How possible would it be to implement a clipping mask to the donut chart?

[corkeja01]

In the image below you can see the middle shape doesn't create a full circle I'd want to add a clipping mask in the svg? would this be possible?
Note: I Know they're alternatives but SVG is my preferred option rather than canvas

[benpickles]

Very possible but not with Peity's internal donut chart implementation, you'd have to implement a custom chart: http://benpickles.github.io/peity/#custom-charts