Cargo Features

russh-keys has no features set by default.

[dependencies]
russh-keys = { version = "0.47.0-beta.1", features = ["legacy-ed25519-pkcs8-parser"] }
legacy-ed25519-pkcs8-parser = yasna

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

yasna legacy-ed25519-pkcs8-parser?