nvim: re-add automatic plugin install

.config/nvim/lua/my/plugins.lua

@@ -10,7 +10,7 @@ packer.init()
 
 packer.use 'https://github.com/wbthomason/packer.nvim'
 
--- source file and compile plugins when config file is written
+-- source file, install and compile plugins when config file is written
 vim.api.nvim_create_augroup('packer_user_config', { clear = true })
 vim.api.nvim_create_autocmd(
     { 'BufWritePost' },
@@ -21,13 +21,27 @@ vim.api.nvim_create_autocmd(
             -- exclude plugins.lua, because that would re-init packer
             if (not vim.api.nvim_buf_get_name(0):match('plugins.lua$')) then
                 vim.cmd([[
-                    echom 'reloading config file…'
+                    echom 'reloading config file and installing new plugins…'
                     source <afile>
-                    PackerCompile
+                    PackerInstall
-                    redraw
                 ]])
             end
         end
     }
 )
-
+vim.api.nvim_create_autocmd(
+    { 'User' },
+    {
+        group = 'packer_user_config',
+        pattern = 'PackerComplete',
+        command = [[echom 'compiling plugins…' | PackerCompile]]
+    }
+)
+vim.api.nvim_create_autocmd(
+    { 'User' },
+    {
+        group = 'packer_user_config',
+        pattern = 'PackerCompileDone',
+        command = [[echom 'plugins compiled.']]
+    }
+)