Color modules based on how they parallelize

[Profpatsch]

Currently, graphmod colors modules based being the same package. This information is already conveyed by the grey bounding boxes.

One property I’m usually interested in is how well modules parallelize, aka how many bottlenecks there are in the build and how many other modules a module has to wait on before it is built. Especially with a more “broken” graph, graphviz will start to draw arrows not just from the top to the bottom, but also going upwards again:

What if we colored the graph from the main function, so that every node gets a color based on how “deep” in the tree it is placed. Or maybe there is an even better coloring to visualize how independent modules can be compiled from each other?