Cargo Features

toql_core has no features set by default.

[dependencies]
toql_core = { version = "0.4.2", features = ["serde_feature"] }
serde_feature = serde

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.

serde serde_feature?