Cargo Features

cacaos = { version = "0.5.1", default-features = false, features = ["eip4361"] }
default = eip4361

The eip4361 feature is set by default whenever cacaos is added without default-features = false somewhere in the dependency tree.

eip4361 default = hex

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.

hex eip4361