Cargo Features

[dependencies]
staging-sp-ark-bls12-381 = { version = "0.4.2", default-features = false, features = ["std"] }
default = std

The std feature is set by default whenever staging-sp-ark-bls12-381 is added without default-features = false somewhere in the dependency tree.

std default

Enables std of ark-bls12-381-ext and sp-crypto-ec-utils

staging-sp-ark-bls12-381 has 2 features without comments.