The Bibliotopia Literary Weekend will take place from the 4th to the 6th May at the Jan Michalski Foundation in Montricher. Some events are in French, others in English or German. See programme here.
If you have never visited this literary centre/foundation, it is the most extraordinary modern building set high up in the hills in the village of Montricher (above Morges), it has a library of over 65,000 books and is well worth a visit. It is also a residence for writers, see site here.