[ivansavz]

This is very interesting and a much needed tool. I have been searching for a tool like this for a long time. There are so many tree-like structures that I'm sure there will be interesting use cases...

I was recently working on a similar tool[1] but specific to the domain of "content trees" that consist of content nodes organized into a hierarchical structure. In my case each tree node has a persistent `content_id` associate with the underlying content file and independent of its position within the tree, which allows me to detect "move" operations[2] (a node with the same `content_id` appearing in a different place in the tree).

The use case is for educational content: Kolibri channels[3] are these huge trees that consist of thousands of nodes and it's difficult to know what has changed when we create new versions of the channels. I tried all kinds of general-purpose diffing tools and failed miserably so I started working on treediffer. It's almost done; I hope to finish it later this fall, and will look at graphtage to see how it works.

[1] https://github.com/learningequality/treediffer [2] https://treediffer.readthedocs.io/en/latest/diff_formats.htm... [3] https://kolibri-demo.learningequality.org/en/learn/#/topics