Precise X staging

[Scott Kitterman]

On Saturday, December 24, 2011 02:26:08 PM Chase Douglas wrote:
> Hi all,
> 
> At UDS we decided to use the X.org 1.11 server with the input subsystem
> backported from 1.12 for multitouch. The upstream 1.12 server
> development branch just landed the multitouch support, so I packaged it
> up for Precise.
> 
> Ubuntu has had multitouch support in our X server since 11.04, but it
> was a prototype implementation. The protocol specification and
> implementation merged upstream is very similar, but includes a few key
> modifications.
> 
> Over the past week, Chris Halse-Rogers and I have created a staging PPA
> (ppa:ubuntu-x-swat/x-testing) for all the X packages and any packages
> that need fixes due to the input protocol changes. This PPA is as much
> for our own development benefit as it as a chance for others to test it
> out. We would gladly appreciate feedback on ubuntu-x at lists.ubuntu.com.
> However, note that the code is still rather unstable.
> 
> We need to determine what to do about the qt4-x11 package in particular.
> The Ubuntu package includes a patch that enables multitouch using the
> prototype implementation. I have reworked the patch for the upstream
> implementation (it was far easier than I thought it would be :), and it
> is available in the ppa as well. For the transition, we could do one of
> the following:
> 
> 1. Drop the patch from qt4-x11 now, and add it back in after the X
> packages land in precise.
> 
> 2. Synchronize the X package and Qt package uploads and use "Breaks"
> debian control clauses to hold back packages during the transition period.
> 
> I proposed option #1 to Scott on irc this past week. I think it's the
> least hassle because it does not require significant synchronization
> between the kubuntu packagers and the ubuntu-x teams. There are no
> API/ABI changes from the patch, it merely hooks up the plumbing in the
> qt x11 implementation. I am also unaware of any applications in the
> archive using the qt multitouch capability yet. However, I have no
> issues with either approach. Any thoughts?

If you've got the patch for qt4-x11, I think it'd be best to just land that 
change with your X changes when it's ready.  I don't see any need to regress 
qt4-x11 in the mean time.

Scott K