Labelling on Pie Charts

I would like to render a pie chart with labels indicating amounts inside the segments that are always visible. Also, I would like to specify that these labels should be percentages and or unscaled amounts.

Is there a way to do this already (maybe with a combo of config options).

The issue names no files, tests, or entry points. Start by locating pygal's pie-chart rendering and label configuration, then check whether existing options cover always-visible labels, percentages, and unscaled amounts. Done means implementing the requested behavior or documenting that existing configuration already supports it, with tests for the label output.

Written by the indexing model from the issue text.