Cargo Features

[dependencies]
express-relay = { version = "0.3.0", default-features = false, features = ["cpi", "no-log-ix-name", "idl-build"] }
default = cpi

The cpi feature is set by default whenever express-relay is added without default-features = false somewhere in the dependency tree.

cpi default
no-entrypoint no-idl no-log-ix-name
idl-build

Enables idl-build of anchor-lang

ExpressRelay has 4 features without comments.