It appears that y/n and other booleans is not supported.

[jonathan-s]

If you try out the values specified here > https://yaml.org/type/bool.html It won't work as expected, it will not create a dictionary with a boolean, instead it will create dictionary with a string which is not what we expect in this case.

Tracking this here > https://github.com/dtolnay/serde-yaml/issues/379

[jonathan-s]

I just learned that version 1.1 of the yaml spec has one set of accepted booleans whereas version 1.2 of the yaml spec has smaller set of accepted booleans. So the resolution to this should be to update the readme and make clear that this package only supports the 1.2 version of the yaml spec.