Arrow without `>>>'

[Ross Paterson]

On Thu, Jan 24, 2008 at 03:10:39PM +0200, Valery V. Vorotyntsev wrote:
> On 1/23/08, David Menendez <dave at zednenem.com> wrote:
> > On Jan 23, 2008 12:20 PM, Valery V. Vorotyntsev <valery.vv at gmail.com> wrote:
> > > I've built GHC from darcs, and...
> > > Could anybody tell me, what's the purpose of Arrow[1] not having `>>>'
> > > method?
> >
> > It's derived from the Category superclass.
> 
> Yes, it is.
> 
> The right question: how to build `arrows' in such circumstances?

To build with the darcs version of the base library (built with GHC),
you'll need the darcs version of the arrows library, which I think is
right now:

darcs get http://darcs.haskell.org/packages/arrows