Cargo Features

[dependencies]
peggen-core = { version = "0.3.1", default-features = false, features = ["std", "bumpalo", "trace"] }
default = bumpalo

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

std trace?
bumpalo default

Enables bumpalo

trace = std

peggen-core has 4 features without comments.