Cargo Features

[dependencies]
merkle_light = { version = "0.4.0", default-features = false, features = ["std", "bitcoin", "chaincore", "crypto_bench"] }
default = std

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

std default
bitcoin = ring, rust-crypto
chaincore = rust-crypto
crypto_bench = rand, ring, rust-crypto

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.

ring bitcoin? crypto_bench?

Enables ring ^0.16.20

rust-crypto bitcoin? chaincore? crypto_bench?
rand crypto_bench?