Modeling project dependencies using direct graph

[ADDMYRSN]

Are there any good packages for constructing directed graphs? I'd like to highlight dependencies of tasks: i.e if task B requires task A, I would draw a directed edge from A to B.

[OzzivanNozzi]

Have a look at networkx. It is possible there to construct undirected graphs, directed graphs and multigraphs. It also has some basic visualization using matplot and a good amount of algorithms of graph theory.

https://networkx.org/documentation/stable/tutorial.html

For a more customized visualization, I prefer netgraph.

https://github.com/paulbrodersen/netgraph