Cargo Features
sp1-curves has no features set by default.
[dependencies]
sp1-curves = { version = "3.3.0", features = ["bigint-rug"] }- bigint-rug = rug
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.