9 releases

0.0.19 Feb 23, 2024
0.0.12 Aug 13, 2023
0.0.1 Jul 30, 2023

#41 in Text editors

Download history 119/week @ 2024-02-19 25/week @ 2024-02-26 1/week @ 2024-03-04 3/week @ 2024-03-11 46/week @ 2024-04-01

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erlls vscode version Actions Status License

Erlang language server.

Supported LSP features

Editor integrations

ErlLS can be used with any LSP clients. Here are a few examples.

Visual Studio Code / Visual Studio Code for the Web

Please install erlls extension.

There is no need to install the erlls binary using the $ cargo install command as the extension already includes the WebAssembly build.

Settings (settings.json)

To include the Erlang/OTP applications in the search target, please specify the directory as follows:

    "erlls.erlLibs": "/usr/local/lib/erlang/lib/:_checkouts:_build/default/lib"


  • The actual path may vary depending on the environment.
  • In VSCode Web, it's not possible to search applications located outside of the workspace.

Emacs (lsp-mode)

  1. Install erlls command.
$ cargo install erlls
  1. Add the following code to your .emacs file.
(with-eval-after-load 'lsp-mode
  (add-to-list 'lsp-language-id-configuration
               '(erlang-mode . "erlang")))

 (make-lsp-client :new-connection (lsp-stdio-connection "erlls")
                  :activation-fn (lsp-activate-on "erlang")
                  :priority -1
                  :server-id 'erlls))


~140K SLoC