blessed.rs is fairly new. And if you look for yaml on this page, it links to serde; and serde_yaml being deprecated (with no blessed fork yet) is precisely part

blessed.rs is fairly new. And if you look for yaml on this page, it links to serde; and serde_yaml being deprecated (with no blessed fork yet) is precisely part of the issue discussed in the parent article: https://lib.rs/crates/serde_yaml https://lib.rs/crates/serde_yaml ; and that's perfectly fine for the maintainers to declare, it was all open source with no warranty whatsoever.