Can not rename a enum which has a certain derive macro `thiserror::Error` via LSP Server in Rust.

[BoolPurist]

Summary

I can not rename a enum which has a certain derive macro, here thiserror::Error, via LSP Server in Rust.
I do not get even to the renaming prompt. Instead I get an error message protocol error: InvalidParams: No references found at position.

This problems seems to be helix and not rust analyzer because vscodium does not have the problem on my system.

This problems disappears when I remove the derive macro called thiserror::Error in the derive derective of the enum.

Reproduction Steps

Content of rust file producing this error

use std::io;
use std::path::PathBuf;

#[derive(Debug, thiserror::Error)]
pub enum NonExistinDirectory {
    #[error(
        "Could not determine meta data at {path:?} to determine if this is a directory. Error: {error}"
    )]
    Io { path: PathBuf, error: io::Error },
    #[error("There is no directory at {0:?}")]
    NotThere(PathBuf),
}

fn main() {
    println!("Hello, world!");
}

I tried this:

1. Create a project via cargo new hello.
2. Go into cd hello.
3. Add thiserror crate to the project cargo add thiserror.
4. Paste the above mentioned content to src/main.rs.
5. hx src/main.rs within the diretory of the rust project.
6. Move cursor to name of enum Name NonExistinDirectory .
7. Press Space + r to rename the name of this enum.

I expected this to happen:

Prompt in the bottom to change the name of the enum.

Instead, this happened:

Got the following error where the prompt for renaming should be.

protocol error: InvalidParams: No references found at position

Helix log

~/.cache/helix/helix.log

please provide a copy of `~/.cache/helix/helix.log` here if possible, you may need to redact some of the lines

helix.log

Platform

Linux Fedora 43

Terminal Emulator

alacritty

Installation Method

DNF: Native Package Manager

Helix Version

helix 25.07.1 (a05c151)

[RoloEdits]

I wasn't able to replicate this, it worked as expected for me:

thiserror_rename.mp4

I am using a build based off of master, minus a couple commits. Also Fedora 43, Wezterm.

I built rust-analyzer from source based on last weeks release commit.

[BoolPurist]

Hmm dam I hate this kind of problems.
Maybe this helps.

My Helix setup uses this rust analyzer version

rust-analyzer 1.91.1 (ed61e7d 2025-11-07)

Mine is coming from rustup. I installed rustup via the rustup-init from the dnf package rustup.

Here is my language.toml config

[[language]]
name = "rust"
auto-format = false

[[language]]
name = "bash"
auto-format = false
formatter = { command = "shfmt", args = [
  "--language-dialect",
  "bash",
  "-i",
  "4",
  "-"
] }

[language-server.rust-analyzer]
config = { cargo = { features = "all" } }

Removing [language-server.rust-analyzer] config = { cargo = { features = "all" } } did not fix the problem :(

[BoolPurist]

I have tried a different Terminal Emulator. Problem still there.
I tested it in VM with Fedora 42. There it works.
Hard to tell what is wrong with my Setup.

Interesting If I however declare a impl Block for this enum with thiserror::Error still in the derive directive and change the name under the impl Bock then it works.

See this short clip what I mean

screencast_impl_block_rename.mp4