[fix] use get_domains to prevent mutation of nested dictionary

erpnext/setup/setup_wizard/domainify.py

@@ -4,7 +4,9 @@
 from __future__ import unicode_literals
 import frappe
 
-domains = {
+def get_domains():
+	'''Written as a function to prevent data mutation effects'''
+	return {
 		'Manufacturing': {
 			'desktop_icons': ['Item', 'BOM', 'Customer', 'Supplier', 'Sales Order',
 				'Production Order',  'Stock Entry', 'Purchase Order', 'Task', 'Buying', 'Selling',
@@ -56,6 +58,8 @@ domains = {
 	}
 
 def setup_domain(domain):
+	domains = get_domains()
+
 	if not domain in domains:
 		return