Cargo Features

[dependencies]
abio = { version = "0.3.0", default-features = false, features = ["std", "derive"] }
default = derive

The derive feature is set by default whenever abio is added without default-features = false somewhere in the dependency tree.

std
derive default = abio_derive

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.

abio_derive derive