rust-analyzer doesn't work, fails to load workspace

[vvzen]

Summary

I am working a project that has got lots of different programming languages in it.

What's below is a simplification, but it's a basically a fully dockerized suite of services, so there's bash files, Dockerfiles, some python, etc..

.
├── ci-scripts
│   ├── before_script.sh
│   └── deploy_images.sh
├── docker-compose.yml
└── workers
    ├── python
    │   └── example_consumer.py
    └── rust
        └── rabbitmq-consumer
            ├── Cargo.lock
            ├── Cargo.toml
            └── src
                └── main.rs

I am running helix by cding all the way to rabbitmq-consumer, and then running hx src/main.rs.

Sadly, despite the health check passing fine for rust, I'm getting no help/errors/etc. when typing in a Rust source file.
I have installed rust-analyzer in a different place, since in working environment and I need this dev setup to work across multiple machines. /job/comms/pipeline/dev/myuser/opt/bin/ is in my PATH.

hx --health rust
Configured language server: rust-analyzer
Binary for language server: /job/comms/pipeline/dev/myuser/opt/bin/rust-analyzer
Configured debug adapter: lldb-vscode
Binary for debug adapter: Not found in $PATH
Highlight queries: ✔
Textobject queries: ✔
Indent queries: ✔

Reproduction Steps

I tried this:

1. hx src/main.rs

I expected this to happen: the rust-analyzer worked and helped me with error reporting while typing in helix.

Instead, this happened: nothing

Helix log

If I look at ~/.cache/helix/helix.log, I see:

~/.cache/helix/helix.log

2022-06-09T22:56:09.689 helix_lsp::transport [ERROR] err <- "[ERROR rust_analyzer::lsp_utils] rust-analyzer failed to load workspace: Failed to read json file /net/rust-project.json: No such file or directory (os error 2)\n"
2022-06-09T22:56:09.689 helix_lsp::transport [ERROR] err <- "\n"
2022-06-09T22:56:09.689 helix_term::application [WARN] unhandled window/showMessage: ShowMessageParams { typ: Error, message: "rust-analyzer failed to load workspace: Failed to read json file /net/rust-project.json: No such file or directory (os error 2)\n" }

I am not sure why it's looking for a rust-project.json file in /net/. In my case,/net/ is a storage mount (using autofs) where my home folder is mounted (/net/homes).

Platform

CentOS Linux release 7.9.2009 (Core)

Terminal Emulator

iterm2 - but I'm ssh-ing to another machine

Helix Version

helix 22.05

[sbromberger]

I've gone through the helix codebase and there's no string matching rust-project anywhere. Are you sure there's not something external (environment variable, config file, alias, ...) influencing your rust-analyzer?

That is - it appears that rust-analyzer itself is trying to load rust-project. This doesn't appear to have anything to do with helix.

[sbromberger]

Ah, looking here, it appears that this is a rust-analyzer config option. Perhaps this will help:

There are three ways to feed rust-project.json to rust-analyzer:

Place rust-project.json file at the root of the project, and rust-analyzer will discover it.

Specify "rust-analyzer.linkedProjects": [ "path/to/rust-project.json" ] in the settings (and make sure that your LSP client sends settings as a part of initialize request).

Specify "rust-analyzer.linkedProjects": [ { "roots": […​], "crates": […​] }] inline.

[vvzen]

Hi @sbromberger , thanks for having a look!
Does this file need to be filled in with specific data? or would a touch rust-project.json suffice ? I couldn't find much online.. (in the meantime, I will give it a try with just an empty file!)

[gabydd]

this issue is also fixed by #5748

you can make a .helix/config.toml in the repo and set editor.workspace-lsp-roots = ["workers/rust/rabbitmq-consumer"] for helix to give rust-analyzer the correct root