Turns out applying the patch goes fine, but it doesn't compile, I had to backport another change to make it actually build. The resulting .deb is too big to attach to this thread, but I have uploaded it here: http://people.debian.org/~mbanck/harmattan/telepathy-gabble_0.12.6+0maemo12+0m7+nmu1_armel.deb I have not tested it, mostly because my N9 is having hardware issues right now, so let me know whether this is possible to install and/or works.