[Bug 1278329] Re: [FFe] Qt 5.2

[Timo Jyrinki]

You're correct that development release is now kept releasable each day,
and each daily Ubuntu Touch image should be flawless
(http://ci.ubuntu.com/smokeng/trusty/touch/). The new "CI Train"
integration does not allow code merges to trunks unless they don't
regress those results.

The effects of the development method may not have been discussed enough
after the "CI Airline" vUDS discussion in November, from which the
current method has evolved. Everything is now worked in silos until they
are perfect, and there are tools to allow that. With Qt it's more manual
ensuring but still similar to smaller components. Parallel work until
all but polishing problems are fixed.

The current Qt 5.2.x blockers include:
- QA team has started testing 5.2.0, but only this week we've gotten tools to create system images using the PPA to be able to get more automated testing
- No multimedia related apps work yet because of lacking qtmultimedia-touch (Multimedia team is working on this)
- Some critical bugs making Touch images unusable like the inability to turn the screen back on once it has blanked
- The V4 engine is seen a bit risky considering the already identified bugs, so the complete 5.2.1 release seems better all around
- 5.2.1 has not been tested yet by QA team. The packaging syncs I've done with 5.2.1 may cause some rebuild problems since the mkspecs directory changed.
- Debian has part of the 5.2.1 in experimental now, with more coming. I'd like to see all of 5.2.1 syncable from Debian for those modules that can be synced (most of them).

Lastly, the process of uploading and building the 20 Qt modules and
rebuilding 80 source packages, taking into account the dependencies and
architectures, may take several days in case there are any last minute
surprises that weren't noticed even with careful preparation.

All in all, 2.5 weeks from now sounds like something when pieces could
fall together. I'm putting 5.2.1 into use right now, which should be the
start of the final push.

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Title:
  [FFe] Qt 5.2

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