[][src]Type Definition syntax::ast::CrateConfig

type CrateConfig = HashSet<(Symbol, Option<Symbol>), BuildHasherDefault<FxHasher>>;
⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

The set of keys (and, optionally, values) that define the compilation environment of the crate, used to drive conditional compilation.