This week was a good week for coding, and the best part about it: most of my changes are now in s-c’s upstream trunk.
I started out trying to populate s-c database with only a few applications; this meant updating the update-software-center tool, and also changing some bits on the database update module. I was glad to discover that some functionality I have planned to develop in week 6 (parsing AppStream app-data xmls) was already there, thus making my job easier
After that, work continued by abstracting backend parts, such as InstallBackend and TransactionsWatcher, and also isolating as much as posible apt and apt_pkg usage. I have then expanded the PackageInfo abstraction to implement a dictionary like interface, containing _Package objects (before that, apt.Package were returned). It took some small steps, and sometimes mistakes from my side, but in the end, I guess I have got it done right. Work still needs to be done regarding usage of candidate and installed properties (which currently are apt.Version objects), and also on AptCache try_install_and_*depends methods (this should be either abstracted, either made apt-backend specific.
At the end of the week, preparing the next point of focus, I have managed to get a developing environment with PackageKit with Python gobject introspection data. Here comes the bad news: the py GI for packagekit is not ready for prime time. Reasons for that: GI is relatively new, there are no other users of PK from Python (only C and Vala). With help from ximion, hughsie, dantti and tomeu (and many other kind souls on #PackageKit, #introspection or #python), we isolated the problem inside pygobject, apparently an incomplete implementation of GPtrArray. I hope to get it fixed next week , so that I can continue work with PK.
Although I am a bit worried seeing segfaults in Python, it’s a sunny day out here (so I can finish my report on a non-technical note) so I’m sure that with help from these awesome people on IRC, problem will be solved, and my project will continue according to the plan.
Next week: gi ninja and more PK!