Comment 0 for bug 1267805

Please see https://launchpadlibrarian.net/162108956/buildlog_ubuntu-trusty-amd64.signon_1%3A8.55%2B14.04.20131212-0ubuntu1%2Bqt52~test1_FAILEDTOBUILD.txt.gz for details.

It's not yet possible to upgrade to Qt 5.2 easily, because of build failures like this bug report that prevent full dist-upgrade from the PPA. Therefore, if you are using chroot / virtual env or otherwise ok with removing Unity temporarily, see https://lists.launchpad.net/ubuntu-phone/msg05690.html for an alternative upgrade method (the quoted part) that can be used already to setup Qt 5.2 environment. If interested, see the dependency chain at http://pad.ubuntu.com/qt52-dependencies)

Not having signon rebuild prevents rebuilding various account related other packages.