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Editors

This file contains community driven instructions on how to set up the Ruby LSP in editors other than VS Code. For VS Code, use the official Ruby LSP extension.

Note

Some Ruby LSP features may be unavailable or limited due to incomplete implementations of the Language Server Protocol, such as dynamic feature registration, or file watching.

If you need to select particular features to enable or disable, see vscode/package.json for the full list.

IMPORTANT NOTE FOR ALL EDITORS

The command to launch the language server might depend on which editor and version manager combination you are using. In order to work properly, the Ruby LSP must be launched with the Ruby version being used by the project you are working on and with the correct Bundler environment set.

If you normally launch your editor from the terminal in a shell session where the Ruby environment is already activated, then you can probably just use ruby-lsp as the command.

If you're seeing issues related to not finding the right gems or not being able to locate the ruby-lsp executable, then you may need to ensure that the environment is properly configured by the version manager before you try to run the ruby-lsp executable. How to do this will depend on which version manager you use. Here are some examples:

If your version manager exposes a command to run an executable within the context of the current Ruby, use that:

  • mise x -- ruby-lsp
  • shadowenv exec -- ruby-lsp

If your version manager creates gem executable shims that perform the automatic version switching, then use those:

  • ~/.rbenv/shims/ruby-lsp
  • ~/.asdf/shims/ruby-lsp

If your version manager doesn't provide either of those, then activate the environment and run the executable:

  • chruby $(cat .ruby-version) && ruby-lsp

These strategies will ensure that the ruby-lsp executable is invoked with the correct Ruby version, GEM_HOME and GEM_PATH, which are necessary for proper integration with your project.

Emacs Eglot

Eglot runs solargraph server by default. To set it up with ruby-lsp you need to put that in your init file:

(with-eval-after-load 'eglot
 (add-to-list 'eglot-server-programs '((ruby-mode ruby-ts-mode) "ruby-lsp")))

When you run eglot command it will run ruby-lsp process for you.

Neovim

Note: Ensure that you are using Neovim 0.10 or newer.

nvim-lspconfig

The nvim-lspconfig plugin has support for Ruby LSP.

Mason

You can use mason.nvim, along with mason-lspconfig.nvim:

local capabilities = vim.lsp.protocol.make_client_capabilities()
local mason_lspconfig = require("mason-lspconfig")
local servers = {
  ruby_lsp = {},
}

mason_lspconfig.setup {
  ensure_installed = vim.tbl_keys(servers),
}

mason_lspconfig.setup_handlers {
  function(server_name)
    require("lspconfig")[server_name].setup {
      capabilities = capabilities,
      on_attach = on_attach,
      settings = servers[server_name],
      filetypes = (servers[server_name] or {}).filetypes,
    }
  end
}

Additional setup (optional)

rubyLsp/workspace/dependencies is a custom method currently supported only in the VS Code plugin. The following snippet adds ShowRubyDeps command to show dependencies in the quickfix list.

local function add_ruby_deps_command(client, bufnr)
  vim.api.nvim_buf_create_user_command(bufnr, "ShowRubyDeps", function(opts)
    local params = vim.lsp.util.make_text_document_params()
    local showAll = opts.args == "all"

    client.request("rubyLsp/workspace/dependencies", params, function(error, result)
      if error then
        print("Error showing deps: " .. error)
        return
      end

      local qf_list = {}
      for _, item in ipairs(result) do
        if showAll or item.dependency then
          table.insert(qf_list, {
            text = string.format("%s (%s) - %s", item.name, item.version, item.dependency),
            filename = item.path
          })
        end
      end

      vim.fn.setqflist(qf_list)
      vim.cmd('copen')
    end, bufnr)
  end,
  {nargs = "?", complete = function() return {"all"} end})
end

require("lspconfig").ruby_lsp.setup({
  on_attach = function(client, buffer)
    add_ruby_deps_command(client, buffer)
  end,
})

LazyVim LSP

For LazyVim, you can add the ruby-lsp by creating a file in your plugins folder (~/.config/nvim/lua/plugins/ruby_lsp.lua) and adding the following:

-- ~/.config/nvim/lua/plugins/ruby_lsp.lua

return {
  {
    "neovim/nvim-lspconfig",
    ---@class PluginLspOpts
    opts = {
      ---@type lspconfig.options
      servers = {
        -- disable solargraph from auto running when you open ruby files
        solargraph = {
          autostart = false
        },
        -- ruby_lsp will be automatically installed with mason and loaded with lspconfig
        ruby_lsp = {},
      },
    },
  },
}

Sublime Text LSP

To configure the Ruby LSP using LSP for Sublime Text, add the following configuration to your LSP client configuration:

"clients": {
  "ruby-lsp": {
    "enabled": true,
    "command": [
      "ruby-lsp"
    ],
    "selector": "source.ruby",
    "initializationOptions": {
      "enabledFeatures": {
        "diagnostics": false
      },
      "experimentalFeaturesEnabled": true
    }
  }
}

Restart LSP or Sublime Text and ruby-lsp will automatically activate when opening ruby files.

Zed

Setting up Ruby LSP

Zed has added support for Ruby LSP as a alternative language server in version v0.0.2 of the Ruby extension.

See zed-industries/zed#4834 for discussion of the limitations.

RubyMine

You can use the Ruby LSP with RubyMine (or IntelliJ IDEA Ultimate) through the following plugin.

Note that there might be overlapping functionality when using it with RubyMine, given that the IDE provides similar features as the ones coming from the Ruby LSP.

Ruby LSP plugin