mason-lspconfig.nvim

mason-lspconfig bridges mason.nvim with the lspconfig plugin - making it easier to use both plugins together.

:help mason-lspconfig.nvim

^{Latest version: v1.28.0}

Table of Contents

• Introduction
• Requirements
• Installation
• Setup
  • Automatic server setup (advanced feature)
• Commands
• Configuration
  • Default configuration
• Available LSP servers

Introduction

:h mason-lspconfig-introduction

mason-lspconfig.nvim closes some gaps that exist between mason.nvim and lspconfig. Its main responsibilities are to:

• register a setup hook with lspconfig that ensures servers installed with mason.nvim are set up with the necessary configuration
• provide extra convenience APIs such as the :LspInstall command
• allow you to (i) automatically install, and (ii) automatically set up a predefined list of servers
• translate between lspconfig server names and mason.nvim package names (e.g. lua_ls <-> lua-language-server)

It is recommended to use this extension if you use mason.nvim and lspconfig (it's strongly recommended for Windows users).

Note: this plugin uses the lspconfig server names in the APIs it exposes - not mason.nvim package names. See this table for a complete mapping.

Requirements

:h mason-lspconfig-requirements

• neovim >= 0.7.0
• mason.nvim
• lspconfig

Installation

Packer

use {
    "williamboman/mason.nvim",
    "williamboman/mason-lspconfig.nvim",
    "neovim/nvim-lspconfig",
}

lazy.nvim

{
    "williamboman/mason.nvim",
    "williamboman/mason-lspconfig.nvim",
    "neovim/nvim-lspconfig",
}

vim-plug

Plug 'williamboman/mason.nvim'
Plug 'williamboman/mason-lspconfig.nvim'
Plug 'neovim/nvim-lspconfig'

Setup

:h mason-lspconfig-quickstart

It's important that you set up the plugins in the following order:

1. mason.nvim
2. mason-lspconfig.nvim
3. Setup servers via lspconfig

Pay extra attention to this if you lazy-load plugins, or somehow "chain" the loading of plugins via your plugin manager.

require("mason").setup()
require("mason-lspconfig").setup()

-- After setting up mason-lspconfig you may set up servers via lspconfig
-- require("lspconfig").lua_ls.setup {}
-- require("lspconfig").rust_analyzer.setup {}
-- ...

Refer to the Configuration section for information about which settings are available.

Automatic server setup (advanced feature)

:h mason-lspconfig-automatic-server-setup

mason-lspconfig provides extra, opt-in, functionality that allows you to automatically set up LSP servers installed via mason.nvim without having to manually add each server setup to your Neovim configuration. Refer to :h mason-lspconfig-automatic-server-setup for more details.

Commands

:h mason-lspconfig-commands

• :LspInstall [<server>...] - installs the provided servers
• :LspUninstall <server> ... - uninstalls the provided servers

Configuration

:h mason-lspconfig-settings

You may optionally configure certain behavior of mason-lspconfig.nvim when calling the .setup() function. Refer to the default configuration for a list of all available settings.

Example:

require("mason-lspconfig").setup {
    ensure_installed = { "lua_ls", "rust_analyzer" },
}

Default configuration

local DEFAULT_SETTINGS = {
    -- A list of servers to automatically install if they're not already installed. Example: { "rust_analyzer@nightly", "lua_ls" }
    -- This setting has no relation with the `automatic_installation` setting.
    ---@type string[]
    ensure_installed = {},

    -- Whether servers that are set up (via lspconfig) should be automatically installed if they're not already installed.
    -- This setting has no relation with the `ensure_installed` setting.
    -- Can either be:
    --   - false: Servers are not automatically installed.
    --   - true: All servers set up via lspconfig are automatically installed.
    --   - { exclude: string[] }: All servers set up via lspconfig, except the ones provided in the list, are automatically installed.
    --       Example: automatic_installation = { exclude = { "rust_analyzer", "solargraph" } }
    ---@type boolean
    automatic_installation = false,

    -- See `:h mason-lspconfig.setup_handlers()`
    ---@type table<string, fun(server_name: string)>?
    handlers = nil,
}

