Cargo Features

clacks has no features set by default.

[dependencies]
clacks = { version = "0.0.2", features = ["rustfmt-codegen"] }
rustfmt-codegen = rustfmt

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.

rustfmt build rustfmt-codegen?