title: Cabal installing quickcheck version problem
body: <p>I'm trying to install quickcheck 2 via cabal on Ubuntu 10.04. No matter what I try to do, I always end up with the following:</p>
  
  <pre><code>$ cabal list quickcheck
  * QuickCheck
      Synopsis: Automatic testing of Haskell programs
      Latest version available: 2.1.1.1
      Latest version installed: 1.2.0.0
      Homepage: http://www.cse.chalmers.se/~koen
      License:  BSD3
  </code></pre>
  
  <p>This is on a clean Ubuntu 10.04 with only the ghc6 and cabal-install apt packages installed. I had installed the binary package via cabal before trying to install quickcheck.</p>
  
  <p>It tells me 2.1.1.1 is available, but it only ever installs 1.2.0.0. Why can't I get it to actually install the latest version?</p>