Cargo Features

futures-channel = { version = "0.3.29", default-features = false, features = ["std", "alloc", "sink", "unstable", "cfg-target-has-atomic"] }
default = std

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

std default = alloc

Enables std of futures-core

Affects futures-channel::mpsc

alloc std

Enables alloc of futures-core

Affects futures-channel::oneshot

sink = futures-sink

These features are no longer used.
TODO: remove in the next major version.


Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features.

futures-sink sink?