Comment 3 for bug 1155968

I have been using zeitgeist engine (zeitgeist-core) built against libzeitgeist1 with applications built against libzeitgeist1.

It is working because all the communication happens over dbus. Any changes which took place was at library level. DBus API remained nearly the same, but the programmer facing abstraction of API was vastly improved.

Theoretically, the apps built against libzeitgeist1 do not need to be rebuilt to work against zeitgeist-core built using libzeitgeist2

I would be sooner working on moving everything to libzeitgeist2

libfolks-telepathy25 has been patched upstream to use libzeitgeist2 IIRC. It should make it into saucy if released on time