The town has good facilities for this most french of french pastimes.
I found intense games going on around the entrance to Jardins De la Fontaine and towards the southern end of the Boulevard Jean Jaures near the Pyramid (which is actually a memorial to the war dead including the victims of concentration camps)
There were several games of petanque going on in the main park near the fountains. Each game was being strongly contested. All had brought their own sets of balls and cochonnets.