In Moon in a Dead Eye, from the 'slyly funny' [Sunday Times] Pascal Garnier, the inhabitants of a new retirement village find their territory encroached upon when a group of travellers sets up camp on the outskirts.

'The final descent into violence is worthy of J G Ballard' The Independent 

Given the choice, Martial would not have moved to Les Conviviales. But Odette loved the idea of a brand-new retirement village in the south of France. So that was that. At first it feels like a terrible mistake: they're the only residents and it's raining non-stop. Then three neighbours arrive, the sun comes out, and life becomes far more interesting and agreeable. Until, that is, some gypsies set up camp just outside their gated community...