move to nvim lua and lsp

.config/nvim/lua/rahcodes/packer.lua

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+-- This file can be loaded by calling `lua require('plugins')` from your init.vim
+local ensure_packer = function()
+	local fn = vim.fn
+	local install_path = fn.stdpath("data") .. "/site/pack/packer/start/packer.nvim"
+	if fn.empty(fn.glob(install_path)) > 0 then
+		fn.system({ "git", "clone", "--depth", "1", "https://github.com/wbthomason/packer.nvim", install_path })
+		vim.cmd([[packadd packer.nvim]])
+		return true
+	end
+	return false
+end
+
+local packer_bootstrap = ensure_packer()
+
+return require("packer").startup(function(use)
+	-- Packer can manage itself
+	use("wbthomason/packer.nvim")
+	use("folke/tokyonight.nvim")
+	use({
+		"nvim-telescope/telescope.nvim",
+		tag = "0.1.0",
+		requires = { { "nvim-lua/plenary.nvim" } },
+	})
+	use({
+		"nvim-treesitter/nvim-treesitter",
+		run = function()
+			local ts_update = require("nvim-treesitter.install").update({ with_sync = true })
+			ts_update()
+		end,
+	})
+	use({ "williamboman/mason.nvim" })
+	use({ "williamboman/mason-lspconfig.nvim" })
+
+	-- configure lsp servers
+	use("neovim/nvim-lspconfig")
+	use("hrsh7th/cmp-nvim-lsp")
+	use("hrsh7th/cmp-buffer")
+	use("hrsh7th/nvim-cmp")
+	-- use("tzachar/cmp-tabnine", { run = "./install.sh" })
+	use("onsails/lspkind-nvim")
+	use("nvim-lua/lsp_extensions.nvim")
+	use("glepnir/lspsaga.nvim")
+	use("simrat39/symbols-outline.nvim")
+	use("L3MON4D3/LuaSnip")
+	use("saadparwaiz1/cmp_luasnip")
+
+	-- formatting & linting
+	use("jose-elias-alvarez/null-ls.nvim")
+	use("jayp0521/mason-null-ls.nvim")
+
+	use({
+		"nvim-lualine/lualine.nvim",
+		requires = { "nvim-tree/nvim-web-devicons", opt = true },
+	})
+
+	use({
+		"lewis6991/gitsigns.nvim",
+		config = function()
+			require("gitsigns").setup()
+		end,
+	})
+
+	use({
+		"folke/trouble.nvim",
+		requires = "kyazdani42/nvim-web-devicons",
+		config = function()
+			require("trouble").setup({
+				-- your configuration comes here
+				-- or leave it empty to use the default settings
+				-- refer to the configuration section below
+			})
+		end,
+	})
+
+	-- Automatically set up your configuration after cloning packer.nvim
+	-- Put this at the end after all plugins
+	if packer_bootstrap then
+		require("packer").sync()
+	end
+end)