[Haskell-cafe] Use of the Try typeclass

[Alexander Dunlap]

On Wed, Dec 30, 2009 at 10:54 PM, Edward Z. Yang <ezyang at mit.edu> wrote:
> 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:
>>
>> ghc-pkg list|grep failure
>
> Sure thing:
>
>    (control-monad-failure-0.4), (control-monad-failure-0.5.0),
>    control-monad-failure-mtl-0.5.0, cpphs-1.8, cpphs-1.9,
>    failure-0.0.0.1, happstack-0.3.2, happstack-data-0.3.3
>
> Additionally:
>
> ezyang at javelin:~$ cabal upgrade failure
> Resolving dependencies...
> No packages to be installed. All the requested packages are already installed.
> If you want to reinstall anyway then use the --reinstall flag.
>
> Cheers,
> Edward
>

Upgrade to control-monad-failure-mtl 0.6.0 and control-monad-failure 0.6.0.

Alex