We have been hearing that the upstream community is now actively looking at merging all the libical forks. We would also like to merge the libical present in GNOME with the upstream maintained at http://freeassociation.sourceforge.net/ if am correct. I had a look at the sources in main stream sources, the sources do not have the last six month changes in svn GNOME trunk. So these have to be merged with main stream. We have a bug for the same where this is being discussed. We would like to discuss the same with the upstream maintainer and get things done. Am not sure if we still have the window to add libical as a external dependency for GNOME so that all applications can dynamically link to it. So if we have enough time, it would be great to have this done.