I updated my bzr checkout of calibre today, and noticed that the 0.6.0 branch has been merged into the trunk. When attempting to build it via "python setup.py build", I get some errors for the various gui2/wizard/*.ui files that reference QWizardPage:
PyQt4.uic.exceptions.NoSuchWidgetError: Unknown Qt widget: QWizardPage
It appears that my Ubuntu setup has the QWizardPage files (e.g. /usr/include/qt4/QtGui/QWizardPage), so I'm not sure what I'm missing. Python support? I substituted QWidget for QWizardPage in the various affected *.ui files, and then it built fine and I'm able to run calibre (e.g. the initial first-run wizards worked, and I converted a book).
Any hints on what I'm missing? (Besides PoDoFo, which doesn't appear to be packaged for Ubuntu, but which doesn't appear to matter since I'm not fiddling with PDF files.)