fix bootstrap for packer

lua/configs/plugins/packer.lua

@@ -1,30 +1,19 @@
-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
-    PACKER_BOOTSTRAP = fn.system({ 'git', 'clone', '--depth', '1', 'https://github.com/wbthomason/packer.nvim',
-        install_path })
+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
 
--- Only required if you have packer configured as `opt`
-vim.cmd [[packadd packer.nvim]]
+local packer_bootstrap = ensure_packer()
 
-local status_ok, packer = pcall(require, 'packer')
-if not status_ok then
-    return
-end
-
-packer.init {
-    display = {
-        open_fn = function()
-            return require('packer.util').float {
-                border = 'rounded'
-            }
-        end
-    }
-}
-return packer.startup(function(use)
+return require('packer').startup(function(use)
+    use 'wbthomason/packer.nvim'
     -- My plugins here
-    use { 'wbthomason/packer.nvim' }
     use { 'lewis6991/impatient.nvim' }
     use {
         'nvim-treesitter/nvim-treesitter',
@@ -177,9 +166,10 @@ return packer.startup(function(use)
             -- vim.cmd('colorscheme rose-pine')
         end
     })
-    -- Automatically set up your configuration after cloning packer.nvim,
+
+    -- Automatically set up your configuration after cloning packer.nvim
     -- Put this at the end after all plugins
-    if PACKER_BOOTSTRAP then
+    if packer_bootstrap then
         require('packer').sync()
     end
 end)