I think you need to run "cabal update"
On Thu, Dec 31, 2009 at 8:54 AM, Edward Z. Yang <[email protected]>
Excerpts from Michael Snoyman's message of Thu Dec 31 00:43:52 -0500 2009:
> What version of the packages are you using? Can you give the output of:Sure thing:
> ghc-pkg list|grep failure
Â Â(control-monad-failure-0.4), (control-monad-failure-0.5.0),
Â Âcontrol-monad-failure-mtl-0.5.0, cpphs-1.8, cpphs-1.9,
Â Âfailure-0.0.0.1, happstack-0.3.2, happstack-data-0.3.3
[email protected]:~$ cabal upgrade failure
No packages to be installed. All the requested packages are already installed.
If you want to reinstall anyway then use the --reinstall flag.
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