[errnoh]

Interesting topic. I haven't gone as deep in this rabbit hole but I've also written "similar" tool that I've used as a visual help [1] when reading programs written by other people. It's been useful in understanding bottlenecks and weird code patterns / dependencies. I've even printed the graph sometimes and written down notes on the paper, drawing circles around logical groups, etc.

I ended up going with separate color for each type / package.

[1] Screenshot of a simple piece of code: https://imgur.com/a/Pr9dkkd

[divan]

Nice. I've been doing similar drawings a lot – on whiteboard, on paper, on tablet, a few times even drawing them to use as the argument in pull-request debates, because words weren't enough to show the point.