bug#57691: 29.0.50; image-tests failures

[Stefan Kangas]

Eli Zaretskii <eliz@gnu.org> writes:

> librsvg 2.40.x is the last version that doesn't need a Rust compiler
> to build, so I think we should keep it supported for the observable
> future.

Interesting.

I guess the likelihood of more libraries going in that direction will
tend to increase over time, a development that might be encouraged by
things like Rust in Linux kernel modules.