[Xmonad] darcs patch: support self-modifying layouts.

[Donald Bruce Stewart]

droundy:
> On Mon, Jun 25, 2007 at 02:50:37PM +1000, Donald Bruce Stewart wrote:
> > > Sat Jun 23 13:14:47 PDT 2007  David Roundy <droundy at darcs.net>
> > >   * support self-modifying layouts.
> > > 
> > 
> > This looks reasonable, though there is some growing feature creep in
> > this layout stuff :)
> 
> Yeah, but this particular one I believe makes Layouts fully extensible.  It
> removes the need for unsafe behavior that's already been implemented
> (LayoutHooks, in particular).  After this, all I forsee is a refinement of
> the API to make it safer and simpler (not that I see how to do so, but I am
> sure it must be possible).

Ok, can you resend your new doLayout patch to the core, and the
associated changes to XMonadContrib, in a new mail. Just so I can get
that in isolation, and review it.

We're pretty close to feature cut off for 0.3.

-- Don