[nvim] feat: packer boostrapping on first install

.config/nvim/lua/plugin/packer.lua

@@ -4,14 +4,19 @@
 -- Description   : neovim plugins file
 
 
-local execute = vim.api.nvim_command
-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", "https://github.com/wbthomason/packer.nvim", install_path})
-        execute "packadd packer.nvim"
+local install_path = vim.fn.stdpath("data") .. "/site/pack/packer/start/packer.nvim"
+if vim.fn.empty(vim.fn.glob(install_path)) > 0 then
+        print("Cloning packer...")
+        PACKER_BOOTSTRAP = vim.fn.system({
+                "git",
+                "clone",
+                "--depth",
+                "1",
+                "https://github.com/wbthomason/packer.nvim",
+                install_path,
+        })
+        vim.cmd([[packadd packer.nvim]])
+        print("Done.")
 end
 
 return require("packer").startup(function()
@@ -102,4 +107,10 @@ return require("packer").startup(function()
                 "norcalli/nvim-colorizer.lua",
                 cmd = "ColorizerToggle"
         }
+
+
+        -- automatically setup the config after cloning
+        if PACKER_BOOTSTRAP then
+                require("packer").sync()
+        end
 end)