nvim-lspconfig

nvim-lspconfig is a collection of LSP server configurations for the Nvim LSP client.

View all configs, or run :help lspconfig-all from Nvim.

Important ⚠️

• require('lspconfig') (the legacy "framework" of nvim-lspconfig) is deprecated in favor of vim.lsp.config (Nvim 0.11+).
  • The lspconfig.lua module will be dropped. Calls to require('lspconfig') will show a warning, which will later become an error.
• nvim-lspconfig itself is NOT deprecated. It provides server-specific configs.
  • The configs live in the lsp/ directory. vim.lsp.config automatically finds them and merges them with any local lsp/*.lua configs defined by you or a plugin.
  • The old configs in lua/lspconfig/ are deprecated and will be removed.

Migration instructions

1. Upgrade to Nvim 0.11+
2. (Optional) Use vim.lsp.config('…') (not require'lspconfig'.….setup{}) to customize or define a config.
3. Use vim.lsp.enable('…') (not require'lspconfig'.….setup{}) to enable a config, so that it activates for its filetypes.

Support

These configs are best-effort and supported by the community (you). See contributions.

• Ask questions on GitHub Discussions, not the issue tracker.
• If you found a bug in Nvim LSP (:help lsp), report it to Neovim core.
  • Do not report it here. Only configuration data lives here.

Install

• Requires Nvim 0.11.3+.
  • Support for Nvim 0.10 will be removed. Upgrade Nvim and nvim-lspconfig before reporting an issue.
• Install nvim-lspconfig using Vim's "packages" feature:

  git clone https://github.com/neovim/nvim-lspconfig ~/.config/nvim/pack/nvim/start/nvim-lspconfig
  

• Or with Nvim 0.12 (nightly), you can use the builtin vim.pack plugin manager:

  vim.pack.add{
    { src = 'https://github.com/neovim/nvim-lspconfig' },
  }

• Or use a 3rd-party plugin manager.

Quickstart

1. Install a language server, e.g. pyright

   npm i -g pyright

2. Enable its config in your init.lua (:help lsp-quickstart).

   vim.lsp.enable('pyright')

3. Ensure your project/workspace contains a root marker as specified in :help lspconfig-all.
4. Open a code file in Nvim. LSP will attach and provide diagnostics.

   nvim main.py
   

5. Run :checkhealth vim.lsp to see the status or to troubleshoot.

See :help lspconfig-all for the full list of server-specific details. For servers not on your $PATH (e.g., jdtls, elixirls), you must manually set the cmd parameter:

vim.lsp.config('jdtls', {
  cmd = { '/path/to/jdtls' },
})

Configuration

Nvim sets default options and mappings when LSP is active in a buffer:

• :help lsp-defaults
• :help diagnostic-defaults

To customize, see:

• :help lsp-attach
• :help lsp-buf

Extra settings can be specified for each LSP server. With Nvim 0.11+ you can extend a config by calling vim.lsp.config('…', {…}). (You can also copy any config directly from lsp/ and put it in a local lsp/ directory in your 'runtimepath').

vim.lsp.config('rust_analyzer', {
  -- Server-specific settings. See `:help lsp-quickstart`
  settings = {
    ['rust-analyzer'] = {},
  },
})

Create a new config

To create a new config you can either (1) use vim.lsp.config or (2) create a file lsp/<config-name>.lua somewhere on your 'runtimepath'.

Example: define a new config as code

1. Run :lua vim.lsp.config('foo', {cmd={'true'}})
2. Run :lua vim.lsp.enable('foo')
3. Run :checkhealth vim.lsp, the new config is listed under "Enabled Configurations". 😎

Example: define a new config as a file

1. Create a file lsp/foo.lua somewhere on your 'runtimepath'.

   :exe 'edit' stdpath('config') .. '/lsp/foo.lua'
   

2. Add this code to the file (or copy any of the examples from the lsp/ directory in this repo):

   return {
     cmd = { 'true' },
   }
   

3. Save the file (with ++p to ensure its parent directory is created).

   :write ++p
   

4. Enable the config.

   :lua vim.lsp.enable('foo')
   

5. Run :checkhealth vim.lsp, the new config is listed under "Enabled Configurations". 🌈

Troubleshooting

Start with :checkhealth vim.lsp to troubleshoot. The most common reasons a language server does not start or attach are:

1. Language server is not installed. nvim-lspconfig does not install language servers for you. You should be able to run the cmd defined in the config from the command line and see that the language server starts. If the cmd is a name instead of an absolute path, ensure it is on your $PATH.

2. Missing filetype plugins. Some languages are not detected by Nvim because they have not yet been added to the filetype detection system. Ensure :set filetype? shows the filetype and not an empty value.

3. Not triggering root detection. Some language servers require a "workspace", which is found by looking for an ancestor directory that contains a "root marker". The most common root marker is .git/, but each config defines other "root marker" names. Root markers/directories are listed in :help lspconfig-all.

   You can also explicitly set a root instead of relying on automatic detection by enabling 'exrc' and adding an .nvim.lua at the desired root dir with the following code:

   vim.lsp.config('<client name>', {
     root_dir = vim.fn.fnamemodify(debug.getinfo(1, 'S').source:sub(2), ':p:h'),
   })

   Note that prior to nvim 0.12 exrc file is executed only if it's inside of a cwd where you start nvim.

Bug reports

If you found a bug with LSP functionality, report it to Neovim core.

Before reporting a bug, check your logs and the output of :checkhealth vim.lsp. Add this to your init.lua to enable verbose logging:

vim.lsp.set_log_level("debug")

Attempt to run the language server, then run :LspLog to open the log. Most of the time, the reason for failure is present in the logs.

Commands

• :LspInfo (alias to :checkhealth vim.lsp) shows the status of active and configured language servers.
• :LspStart <config_name> Start the requested server name. Will only successfully start if the command detects a root directory matching the current config.
• :LspStop [<client_id_or_name>] Stops the given server. Defaults to stopping all servers active on the current buffer. To force stop use :LspStop!
• :LspRestart [<client_id_or_name>] Restarts the given client, and attempts to reattach to all previously attached buffers. Defaults to restarting all active servers.

Contributions

If a language server is missing from configs.md, contributing a new configuration for it helps others, especially if the server requires special setup. Follow these steps:

1. Read CONTRIBUTING.md.
2. Create a new file at lsp/<server_name>.lua.
   • Copy an existing config to get started. Most configs are simple. For an extensive example see texlab.lua.
3. Ask questions on GitHub Discussions or in the Neovim Matrix room.

Release process

To publish a release:

• Create and push a new tag.
• After pushing the tag, a GitHub action will automatically package the plugin and publish the release to LuaRocks.

License

Copyright Neovim contributors. All rights reserved.

nvim-lspconfig is licensed under the terms of the Apache 2.0 license.

See LICENSE.md