[Haskell-cafe] arrows-.02 fails when rebuilding ghc 6.6.1

Ross Paterson ross at soi.city.ac.uk
Sun Aug 26 17:23:46 EDT 2007

On Sun, Aug 26, 2007 at 11:16:17PM +0200, Luc TAESCH wrote:
> I try download and build 6.6.1 ( as ubntu has just 6.6 on package) and
> most went ok ( compiler and most libs) but arrows
> i tried and download arrow 0.2 from hackage but no more success

You need to change the Extensions line in arrows.cabal to

Extensions: MultiParamTypeClasses, UndecidableInstances

More information about the Haskell-Cafe mailing list