Cargo Features
SPIR-V has no features set by default.
[dependencies]
spirv = { version = "0.3.0+sdk-1.3.268.0", features = ["serialize", "deserialize"] }
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.