install QuickCheck. Optionally, you can use a version specifier:

   cabal update    cabal install 'QuickCheck >= 2'

This should make QuickCheck 2 the default in GHCI. If it doesn't, you may need to specify the version:

   ghci -package QuickCheck-2.2

For Cabal-packaged libraries/applications, simply update your version requirements.

On Mon, Aug 30, 2010 at 09:06, Lyndon Maydwell wrote:

...

I'm just trying these examples, and I can't figure out how to import quickcheck2 rather than quickcheck1. I've looked around but I can't seem to find any information on this. How do I do it?

Thanks!