proposal #2254: have Control.Arrow re-export (>>>) and (<<<)
dons at galois.com
Thu May 1 13:14:37 EDT 2008
> On Wed, Apr 30, 2008 at 04:55:47PM -0700, Don Stewart wrote:
> > ross:
> > > A previous proposal:
> > >
> > > http://hackage.haskell.org/trac/ghc/ticket/1773
> > >
> > > split the Arrow class, making (>>>) and (<<<) functions in
> > > Control.Category. This breaks programs that use Control.Arrow.
> > >
> > > To avoid some of the breakage, the proposal is that Control.Arrow should
> > > re-export (>>>) and (<<<), imported from Control.Category.
> > This patch has been applied (xmonad was broken due to the change, so I
> > thought it best to act).
> I thought we had a process for API changes.
Yeah, that's my fault. I saw Duncan submitted the proposal about a week
ago, and no one had objected, and then I ran into xmonad breaking due to
> I'm not sure what the right thing is here. I usually prefer to avoid
> re-exports because they create problems with warnings.
If it is objected to we can revert.
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