Cargo Features

quasi has no features set by default.

[dependencies]
quasi = { version = "0.32.0", features = ["with-syntex", "unstable-testing"] }
with-syntex = syntex_errors, syntex_syntax
unstable-testing = clippy

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.

clippy unstable-testing?
syntex_errors with-syntex?

Enables syntex_errors ^0.58

syntex_syntax with-syntex?

Enables syntex_syntax ^0.58