Am 13.10.2015 um 02:56 schrieb Scott Kostyshak <skost...@lyx.org>: > On Tue, Oct 13, 2015 at 09:20:49AM +0900, Cyrille Artho wrote: >> Jean-Marc Lasgouttes wrote: >>> Le 12/10/2015 12:38, Liviu Andronic a écrit : >>>> So as far as Trusty users are concerned (likely a big chunk of the >>>> Ubuntu user base), if 2.2.0 depends on Qt 5.6 they will be locked into >>>> Qt 4.8 for the entire 2.2.x series. >>>> >>>> I don't know if the benefits of depending on Qt 5.6 outweigh such >>>> concerns. Maybe if we relied on ifdefs to support in parallel Qt 5.2 >>>> and 5.6, but I hear this can cause maintenance nightmares... >>> >>> The question is not about requiring qt 5.6 as I understand it. But the fact >>> is that it is required for proper HiDPI support and will be used at least >>> for the mac binaries. >>> >>> As far as linux is concerned, we require Qt 4.5, which should be good >>> enough :) >>> >>> JMarc >>> >> In that case it's a good opportunity to test Qt 5.6 with the next alpha >> release. > > Sounds good. Do note though that it would be Qt 5.6 *beta*. I still > think it makes sense to test our alpha with their beta. If things go > well, then we know that we should stick with 5.6 and there is not much > discussion to be had. If there are some disastrous bugs that we > attribute to 5.6, then well the alpha has served its purpose and we will > need to discuss whether they are bugs that will be solved by the final > release of 5.6. I'm most concerned that there might be something that > LyX needs to change on our end to adapt to 5.6, and if that is the case > we need to know what that is as soon as possible. > > Any other opinions? > > Stephan and Uwe do you forsee any packaging problems with using Qt 5.6 > beta as opposed to Qt 5.5 ?
No. I need only the required disk space and cpu resources to compile and install Qt 5.x.y in parallel to the other versions. (This was growing from release to release last years.) Sometimes there is a mandatory change of the configure flags for a new version. But this wasn't a show stopper in the past. Usually I'm solving this with a change of the build script for Mac OS. >> More and more people have high-res displays so I think being proactive with >> picking up a new library that supports them is the right way to go. >> >> Once high-res displays are properly supported and the (Qt) bugs worked out, >> we can again slow down our adaptation of Qt 5.x (and stick with 5.6 or 5.7, >> depending on what works best in the near future). HiDPI is possible with 5.4 too. I've read the Qt folks plan to make 5.6.x a stable release with long term support for older platforms[1]. Stephan [1] http://www.phoronix.com/scan.php?page=news_item&px=qt-5.6-lts-gauge
