Cargo Features

ebpf-user has no features set by default.

ebpf-user = { version = "0.2.0", features = ["macros"] }
macros = ebpf-user-macros

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.

ebpf-user-macros macros?