Cargo Features

[dependencies]
jen = { version = "1.7.0", default-features = false, features = ["build"] }
default = build

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

build default = clap, 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.

clap build

Enables clap

optional dependencies only use for CLI

serde build
serde_json build