[Haskell-cafe] Cabal message problem.

[Ivan Lazar Miljenovic]

On 16 December 2010 13:35, Magicloud Magiclouds
<magicloud.magiclouds at gmail.com> wrote:
> Hi,
>  I see this kind of information a lot when I using cabal to install
> package. Or sometimes same packages both exist in global and user
> space, which is a "shadowed by" message.
>  How to resolve that? Thanks.
>
> Resolving dependencies...
> <command line>: cannot satisfy -package Cabal-1.10.0.0:
>    Cabal-1.10.0.0-9ac678c7f1e4f8dd31bac0e19f600698 is unusable due to
> missing or recursive dependencies:
>      process-1.0.1.4-24e3819e5c17aaf49bfec6a0ab739420
>    (use -v for more information)

This means you built Cabal-1.10.0.0 against process-1.0.1.4, but have
subsequently upgraded (or downgraded or uninstalled) process.  As
such, rebuild Cabal.

"ghc-pkg check" will give you a list of all broken packages.

-- 
Ivan Lazar Miljenovic
Ivan.Miljenovic at gmail.com
IvanMiljenovic.wordpress.com