Cargo Features

fallacy-clone has no features set by default.

[dependencies]
fallacy-clone = { version = "0.1.1", features = ["derive"] }
derive = fallacy-clone-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.

fallacy-clone-derive derive?