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 },
		"hrsh7th/vim-vsnip",
		"hrsh7th/vim-vsnip-integ",
	},
	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({})

		-- Use system clipboard
		vim.opt.clipboard = "unnamedplus"

		-- Set up nvim-cmp.
		local cmp = require("cmp")

		cmp.setup({
			snippet = {
				-- REQUIRED - you must specify a snippet engine
				expand = function(args)
					vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
					-- require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
					-- require('snippy').expand_snippet(args.body) -- For `snippy` users.
					-- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
					-- vim.snippet.expand(args.body) -- For native neovim snippets (Neovim v0.10+)
				end,
			},
			window = {
				-- completion = cmp.config.window.bordered(),
				-- documentation = cmp.config.window.bordered(),
			},
			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 }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
			}),
			sources = cmp.config.sources({
				{ name = "nvim_lsp" },
				{ name = "vsnip" }, -- For vsnip users.
				-- { name = 'luasnip' }, -- For luasnip users.
				-- { name = 'ultisnips' }, -- For ultisnips users.
				-- { name = 'snippy' }, -- For snippy users.
			}, {
				{ name = "buffer" },
			}),
		})

		-- To use git you need to install the plugin petertriho/cmp-git and uncomment lines below
		-- Set configuration for specific filetype.
		--[[ cmp.setup.filetype('gitcommit', {
    sources = cmp.config.sources({
      { name = 'git' },
    }, {
      { name = 'buffer' },
    })
 })
 require("cmp_git").setup() ]]
		--

		-- Use buffer source for `/` and `?` (if you enabled `native_menu`, this won't work anymore).
		cmp.setup.cmdline({ "/", "?" }, {
			mapping = cmp.mapping.preset.cmdline(),
			sources = {
				{ name = "buffer" },
			},
		})

		-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
		cmp.setup.cmdline(":", {
			mapping = cmp.mapping.preset.cmdline(),
			sources = cmp.config.sources({
				{ name = "path" },
			}, {
				{ name = "cmdline" },
			}),
			matching = { disallow_symbol_nonprefix_matching = false },
		})

		-- Set up lspconfig.
		local capabilities = require("cmp_nvim_lsp").default_capabilities()
		-- Replace <YOUR_LSP_SERVER> with each lsp server you've enabled.
		require("lspconfig")["dartls"].setup({
			capabilities = capabilities,
		})
		require("lspconfig")["gopls"].setup({
			capabilities = capabilities,
		})
		require("lspconfig")["rust_analyzer"].setup({
			capabilities = capabilities,
		})
	end,
}
