Cargo Features

rustpython-common has no features set by default.

[dependencies]
rustpython-common = { version = "0.4.0", features = ["threading"] }
threading = parking_lot

Affects rc::PyRc

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.

parking_lot threading?