allow longer usernames

pandora/monkey_patch/models.py

@@ -0,0 +1,13 @@
+from django.contrib.auth.models import User
+from django.core.validators import MaxLengthValidator
+
+NEW_USERNAME_LENGTH = 255
+
+def monkey_patch_username():
+    username = User._meta.get_field("username")
+    username.max_length = NEW_USERNAME_LENGTH
+    for v in username.validators:
+        if isinstance(v, MaxLengthValidator):
+            v.limit_value = NEW_USERNAME_LENGTH
+
+monkey_patch_username()

pandora/settings.py

@@ -109,6 +109,7 @@ TEMPLATE_DIRS = (
 )
 
 INSTALLED_APPS = (
+    'monkey_patch',
     'django.contrib.auth',
     'django.contrib.contenttypes',
     'django.contrib.sessions',