Attribute Macro dependencies 

#[dependencies]

Embed and bind the build-time fingerprint.json in one expression.

Apply to an empty fn inside a function body; the function name becomes the let binding in the expansion.

#[dependencies]          // parse mode  → BuildTimeFingerprintData (propagates ?)
#[dependencies(bytes)]   // bytes mode  → &'static [u8]

Requires the dependency-graph-capture feature. Embed and parse (or read the raw bytes of) the build-time fingerprint.json fingerprint in one expression.

Apply to an empty fn; the function name becomes the let binding in the expansion. Requires the dependency-graph-capture feature.

Parse mode (default)

use toolkit_zero::dependency_graph::capture::{dependencies, BuildTimeFingerprintData};

fn show() -> Result<(), Box<dyn std::error::Error>> {
    #[dependencies]
    fn data() {}
    // expands to:
    // const __TOOLKIT_ZERO_BUILD_TIME_FINGERPRINT__: &str =
    //     include_str!(concat!(env!("OUT_DIR"), "/fingerprint.json"));
    // let data = capture::parse(__TOOLKIT_ZERO_BUILD_TIME_FINGERPRINT__)?;

    println!("{} v{}", data.package.name, data.package.version);
    Ok(())
}

Bytes mode

fn raw_bytes() -> &'static [u8] {
    #[dependencies(bytes)]
    fn raw() {}
    // expands to:
    // const __TOOLKIT_ZERO_BUILD_TIME_FINGERPRINT__: &str =
    //     include_str!(concat!(env!("OUT_DIR"), "/fingerprint.json"));
    // let raw: &'static [u8] = __TOOLKIT_ZERO_BUILD_TIME_FINGERPRINT__.as_bytes();
    raw
}

Full documentation is in the crate-level #[dependencies] section.