On 02/19/2015 02:19 AM, Christian Dywan wrote: > I confirm that several unit tests don't pass. > > https://bugs.launchpad.net/u1db-qt/+bug/1423473 > Hmm, can these tests be run as autopkgtests? That should've blocked Qt 5.4 from hitting vivid-proposed.
> On 18.02.2015 19:51, Bogdan Cuza wrote: >> I have just received a vivid-proposed image and noticed that U1db no >> longer loads the defaults (which was probably a processed QVariantMap >> from JS). Did this change break it/could it break even more components? >> >>> Date: Tue, 17 Feb 2015 09:37:38 +0200 >>> From: [email protected] >>> To: [email protected] >>> CC: [email protected] >>> Subject: [Ubuntu-phone] Qt 5.4 QVariant change and module news >>> >>> Qt 5.4 is now in vivid, powering Ubuntu Phone starting with devel >>> image #102, Kubuntu's Plasma 5 and also the Unity 8 desktop preview. >>> No app changes are generally needed, but there is a change in QVariant >>> that may be relevant to C++ using apps. >>> >>> == QVariant change in Qt 5.4 == >>> >>> QVariant has changed a bit in Qt 5.4, although in a way that fixing >>> its use does not affect negatively use in Qt 5.3 either. >>> >>> Quote: ”When a JavaScript object/array is passed to C++ through a >>> QVariant, the engine no longer immediately converts the object >>> recursively into a QVariantMap or QVariantList but instead stores a >>> QJSValue in the QVariant. This prevents a loss of data when the JS >>> object contains non-primitive types such as function objects for >>> example. Code that expects the variant type to be exactly >>> QVariant::Map or QVariant::List may need to be adapted. Registered >>> conversion functions however ensure that code that merely calls >>> toMap() or toList() continues to work.” [QTBUG-40431] >>> >>> Examples of fixes: >>> - Oxide: >> https://code.launchpad.net/~aacid/oxide/qt54_variantjs/+merge/248765 >>> - Ubuntu UI Toolkit: >>> >> https://code.launchpad.net/~aacid/ubuntu-ui-toolkit/statesaver_54/+merge/247986 >>> >>> Another noted small difference: >>> ”In Qt 5.4 an alias to a null variable is correctly null instead of >>> undefined like it was in Qt 5.3” >>> >>> == Status of less supported Qt modules == >>> >>> It's useful to remember that not all of Qt we have in Ubuntu is >>> supported by the Qt Project: >>> >>> - qtlocation: Upstream releases this as part of their releases, but >>> they emphasize that Qt Positioning is API stable while Qt Location >>> might change. Still, this should be pretty safe to use and will >>> probably be declared stable soon. >>> - qt3d: The original module has not been developed for two years. A >>> complete rewrite has been in development during that time. Qt 3D 2.0 >>> will be available as a preview with Qt 5.5. >>> - qtsystems: Semi-active development. Qt 5.4 absorbed QStorageInfo to >>> be official part of qtbase, but it is a bit different and oddly does >>> not have QML support at this point. We include the SystemInfo module >>> on the phone images, but currently not the Publish Subscribe or >>> Service Framework modules from the same source. >>> - qtpim: Semi-active development, but can be considered supported >>> since our Renato is one of the upstream developers. Ubuntu uses the >>> Contacts/Organizer extensively in phone/scheduling apps. >>> - qtfeedback: Stable in the sense that there is no development >>> happening. It's also a very small module. If you are interested in the >>> module, consider taking an active role in the Qt Project where >>> contributions would surely be welcome. >>> >>> -Timo > > > > -- Jamie Strandboge http://www.ubuntu.com/
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