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:
$ 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
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.
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?
$ cabal install --dry-run quickcheck
Resolving dependencies...
In order, the following would be installed (use -v for more details):
QuickCheck-1.2.0.0
I'm not sure why it chooses the old version, but you can just do:
$ cabal install --dry-run quickcheck-2.1
Resolving dependencies...
In order, the following would be installed (use -v for more details):
mtl-1.1.0.2
QuickCheck-2.1
You can be more specific in the version number, but you don't have to.
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