Cargo Features

[dependencies]
batch = { version = "0.1.1", default-features = false, features = ["codegen"] }
default = codegen

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

codegen default = batch-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.

batch-codegen codegen