Language servers

LunarVim uses filetype plugins to enable lazy-loading the setup of a language server. A template generator is used to create ftplugin files and populate them with the setup call.

lvim.lsp.automatic_configuration.skipped_servers contains a list of servers that will not be automatically configured by default, for example only tsserver is allowed for JS-family languages, and when a language has more than one server available, then the most popular one is usually chosen.

info

Any changes to lvim.lsp.automatic_configuration.skipped_servers must be followed by :LvimCacheReset to take effect.

Installing and updating a server

Automatic installation

By default, most supported language servers will get automatically installed once you open the supported file-type, e.g, opening a Python file for the first time will install pyright and configure it automatically for you.

Manual installation

lvim.lsp.automatic_servers_installation = false

Please refer to mason to see the updated full list of currently available servers.

To install a supported language server:

:LspInstall `<your_language_server>`

You can also open :Mason and interactively choose which servers to install (press g? for keybindings).

Updating a server

Open :Mason, select a server and update it with u. You can update all mason packages with <S-u>.

Changing the default server

To use a different server than the default one add the default server to the skipped_servers list and remove the one you want to use.

info

Any changes to lvim.lsp.automatic_configuration.skipped_servers must be followed by :LvimCacheReset to take effect.

Example:

• Use jedi_language_server instead of pyright

  -- add `pyright` to `skipped_servers` list
  vim.list_extend(lvim.lsp.automatic_configuration.skipped_servers, { "pyright" })
  -- remove `jedi_language_server` from `skipped_servers` list
  lvim.lsp.automatic_configuration.skipped_servers = vim.tbl_filter(function(server)
    return server ~= "jedi_language_server"
  end, lvim.lsp.automatic_configuration.skipped_servers)

Overriding settings

Using :LspSettings

To set settings for your language server:

:LspSettings <TAB>

Example:

1. :LspSettings sumneko_lua

2. {
     "Lua.hint.enable": false
   }

This will create a file in /lsp-settings to enable persistent changes. Refer to the documentation of nlsp-settings for a full updated list of supported language servers.

tip

Install jsonls LSP server for autocompletion.

By overriding the setup

Add the server you wish to configure manually to lvim.lsp.automatic_configuration.skipped_servers.

vim.list_extend(lvim.lsp.automatic_configuration.skipped_servers, { "sumneko_lua" })

info

Any changes to lvim.lsp.automatic_configuration.skipped_servers must be followed by :LvimCacheReset to take effect.

Now you can set it up manually using the builtin lsp manager in $LUNARVIM_CONFIG_DIR/ftplugin/<filetype>.lua

Example:

-- $LUNARVIM_CONFIG_DIR/ftplugin/lua.lua
local opts = {
  settings = {
    Lua = { hint = { enable = false } },
  },
}
require("lvim.lsp.manager").setup("sumneko_lua", opts)