Language Support

The following languages and Language Servers are supported. To use Language Server features, you must first configure the appropriate Language Server.

You can check the language support in your installed helix version with hx --health.

Also see the Language Configuration docs and the Adding Languages guide for more language configuration information.

LanguageSyntax HighlightingTreesitter TextobjectsAuto IndentDefault LSP
ada✓✓ada_language_server
adl✓✓✓
agda✓
astro✓
awk✓✓awk-language-server
bash✓✓✓bash-language-server
bass✓bass
beancount✓
bibtex✓texlab
bicep✓bicep-langserver
bitbake✓bitbake-language-server
blade✓
blueprint✓blueprint-compiler
c✓✓✓clangd
c-sharp✓✓OmniSharp
cabalhaskell-language-server-wrapper
cairo✓✓✓cairo-language-server
capnp✓✓
cel✓
circom✓circom-lsp
clojure✓clojure-lsp
cmake✓✓✓cmake-language-server
comment✓
common-lisp✓✓cl-lsp
cpon✓✓
cpp✓✓✓clangd
crystal✓✓crystalline
css✓✓vscode-css-language-server
cue✓cuelsp
cylc✓✓✓
d✓✓✓serve-d
dart✓✓✓dart
dbml✓
devicetree✓
dhall✓✓dhall-lsp-server
diff✓
docker-compose✓✓✓docker-compose-langserver, yaml-language-server
dockerfile✓✓docker-langserver
dot✓dot-language-server
dtd✓
dune✓
earthfile✓✓✓earthlyls
edoc✓
eex✓
ejs✓
elisp✓
elixir✓✓✓elixir-ls
elm✓✓elm-language-server
elvish✓elvish
env✓✓
erb✓
erlang✓✓erlang_ls, elp
esdl✓
fidl✓
fish✓✓✓
forth✓forth-lsp
fortran✓✓fortls
fsharp✓fsautocomplete
gas✓✓
gdscript✓✓✓
gemini✓
gherkin✓
git-attributes✓
git-commit✓✓
git-config✓✓
git-ignore✓
git-rebase✓
gjs✓✓✓typescript-language-server, vscode-eslint-language-server, ember-language-server
gleam✓✓gleam
glimmer✓ember-language-server
glsl✓✓✓glsl_analyzer
gn✓
go✓✓✓gopls, golangci-lint-langserver
godot-resource✓✓
gomod✓gopls
gotmpl✓gopls
gowork✓gopls
graphql✓✓graphql-lsp
groovy✓
gts✓✓✓typescript-language-server, vscode-eslint-language-server, ember-language-server
hare✓
haskell✓✓haskell-language-server-wrapper
haskell-persistent✓
hcl✓✓✓terraform-ls
heex✓✓elixir-ls
helm✓helm_ls
hocon✓✓✓
hoon✓
hosts✓
html✓vscode-html-language-server, superhtml
hurl✓✓✓
hyprlang✓✓
idrisidris2-lsp
iex✓
ini✓
inko✓✓✓
janet✓
java✓✓✓jdtls
javascript✓✓✓typescript-language-server
jinja✓
jjdescription✓
jq✓✓jq-lsp
jsdoc✓
json✓✓✓vscode-json-language-server
json5✓
jsonc✓✓vscode-json-language-server
jsonnet✓jsonnet-language-server
jsx✓✓✓typescript-language-server
julia✓✓✓julia
just✓✓✓
kdl✓✓✓
koka✓✓koka
kotlin✓kotlin-language-server
latex✓✓texlab
ld✓✓
ldif✓
lean✓lean
ledger✓
llvm✓✓✓
llvm-mir✓✓✓
llvm-mir-yaml✓✓
log✓
lpf✓
lua✓✓✓lua-language-server
make✓✓
markdoc✓markdoc-ls
markdown✓marksman, markdown-oxide
markdown.inline✓
matlab✓✓✓
mermaid✓
meson✓✓mesonlsp
mintmint
mojo✓✓✓mojo-lsp-server
move✓
msbuild✓✓
nasm✓✓
nickel✓✓nls
nim✓✓✓nimlangserver
nix✓✓nil, nixd
nu✓nu
nunjucks✓
ocaml✓✓ocamllsp
ocaml-interface✓ocamllsp
odin✓✓ols
ohm✓✓✓
opencl✓✓✓clangd
openscad✓openscad-lsp
org✓
pascal✓✓pasls
passwd✓
pem✓
perl✓✓✓perlnavigator
pest✓✓✓pest-language-server
php✓✓✓intelephense
php-only✓
pkgbuild✓✓✓pkgbuild-language-server, bash-language-server
pkl✓✓
po✓✓
pod✓
ponylang✓✓✓
powershell✓
prisma✓✓prisma-language-server
prologswipl
protobuf✓✓✓bufls, pb
prql✓
purescript✓✓purescript-language-server
python✓✓✓ruff, jedi-language-server, pylsp
qml✓✓qmlls
r✓R
racket✓✓racket
regex✓
rego✓regols
rescript✓✓rescript-language-server
rmarkdown✓✓R
robot✓robotframework_ls
ron✓✓
rst✓
ruby✓✓✓solargraph
rust✓✓✓rust-analyzer
sage✓✓
scala✓✓✓metals
scheme✓✓
scss✓vscode-css-language-server
slint✓✓✓slint-lsp
smali✓✓
smithy✓cs
sml✓
snakemake✓✓pylsp
solidity✓✓solc
spade✓✓spade-language-server
spicedb✓
sql✓✓
sshclientconfig✓
starlark✓✓
strace✓
supercollider✓
svelte✓✓svelteserver
sway✓✓✓forc
swift✓✓sourcekit-lsp
t32✓
tablegen✓✓✓
tact✓✓✓
task✓
tcl✓✓
templ✓templ
textproto✓✓✓
tfvars✓✓terraform-ls
thrift✓
todotxt✓
toml✓✓taplo
tsq✓
tsx✓✓✓typescript-language-server
twig✓
typescript✓✓✓typescript-language-server
typespec✓✓✓tsp-server
typst✓tinymist, typst-lsp
ungrammar✓
unison✓✓✓
uxntal✓
v✓✓✓v-analyzer
vala✓✓vala-language-server
verilog✓✓svlangserver
vhdl✓vhdl_ls
vhs✓
vue✓vue-language-server
wast✓
wat✓
webc✓
wgsl✓wgsl_analyzer
wit✓✓
wren✓✓✓
xit✓
xml✓✓
xtc✓
yaml✓✓✓yaml-language-server, ansible-language-server
yuck✓
zig✓✓✓zls