cabal: confusing dependencies conflict between ghc-6.10.1 and process

[Duncan Coutts]

On Thu, 2009-04-16 at 10:52 +0200, Martijn van Steenbergen wrote:
> Duncan Coutts wrote:
> > For future reference this is now in the new Cabal FAQ:
> > http://haskell.org/cabal/FAQ.html
> > 
> > which is now linked from the cabal home page.
> 
> Neat. That's gonna be helpful.
> 
> "The default version of the parsec package is version 2.x."
> 
> Is parsec special in this regard?

Only slightly special:

http://hackage.haskell.org/packages/archive/preferred-versions

-- A global set of preferred versions.
--
-- This is to indicate a current recommended version, to allow stable and
-- experimental versions to co-exist on hackage and to help transitions
-- between major API versions.
--
-- Tools like cabal-install take these preferences into account when 
-- constructing install plans.
--
base < 4
parsec < 3
HaXml == 1.13.*
QuickCheck < 2


Duncan