Language servers

The language servers Pomelo can start, the languages each one serves and the folder it runs in. Under each are the programs that can be it, in the order they are tried; the first one found runs. The language_servers setting names them to reorder them, turn one off with !name, or turn on an opt-in one, which runs only when named there (see Language servers).

Pomelo looks for each program on your login shell's PATH first. Servers published to npm are downloaded when missing (with your node and npm) into ~/Library/Application Support/Pomelo/languages.

rust-analyzer

For Rust. Runs in the folder of the outermost Cargo.toml, else the workspace folder.

Name	Program	Opt-in	When missing
rust-analyzer	rust-analyzer	-	Install it: rustup component add rust-analyzer

typescript

For TypeScript, TSX, JavaScript. Runs in the folder of the outermost package.json, tsconfig.json or jsconfig.json, else the workspace folder.

Name	Program	Opt-in	When missing
vtsls	vtsls --stdio	-	Downloaded from npm (@vtsls/language-server)
typescript-language-server	typescript-language-server --stdio	-	Install it yourself

tailwindcss

For TypeScript, TSX, JavaScript, CSS, HTML, PHP, Svelte. Runs in the folder of the outermost package.json, tsconfig.json or jsconfig.json, else the workspace folder.

Name	Program	Opt-in	When missing
tailwindcss-language-server	tailwindcss-language-server --stdio	-	Downloaded from npm (@tailwindcss/language-server)

eslint

For TypeScript, TSX, JavaScript, Svelte. Runs in the folder of the outermost package.json, tsconfig.json or jsconfig.json, else the workspace folder.

Name	Program	Opt-in	When missing
eslint	node vscode-eslint/server/out/eslintServer.js --stdio	-	Built once from its source release

gopls

For Go. Runs in the folder of the outermost go.work or go.mod, else the workspace folder.

Name	Program	Opt-in	When missing
gopls	gopls	-	Install it: go install golang.org/x/tools/gopls@latest

python

For Python. Runs in the folder of the nearest pyproject.toml, setup.py, setup.cfg, requirements.txt or pyrightconfig.json, else the workspace folder.

Name	Program	Opt-in	When missing
basedpyright	basedpyright-langserver --stdio	-	Downloaded from npm (basedpyright)
pyright	pyright-langserver --stdio	-	Downloaded from npm (pyright)
ty	ty server	-	Install it: uv tool install ty

clangd

For C, C++. Runs in the folder of the nearest compile_commands.json, CMakeLists.txt or .clangd, else the workspace folder.

Name	Program	Opt-in	When missing
clangd	clangd	-	Install it yourself

ruby

For Ruby. Runs in the folder of the nearest Gemfile, else the workspace folder.

Name	Program	Opt-in	When missing
solargraph	solargraph stdio	-	Install it: gem install solargraph
ruby-lsp	ruby-lsp	yes	Install it: gem install ruby-lsp