Summary

I've defined a very simple extension following the instructions in https://zed.dev/docs/extensions/debugger-extensions.

# extensions.toml

id = "bazel"
name = "Bazel"
version = "0.1.0"
schema_version = 1
authors = ["Cameron Mulhern <[email protected]>"]
description = "Bazel support for Zed"

[debug-locators.bazel]

// src/lib.rs

struct Bazel {}

impl Extension for Bazel {
    fn new() -> Bazel {
        return Bazel {};
    }

    fn dap_locator_create_scenario(
        &mut self,
        locator_name: String,
        build_task: TaskTemplate,
        resolved_label: String,
        debug_adapter_name: String
    ) -> Option<DebugScenario> {
        // ...
    }

    fn run_dap_locator(&mut self, _locator_name: String, _build_task: TaskTemplate) -> Result<DebugRequest, String> {
        // ... 
    }
}

zed::register_extension!(Bazel);

As far as I can tell dap_locator_create_scenario is never called when e.g. opening the debug spawn panel from the debugger panel. I'm having a very hard time debugging extensions in general, as I can't seem to get any sort of logging to show up anywhere either.

If I'm doing something wrong, then some confirmation that these sorts of extensions are actually supported would be great. And some improvements to the documentation would be much appreciated.

Zed Version and System Specs

Zed: v0.191.5 (Zed)
OS: macOS 15.5.0
Memory: 32 GiB
Architecture: aarch64