Cargo Features

aster has no features set by default.

[dependencies]
aster = { version = "0.41.0", features = ["with-syntex", "unstable-testing"] }
with-syntex = syntex_syntax
unstable-testing = clippy, compiletest_rs

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?
compiletest_rs unstable-testing?

Enables compiletest_rs ^0.2

syntex_syntax with-syntex?

Enables syntex_syntax ^0.58