Cargo Features

[dependencies]
polkadot-core-primitives = { version = "15.0.0", default-features = false, features = ["std"] }
default = std

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

std default

Enables std of parity-scale-codec, scale-info, sp-core, and sp-runtime

polkadot-core-primitives has 2 features without comments.