[xmonad] Why isn't mappend for Query flipped?
vogt.adam at gmail.com
Tue Jun 9 21:19:04 EDT 2009
* On Tuesday, June 09 2009, Brent Yorgey wrote:
>I propose to change the Monoid instance for Query so that
> mappend = liftM2 (flip mappend)
>Of course, this has the undesirable side effect of breaking any
>configs where the order actually matters. But it would certainly make
>more sense moving forward, IMO.
I saw this too when writing XMonad.Hooks.InsertPosition in contrib.
It would be nicer to reflect the change in the type:
type ManageHook = Query (Dual (Endo WindowSet))
But unfortunately, this requires some simple changes to contrib:
s/Endo/(Dual . Endo)/ should do. Some configs may break too.
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