Cargo Features

[dependencies]
ed25519-dalek-bip32 = { version = "0.3.0", default-features = false, features = ["std"] }
default = std

The std feature is set by default whenever ed25519-dalek-bip32 is added without default-features = false somewhere in the dependency tree.

std default

Enables std of derivation-path, ed25519-dalek, and sha2

ed25519-dalek-bip32 has 2 features without comments.