Cargo Features

i-build has no features set by default.

[dependencies]
i-build = { version = "1.0.0-beta.3", features = ["codegen"] }
codegen = i-codegen

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.

i-codegen codegen?