Cargo Features

fixed-typed-arena has no features set by default.

[dependencies]
fixed-typed-arena = { version = "0.3.3", features = ["dropck_eyepatch"] }
dropck_eyepatch = add-syntax

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.

add-syntax dropck_eyepatch?