my demo first config lua

lua/alpha/packer_install.lua

@@ -0,0 +1,27 @@
+local download_packer = function()
+  if vim.fn.input "Download Packer? (y for yes)" ~= "y" then
+    return
+  end
+
+  local directory = string.format("%s/site/pack/packer/start/", vim.fn.stdpath "data")
+
+  vim.fn.mkdir(directory, "p")
+
+  local out = vim.fn.system(
+    string.format("git clone %s %s", "https://github.com/wbthomason/packer.nvim", directory .. "/packer.nvim")
+  )
+
+  print(out)
+  print "Downloading packer.nvim..."
+  print "( You'll need to restart now )"
+end
+
+return function()
+  if not pcall(require, "packer") then
+    download_packer()
+
+    return true
+  end
+
+  return false
+end