return {
  "neovim/nvim-lspconfig",
  dependencies = {
    "mason-org/mason.nvim",
    "mason-org/mason-lspconfig.nvim",
    {
      "folke/lazydev.nvim",
      ft = "lua", -- only load on lua files
      opts = {
        library = {
          -- See the configuration section for more details
          -- Load luvit types when the `vim.uv` word is found
          { path = "${3rd}/luv/library", words = { "vim%.uv" } },
        },
      },
    },
  },
  config = function()
    local capabilities = require("cmp_nvim_lsp").default_capabilities()
    local handlers = {
      -- ["textDocument/hover"] = vim.lsp.with(vim.lsp.handlers.hover, { border = "rounded" }),
      -- ["textDocument/signatureHelp"] = vim.lsp.with(vim.lsp.handlers.signature_help, { border = "rounded" }),
    }

    require("mason").setup()
    require("mason-lspconfig").setup({
      ensure_installed = {
        "lua_ls",
        "gopls",
        "html",
        "basedpyright",
        "clangd",
        "yamlls",
        "ansiblels",
      },
      handlers = {
        function(server_name)
          require("lspconfig")[server_name].setup {
            capabilities = capabilities,
            handlers = handlers
          }
        end,
        clangd = function()
          local lspconfig = require("lspconfig")
          lspconfig.clangd.setup({
            capabilities = capabilities,
            handlers = handlers,
            init_options = {
              fallbackFlags = { '--std=c++20' }
            },
          })
        end,
      }
    })

    vim.api.nvim_create_autocmd("LspAttach", {
      group = vim.api.nvim_create_augroup("lsp", { clear = true }),
      callback = function(args)
        -- 2
        vim.api.nvim_create_autocmd("BufWritePre", {
          -- 3
          buffer = args.buf,
          callback = function()
            -- 4 + 5
            vim.lsp.buf.format { async = false, id = args.data.client_id }
          end,
        })
      end
    })
  end,
}