1302783 - Support dot output from task-graph generation

Status: RESOLVED WONTFIX

(Firefox Build System :: Task Configuration, task)

Description

[Dustin J. Mitchell [:dustin] (he/him)]

The `./mach taskgraph <subcommand>` commands all output task graphs, but they do so in a textual format that doesn't show the interconnections between tasks.

The graphviz project provides a utility called "dot" which can take a text file as input and produce an image file showing that graph.  In fact, it's the tool bugzilla uses to create dependency graphs.

It would be great to have an option for all of these `./mach taskgraph` subcommands that would output the graph in dot format, so that it could then be fed to dot to create an actual graph.  Note that there's an `altgraph` package in-tree (`python/altgraph`) that may be useful for this purpose.

Comment 1

[Dustin J. Mitchell [:dustin] (he/him)]

I've never actually wanted to see this.  I think it would be easy enough to translate the JSON to dot if someone was interested (and maybe at that point they add the support to the taskgraph).