[tialaramex]

Note that git's diffs and merges are customisable. If somebody wants to put in the effort for a particular format, they can write tools that perform these two specific tasks and git can be told "Here are the tools for this repo" and deliver the benefits of improved tooling. It's definitely possible that could be worth doing for a DAW if used with git.

Git even understands that it's possible that you can neatly summarise a change in text (for display e.g. as part of the change log) but that summary is not actionable (so the data stored to implement that change is different), e.g. I believe git's man pages provide an example showing how you can get EXIF from a JPEG so that your git tools say the change was from "Photo of Pam and mummy" to "Cropped image of Pam" when actually it's a huge binary data change that is unintelligible to reader.

[Arelius]

I mean, If git's been around for ages by now, and this doesn't exist for even json + xml already and robustly, there must be some sort of problem?

[jacquesm]

The problem is quite simple: if it isn't supported by the base installation it might as well not exist. Github/Gitlab is how most companies and people now experience git, and afaik you can't add those custom plug-ins to those platforms easily if at all.

[wizzwizz4]

The tools don't preserve the literal contents of the file; only the JSON / XML semantics. This makes them unpopular. (Source: I decided not to use them because of this; I needed hashes to remain stable for some reason I can't quite recall.)