Available LSP servers

Language	Server name
All	snyk_ls
All	typos_lsp
ast-grep	ast_grep
Autoconf	autotools_ls
AWK	awk_ls
Ada	als
Angular	angularls
Ansible	ansiblels
Antlers	antlersls
Apex	apex_ls
Arduino	arduino_language_server
Assembly (GAS/NASM, GO)	asm_lsp
Astro	astro
Automake	autotools_ls
Azure Pipelines	azure_pipelines_ls
Bash	bashls
Bash	pkgbuild_language_server
Beancount	beancount
Bicep	bicep
BrighterScript	bright_script
Buf	bufls
C	clangd
C#	csharp_ls
C# (docs)	omnisharp_mono
C# (docs)	omnisharp
C++	clangd
Cairo	cairo_ls
CMake	cmake
CMake	neocmake
CSS	cssls
CSS	cssmodules_ls
CSS	unocss
Clarity	clarity_lsp
Clojure	clojure_lsp
CodeQL	codeqlls
Coq	coq_lsp
Crystal	crystalline
Cucumber	cucumber_language_server
Custom Elements Language Server	custom_elements_ls
Cue	dagger
Cypher	cypher_ls
Deno	denols
Dhall	dhall_lsp_server
Diagnostic (general purpose server)	diagnosticls
Dlang	serve_d
Docker	dockerls
Docker Compose	docker_compose_language_service
Dot	dotls
Drools	drools_lsp
Earthly	earthlyls
EFM (general purpose server)	efm
ESLint	eslint
Elixir	elixirls
Elixir	lexical
dprint	dprint
Elm	elmls
Ember	ember
Emmet	emmet_language_server
Emmet	emmet_ls
Erg	erg_language_server
Erlang	elp
Erlang	erlangls
F#	fsautocomplete
Facility Service Definition	facility_language_server
Fennel	fennel_language_server
Fennel	fennel_ls
Flux	flux_lsp
Foam (OpenFOAM)	foam_ls
Fortran	fortls
Glint	glint
GLSL	glsl_analyzer
GLSL	glslls
Go	golangci_lint_ls
Go	gopls
Gradle	gradle_ls
Grammarly	grammarly
GraphQL	graphql
Groovy	groovyls
HDL	hdl_checker
HTML	html
HTMX	htmx
Haskell	hls
Haxe	haxe_language_server
Helm	helm_ls
Hoon	hoon_ls
JSON	jsonls
JSON	biome
Java	jdtls
Java	java_language_server
JavaScript	quick_lint_js
JavaScript	tsserver
JavaScript	vtsls
JavaScript	biome
Jinja	jinja_lsp
Jsonnet	jsonnet_ls
Julia (docs)	julials
jq	jqls
Kotlin	kotlin_language_server
LaTeX	ltex
LaTeX	texlab
Lelwel	lelwel_ls
Lua	lua_ls
Luau	luau_lsp
LWC	lwc_ls
Make	autotools_ls
Markdown	markdown_oxide
Markdown	marksman
Markdown	prosemd_lsp
Markdown	remark_ls
Markdown	vale_ls
Markdown	zk
Matlab	matlab_ls
MDX	mdx_analyzer
Meson	mesonlsp
Meson (deprecated)	swift_mesonls
Metamath Zero	mm0_ls
Move	move_analyzer
Mutt	mutt_ls
Nickel	nickel_ls
Nim	nim_langserver
Nim	nimls
Nix	nil_ls
Nix	rnix
OCaml	ocamllsp
Odin	ols
OneScript, 1C:Enterprise	bsl_ls
OpenAPI	spectral
OpenAPI	vacuum
OpenCL	opencl_ls
OpenSCAD	openscad_lsp
PHP	intelephense
PHP	phpactor
PHP	psalm
Perl	perlnavigator
Pest	pest_ls
Pico8	pico8_ls
Powershell	powershell_es
Prisma	prismals
Puppet	puppet
PureScript	purescriptls
Python	basedpyright
Python	jedi_language_server
Python	pyre
Python	pyright
Python	pylyzer
Python	sourcery
Python (docs)	pylsp
Python	ruff
Python	ruff_lsp
R	r_language_server
Raku	raku_navigator
ReScript	rescriptls
Reason	reason_ls
Robot Framework	robotframework_ls
Rome	rome
Ruby	ruby_lsp
Ruby	solargraph
Ruby	sorbet
Ruby	standardrb
Ruby	rubocop
Rust	rust_analyzer
SQL	sqlls
SQL	sqls
Salt	salt_ls
Sass	somesass_ls
Shopify Theme Check	theme_check
Slint	slint_lsp
Smithy	smithy_ls
Solidity	solang
Solidity	solc
Solidity	solidity
Solidity	solidity_ls
Solidity	solidity_ls_nomicfoundation
Sphinx	esbonio
Standard ML	millet
Starlark	bzl
Stylelint	stylelint_lsp
Svelte	svelte
Stimulus	stimulus_ls
SystemVerilog	svlangserver
SystemVerilog	svls
SystemVerilog	verible
TOML	taplo
Tailwind CSS	tailwindcss
Teal	teal_ls
Templ	templ
Terraform	terraformls
Terraform	tflint
Thrift	thriftls
Twiggy	twiggy_language_server
TypeScript	biome
TypeScript	tsserver
TypeScript	vtsls
Typst	typst_lsp
V	v_analyzer
V	vls
Vala	vala_ls
Veryl	veryl_ls
VimL	vimls
Visualforce	visualforce_ls
Vue	volar
Vue	vuels
WGSL	wgsl_analyzer
XML	lemminx
YAML	gitlab_ci_ls
YAML	hydra_lsp
YAML	yamlls
Zig	zls