@stefan_hessbrueggen I am not in the know about the GNOME/libxml2 developments, but a while ago a blogpost by @faassen got me curious. Took me a while to find it again, but here it is: https://blog.startifact.com/posts/xee/

#Xee is an almost complete #XPath31 implementation plus incomplete #XSLT3 inplementation, in #Rust. Here is the repo (last commit from Oct 2025): https://github.com/Paligo/xee

Probably something to keep an eye on...