RustLsp Command not found

[niksingh710]

Have you read the docs and searched existing issues?

• I have read the README's troubleshooting guide.
• I have searched existing issues.
• I have searched existing discussions.
• I have searched the existing issues of other plugins related to this issue (if applicable).
• I have searched the existing rust-analyzer issues (if applicable).
• I can reproduce the issue with stable Neovim (not a distribution or nightly) and the minimal config.

Neovim version (nvim -v)

v0.9.5

Operating system/version

Arch Linux

Output of :checkhealth rustaceanvim

==============================================================================
rustaceanvim: require("rustaceanvim.health").check()

Checking for Lua dependencies ~
- WARNING dap not installed. Needed for debugging features [mfussenegger/nvim-dap](https://github.com/mfussenegger/nvim-dap)

Checking external dependencies ~
- OK rust-analyzer: found 
- OK Cargo: found cargo 1.77.2 (e52e36006 2024-03-26)
- OK rustc: found rustc 1.77.2 (25ef9e3d8 2024-04-09)

Checking config ~
- OK No errors found in config.

Checking for conflicting plugins ~
- OK No conflicting plugins detected.

Checking for tree-sitter parser ~
- OK tree-sitter parser for Rust detected.

How to reproduce the issue

used the minimal config also `RustLsp` command not available.

Expected behaviour

RustLsp Command should be available

Actual behaviour

The minimal config used to reproduce this issue.

-- Minimal nvim config with lazy
-- Assumes a directory in $NVIM_DATA_MINIMAL
-- Start with
--
-- export NVIM_DATA_MINIMAL=$(mktemp -d)
-- export NVIM_APP_NAME="nvim-ht-minimal"
-- nvim -u NORC -u minimal.lua
--
-- Then exit out of neovim and start again.

-- Ignore default config
local config_path = vim.fn.stdpath('config')
vim.opt.rtp:remove(config_path)

-- Ignore default plugins
local data_path = vim.fn.stdpath('data')
local pack_path = data_path .. '/site'
vim.opt.packpath:remove(pack_path)

-- bootstrap lazy.nvim
data_path = assert(os.getenv('NVIM_DATA_MINIMAL'), '$NVIM_DATA_MINIMAL environment variable not set!')
local lazypath = data_path .. '/lazy/lazy.nvim'
local uv = vim.uv
  ---@diagnostic disable-next-line: deprecated
  or vim.loop
if not uv.fs_stat(lazypath) then
  vim.fn.system {
    'git',
    'clone',
    '--filter=blob:none',
    'git@github.com:folke/lazy.nvim.git',
    '--branch=stable',
    lazypath,
  }
end
vim.opt.rtp:prepend(lazypath)

local lazy = require('lazy')

lazy.setup({
  {
    'mrcjkb/rustaceanvim',
    version = '^4',
    init = function()
      -- Configure rustaceanvim here
      vim.g.rustaceanvim = {}
    end,
    ft = { 'rust' },
  },
  -- Add any other plugins needed to reproduce the issue.
  -- see https://github.com/folke/lazy.nvim#-lazynvim for details.
}, { root = data_path, state = data_path .. '/lazy-state.json', lockfile = data_path .. '/lazy-lock.json' })

[niksingh710]

i get this error when doing Rust Analyzer start

[mrcjkb]

Hey 👋

The command becomes available when the LSP client attaches.
The health check doesn't print a version, which tells me you probably have the rustup wrapper for rust-analyzer installed, but not rust-analyzer (you can test this by trying to run rust-analyzer from the command line).

To install rust-analyzer, you need to install it with rustup: rustup add component rust-analyzer.

[niksingh710]

Hey 🍻
Thanks for the solution, buddy.
I am new to rust and didn't give a thought that I may need to add analyzer as component!

[Avi-D-coder]

I have a similar issue to this.
RA crashes on a particular file and I cannot see the log because RustLsp stops existing.

Client 1 quit with exit code 0 and signal 6                                                                       
E492: Not an editor command: RustLsp logFile 

[mrcjkb]

Hey 👋

I suggest you try

• the rustaceanvim troubleshooting guide
• the rust-analyzer troubleshooting guide

You can configure where to write the log file with vim.g.rustaceanvim.server.logfile

[Avi-D-coder]

Thanks, I did find that and get the log out with vim.g.rustaceanvim.server.logfile = /tmp/rustaceanvim.log.
It'd be nice if RustLsp logFile kept working after a client crash.

In my case the issue is a discrepancy between vscode rustaceanvim behavior with proc macros.
A bug report will follow eventually.

For now If anyone else reads this and is running into a crash that goes away when using procMacro.enabled = false, try ignoring macros until the client stays up. procMacro.ignored = {["rasn-derive"] = { "AsnType" }} did it for me.