All code that defines Arrow instance breaks, because (>>>) is not a method of Arrow.  I have a lot of such instances, so I'm now adding #if directives to test for ghc-6.9 or later.  - Conal

On Mon, Jul 14, 2008 at 8:38 PM, Don Stewart <dons@galois.com> wrote:
conal:
>    I want to use ghc-6.9 for improved support of type families, but I see
>    that the change to the Arrow interface breaks some of my libraries (since
>    (>>>) is no longer a method of Arrow).  Will this change really be in

(>>>) has been reexported from Control.Category through Arrow for a few
months.  Does that fix things, or is your code still broken?

-- Don