We are using xml underneath, the problem is that since the graph can be cyclical the nodes and links are in separate lists, which makes a standard diff quite a

We are using xml underneath, the problem is that since the graph can be cyclical the nodes and links are in separate lists, which makes a standard diff quite a poor tool. As you say, converting to dot and making a tool for that is probably the way to go. I was just hoping that I could do just the first step. I was thinking about SVG as well, but in that case the diff would have to be very specifically tailored and not much of a reusable brick.