Language support

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.

Language	Syntax Highlighting	Treesitter Textobjects	Auto Indent	Default language servers
ada	✓	✓		`ada_language_server`
adl	✓	✓	✓
agda	✓
alloy	✓
amber	✓			`amber-lsp`
astro	✓			`astro-ls`
awk	✓	✓		`awk-language-server`
bash	✓	✓	✓	`bash-language-server`
bass	✓			`bass`
beancount	✓			`beancount-language-server`
bibtex	✓			`texlab`
bicep	✓			`bicep-langserver`
bitbake	✓			`bitbake-language-server`
blade	✓
blueprint	✓			`blueprint-compiler`
c	✓	✓	✓	`clangd`
c-sharp	✓	✓		`OmniSharp`
cabal				`haskell-language-server-wrapper`
caddyfile	✓	✓	✓
cairo	✓	✓	✓	`cairo-language-server`
capnp	✓		✓
cel	✓
circom	✓			`circom-lsp`
clarity	✓			`clarinet`
clojure	✓			`clojure-lsp`
cmake	✓	✓	✓	`neocmakelsp`, `cmake-language-server`
codeql	✓	✓		`codeql`
comment	✓
common-lisp	✓		✓	`cl-lsp`
cpon	✓		✓
cpp	✓	✓	✓	`clangd`
crystal	✓	✓	✓	`crystalline`, `ameba-ls`
css	✓		✓	`vscode-css-language-server`
csv	✓
cue	✓			`cuelsp`
cylc	✓	✓	✓
d	✓	✓	✓	`serve-d`
dart	✓	✓	✓	`dart`
dbml	✓
debian	✓
devicetree	✓
dhall	✓	✓		`dhall-lsp-server`
diff	✓
djot	✓
docker-compose	✓	✓	✓	`docker-compose-langserver`, `yaml-language-server`
dockerfile	✓	✓		`docker-langserver`
dot	✓			`dot-language-server`
dtd	✓
dune	✓
dunstrc	✓
earthfile	✓	✓	✓	`earthlyls`
edoc	✓
eex	✓
ejs	✓
elisp	✓
elixir	✓	✓	✓	`elixir-ls`
elm	✓	✓		`elm-language-server`
elvish	✓			`elvish`
env	✓	✓
erb	✓
erlang	✓	✓		`erlang_ls`, `elp`
esdl	✓
fennel	✓			`fennel-ls`
fga	✓	✓	✓
fidl	✓
fish	✓	✓	✓	`fish-lsp`
forth	✓			`forth-lsp`
fortran	✓		✓	`fortls`
fsharp	✓			`fsautocomplete`
gas	✓	✓		`asm-lsp`
gdscript	✓	✓	✓
gemini	✓
gherkin	✓
ghostty	✓
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`
gpr	✓			`ada_language_server`
graphql	✓	✓		`graphql-lsp`
gren	✓	✓
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	✓		✓	`hyprls`
idris				`idris2-lsp`
iex	✓
ini	✓
ink	✓
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	✓	✓	✓	`just-lsp`
kdl	✓	✓	✓
koka	✓		✓	`koka`
kotlin	✓	✓	✓	`kotlin-language-server`
koto	✓	✓	✓	`koto-ls`
latex	✓	✓		`texlab`
ld	✓		✓
ldif	✓
lean	✓			`lean`
ledger	✓
llvm	✓	✓	✓
llvm-mir	✓	✓	✓
llvm-mir-yaml	✓		✓
log	✓
lpf	✓
lua	✓	✓	✓	`lua-language-server`
luau	✓	✓	✓	`luau-lsp`
mail	✓	✓
make	✓		✓
markdoc	✓			`markdoc-ls`
markdown	✓			`marksman`, `markdown-oxide`
markdown-rustdoc	✓
markdown.inline	✓
matlab	✓	✓	✓
mermaid	✓
meson	✓		✓	`mesonlsp`
mint				`mint`
mojo	✓	✓	✓	`pixi`
move	✓
msbuild	✓		✓
nasm	✓	✓		`asm-lsp`
nestedtext	✓	✓	✓
nginx	✓
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	✓	✓	✓	`termux-language-server`, `bash-language-server`
pkl	✓		✓	`pkl-lsp`
po	✓	✓
pod	✓
ponylang	✓	✓	✓
powershell	✓
prisma	✓	✓		`prisma-language-server`
prolog	✓		✓	`swipl`
protobuf	✓	✓	✓	`buf`, `pb`, `protols`
prql	✓
pug	✓
purescript	✓	✓		`purescript-language-server`
python	✓	✓	✓	`ty`, `ruff`, `jedi-language-server`, `pylsp`
qml	✓		✓	`qmlls`
quarto	✓		✓
quint	✓			`quint-language-server`
r	✓			`R`
racket	✓		✓	`racket`
regex	✓
rego	✓			`regols`
rescript	✓	✓		`rescript-language-server`
rmarkdown	✓		✓	`R`
robot	✓			`robotframework_ls`
ron	✓		✓
rst	✓
ruby	✓	✓	✓	`ruby-lsp`, `solargraph`
rust	✓	✓	✓	`rust-analyzer`
rust-format-args	✓
sage	✓	✓
scala	✓	✓	✓	`metals`
scheme	✓		✓
scss	✓			`vscode-css-language-server`
slang	✓	✓	✓	`slangd`
slint	✓	✓	✓	`slint-lsp`
smali	✓		✓
smithy	✓			`cs`
sml	✓
snakemake	✓		✓	`pylsp`
solidity	✓	✓		`solc`
sourcepawn	✓	✓		`sourcepawn-studio`
spade	✓		✓	`spade-language-server`
spicedb	✓
sql	✓	✓
sshclientconfig	✓
starlark	✓	✓	✓	`starpls`
strace	✓
supercollider	✓
svelte	✓		✓	`svelteserver`
sway	✓	✓	✓	`forc`
swift	✓	✓		`sourcekit-lsp`
t32	✓
tablegen	✓	✓	✓
tact	✓	✓	✓
task	✓
tcl	✓		✓
teal	✓			`teal-language-server`
templ	✓			`templ`
tera	✓
textproto	✓	✓	✓
tfvars	✓		✓	`terraform-ls`
thrift	✓
tlaplus	✓
todotxt	✓
toml	✓	✓		`taplo`, `tombi`
tsq	✓			`ts_query_ls`
tsx	✓	✓	✓	`typescript-language-server`
twig	✓
typescript	✓	✓	✓	`typescript-language-server`
typespec	✓	✓	✓	`tsp-server`
typst	✓			`tinymist`
ungrammar	✓
unison	✓	✓	✓
uxntal	✓
v	✓	✓	✓	`v-analyzer`
vala	✓	✓		`vala-language-server`
vento	✓
verilog	✓	✓		`svlangserver`
vhdl	✓			`vhdl_ls`
vhs	✓
vue	✓			`vue-language-server`
wast	✓
wat	✓			`wat_server`
webc	✓
werk	✓
wesl	✓	✓
wgsl	✓			`wgsl-analyzer`
wit	✓		✓
wren	✓	✓	✓
xit	✓
xml	✓		✓
xtc	✓
yaml	✓	✓	✓	`yaml-language-server`, `ansible-language-server`
yara	✓			`yls`
yuck	✓
zig	✓	✓	✓	`zls`