Cargo Features

TopoSort has no features set by default.

[dependencies]
topo_sort = { version = "0.4.0", features = ["indexmap-serde"] }
indexmap-serde = serde

Enables serde-1 of indexmap ^1

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.

indexmap indexmap-serde?

Enables indexmap ^1

serde indexmap-serde?