local USE flag

rust

Build support for the Rust language, installs gccrs.

Package	“rust” Flag Description
dev-lang/gnat-gpl	Build support for the Rust language, installs gccrs.
sys-devel/gcc	Build support for the Rust language, installs gccrs.
media-libs/cubeb	Use the newer rust-based audio backends if available
dev-vcs/mercurial	Use Rust extensions.