Cargo Features

[dependencies]
vela = { version = "0.0.1", default-features = false, features = ["sync", "async"] }
default = sync

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

sync default = crossbeam
async

Enables full of tokio

tokio:

enable everything

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.

crossbeam sync
tokio async?