jaq 1.6 to jaq 2.1 breaking changes

[thibaultcha]

Hello,

We've inherited from code that uses jaq 1.5 and did something like this:

use jaq_core;
use jaq_interpret::{Ctx, Filter, FilterT, ParseCtx, RcIter, Val};
use jaq_std;

fn new(jq: &str, inputs: Vec<String>) -> Result<Self, String> {
    let mut defs = ParseCtx::new(inputs.clone());

    defs.insert_natives(jaq_core::core());
    defs.insert_defs(jaq_std::std());

    let (parsed, errs) = jaq_parse::parse(jq, jaq_parse::main());
    // ...

    let Some(parsed) = parsed else {
        return Err("parsed filter contains no main handler".to_string());
    };

    // ...

    Ok(Jq { inputs, filter })
}

Now with jaq 2.1 this does not compile anymore as the API changed, we get errors such as:

error[E0425]: cannot find function `core` in crate `jaq_core`
  --> src/nodes/jq.rs:72:39
   |
72 |         defs.insert_natives(jaq_core::core());
   |                                       ^^^^ not found in `jaq_core`

For the life of me I cannot figure out how this translates into jaq 2.1. Is there a migration guide or a clear changelog somewhere (that isn't just a link to the commits)? I am not even able to understand where the above 1.5 example was sourced from as it doesn't seem to be a part of 1.5 documentation or examples.

Thank you.

[thibaultcha]

Oh, I see, it seems I misinterpreted the purpose of the project! I seem to understand it does not provide a stable Rust API, but really a pure Rust jq clone, my bad. Ok, I see now the above snippet was taken from the crate itself, and based on what I see in the 2.1 crate I should be able to work with that!