LunarVim/ftplugin/lua.lua

-- https://github.com/sumneko/lua-language-server/wiki/Build-and-Run-(Standalone)
local sumneko_root_path = DATA_PATH .. "/lspinstall/lua"
local sumneko_binary = sumneko_root_path .. "/sumneko-lua-language-server"

require("lspconfig").sumneko_lua.setup {
  cmd = { sumneko_binary, "-E", sumneko_root_path .. "/main.lua" },
  on_attach = require("lsp").common_on_attach,
  settings = {
    Lua = {
      runtime = {
        -- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
        version = "LuaJIT",
        -- Setup your lua path
        path = vim.split(package.path, ";"),
      },
      diagnostics = {
        -- Get the language server to recognize the `vim` global
        globals = { "vim" },
      },
      workspace = {
        -- Make the server aware of Neovim runtime files
        library = {
          [vim.fn.expand "$VIMRUNTIME/lua"] = true,
          [vim.fn.expand "$VIMRUNTIME/lua/vim/lsp"] = true,
        },
        maxPreload = 100000,
        preloadFileSize = 1000,
      },
    },
  },
}
if O.lang.lua.autoformat then
  require("lv-utils").define_augroups {
    _lua_autoformat = {
      {
        "BufWritePre",
        "*.lua",
        "lua vim.lsp.buf.formatting_sync(nil, 1000)",
      },
    },
  }
end