I support 1 though I wonder if there's a Rust binding to D2 we could benefit from.

If we head in this direction, would we be open to adding other renderers to the family or prefer to keep it small? I'm thinking of things like d3.

There's definitely maintenance burden associated with all three approaches but I think crates are a great isolation unit for encouraging seperation of concerns. Happy to be a part of it :)

Oh, looked at the rust to go build setting. Not nearly as complex as I was reading from the initial description, seems perfectly acceptable.

Better bindings would be great but I didn't find any (I didn't search that hard), right now I've just been serializing to json to simplify it / only implementing exactly what I need. Another option would be something like https://github.com/mozilla/uniffi-rs but that might be more annoying than json.

Right now my build.rs looks like:

const BUILD_DIR: &str = "build";
const LIB_NAME: &str = "d2-sys";

fn main() {
    let manifest_dir = env!("CARGO_MANIFEST_DIR");
    let build_path = format!("{}/{}", manifest_dir, BUILD_DIR);

    let status = Command::new("go")
        .args(["build", "-buildmode=c-archive"])
        .args(["-o", &format!("{build_path}/lib{LIB_NAME}.a")])
        .arg("lib.go")
        .status()
        .expect("Failed to build Go library");

    if !status.success() {
        panic!("Go library build failed");
    }

    println!("cargo:rustc-link-search=native={build_path}");
    println!("cargo:rustc-link-lib=static={LIB_NAME}");
}

This will definitely cause issues for consumers without golang installed. https://github.com/ryanfowler/cgo-rs/blob/main/src/lib.rs#L184 seems like it would do more but also still have issues for people without golang.

I'd be open to adding more renderers but as showcased by my slow upkeep of the graphviz renderer I can't promise any support for them. But that's part of the beauty of open source right? 😄

I'll work on combining what I have in my local repo to the latest master and get a PR up for some review