Diffing Functionality on top of pyecore

[chtinnes]

For several downstream use cases, a diffing functionality similar to EMFCompare would be desirable.

What is the current state of the discussion w.r.t. to diffing in pyecore?

[aranega]

Hi @chtinnes,

Thanks a lot for the suggestion! Currently, unfortunately, there is nothing production ready for a diff in PyEcore, currently, mainly by lack of time to properly create a new project and maintain it. In the past, I made some experiments with DeepDiff that gave promising results, but out of my memory, there was a little bit more of effort to do to have something close from EMFCompare. The interesting thing about DeepDiff is that it's able to perform a diff on pure python objects. Consequently, even if you are defining attribute relying on custom native resources (e.g: Python AST nodes from the ast module), it was able to produce "diff" things anyway.

I should experiment more with it, I tested version 5.0 back in the days, and the new versions looks like they introduced interesting features (support for UUIDs, strict checking,...)