Cargo Features

foreignc_derive has no features set by default.

[dependencies]
foreignc_derive = { version = "0.1.1", features = ["template"] }
template = foreignc_template, serde, serde_json

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.

foreignc_template template?
serde template?
serde_json template?