Cargo Features

[dependencies]
chains = { version = "0.1.0", default-features = false, features = ["std", "zip", "mini"] }
default = std, zip

These default features are set whenever chains is added without default-features = false somewhere in the dependency tree.

std default

Enables std of once_cell, serde, and serde_json

once_cell:

Enables once_cell::sync module.

zip default

Enables zip ^0.6

mini

CHAINS has 4 features without comments.