return {
	"neovim/nvim-lspconfig",
	event = { "BufReadPre", "BufNewFile" },
	dependencies = {
		"nvim-lua/plenary.nvim",
		"hrsh7th/nvim-cmp",
		"hrsh7th/cmp-buffer",
		"hrsh7th/cmp-path",
		"hrsh7th/cmp-cmdline",
		"hrsh7th/cmp-nvim-lsp",
		{ "antosha417/nvim-lsp-file-operations", config = true },
	},
	config = function()
		-- https://github.com/folke/lazydev.nvim
		-- import lspconfig plugin
		local lspconfig = require("lspconfig")

		-- import cmp-nvim-lsp plugin
		local cmp_nvim_lsp = require("cmp_nvim_lsp")

		--local keymap = vim.keymap -- for conciseness

		local opts = { noremap = true, silent = true }

		-- configure dart server (with special settings)
		--[[
	    lspconfig["dartls"].setup({
			cmd = { "dart", "language-server", "--protocol=lsp" },
			filetypes = { "dart" },
			init_options = {
				closingLabels = true,
				flutterOutline = true,
				onlyAnalyzeProjectsWithOpenFiles = true,
				outline = true,
				suggestFromUnimportedLibraries = true,
			},
			settings = { -- custom settings for dartls
				dart = {
					completeFunctionCalls = true,
					showTodos = true,
				},
			},
		})
		--]]
		lspconfig.rust_analyzer.setup({
			settings = {
				["rust-analyzer"] = {
					diagnostics = {
						enable = false,
					},
				},
			},
		})
		lspconfig.gopls.setup({})
		lspconfig.lua_ls.setup({})

		local cmp = require("cmp")
		cmp.setup({
			mapping = cmp.mapping.preset.insert({
				["<C-a>"] = cmp.mapping.scroll_docs(-4),
				["<C-z>"] = cmp.mapping.scroll_docs(4),
				["<C-Space>"] = cmp.mapping.complete(),
				["<C-e>"] = cmp.mapping.abort(),
				["<CR>"] = cmp.mapping.confirm({ select = true }),
			}),
			sources = cmp.config.sources({
				{ name = "nvim_lsp" },
				{ name = "buffer" },
			}),
		})
	end,
}