Since Rust proc macro code runs at compile time, I'm assuming what is normally conditional compilation, is accessible at the macro's runtime.
How do I access it? (for example, maybe I only want to parse certain syntax if a given feature is enabled)
For context - what I'm trying to do is parse an identifier - but a conditionally compiled one. My LSP errors out, though actually compiling library consumers works fine. Closest thing I could find was "CARGO_FEATURE_" in the rust docs, but that's only for build scripts.