luaprotocol-buffersneovimnvim-lspconfigbuf

Configuring Protobuf support for NeoVim

I am trying to configure Protobuf LSP support with nvim (I am using Lazyvim package manager). I've read here that bufls is deprecated and that we should be using buf_ls. Using this snippet, I've configured LSP like such:

-- in ./config/nvim/lua/plugins/lsp-config.lua
return {
  {
    "neovim/nvim-lspconfig",
    ...
        config = function()
      require("lspconfig").buf_ls.setup({
        cmd = { "buf", "beta", "lsp", "--timeout", "0", "--log-format=text" },
        filetypes = { "proto" },
        root_dir = require("lspconfig.util").root_pattern("buf.yaml", ".git"),
      })
    end,

As the result:

For context, similar configuration (just using JSON instead of Lua) yields all LSP features with Zed IDE.

Having run :lua vim.lsp.buf.document_symbol() on a .proto file I got:

Error  15:36:06 notify.error method textDocument/documentSymbol is not supported by any of the servers registered for the current buffer

I think what that means is that buf_ls doesn't have symbol support (yet?): https://github.com/bufbuild/buf#buf ...and that Zed achieves this via a combination of features. Is there a way to achieve the same with nvim? Any hint or help would be appreciated!

Solution

  • The solution for me was to switch to protols from buf_ls. It works for the symbols and go to definition functionality as expected!

    For LazyVim I enabled it like such:

      -- in plugins/lsp-config.lua
 require("lspconfig").protols.setup({})
 return {
  {
    "neovim/nvim-lspconfig",
      opts = {
        servers = {
           ...
           clangd = {
             filetypes = { "c", "cpp", "objc", "objcpp" }, -- explicitly omitting .proto
       },
       ...
  },{
    "williamboman/mason.nvim",
    opts = function(_, opts)
      opts.ensure_installed = opts.ensure_installed or {}
      vim.list_extend(opts.ensure_installed, {
        ...
        "protols", -- Protobuf support
      })
    end,
  },
}