[Django] #34829: Django reports the “mutually exclusive” error for settings that do not contain STATICFILES_STORAGE.

[Django]

#34829: Django reports the “mutually exclusive” error for settings that do not
contain STATICFILES_STORAGE.
-------------------------------------+-------------------------------------
               Reporter:  Malik A.   |          Owner:  nobody
  Rumi                               |
                   Type:  Bug        |         Status:  new
              Component:  File       |        Version:  4.2
  uploads/storage                    |
               Severity:  Normal     |       Keywords:  mutually exclusive
           Triage Stage:             |      Has patch:  0
  Unreviewed                         |
    Needs documentation:  0          |    Needs tests:  0
Patch needs improvement:  0          |  Easy pickings:  0
                  UI/UX:  0          |
-------------------------------------+-------------------------------------
 There is no STATICFILES_STORAGE constant in my settings module. I took a
 look at the bytecode in pycache. There was no reference to
 STATICFILES_STORAGE there, either, but I did see a reference to
 STATICFILES_DIRS. I deleted all __pycache__ files and their folders, but
 the same identical error persisted.

 I looked at the source code that was generating the error:

       python3.11/site-packages/django/conf/__init__.py

 specifically, line 278, which happens to be inside the definition of a
 class Settings.

         if self.is_overridden("STATICFILES_STORAGE"):
             if self.is_overridden("STORAGES"):
                 raise ImproperlyConfigured(
                     "STATICFILES_STORAGE/STORAGES are mutually exclusive."
                 )
 The assumption seems to be that if both are overridden the dev is using
 both of them, and hence the error. Because I use white noise, it makes
 sense that STORAGES has been overridden. But since I have no reference to
 STATICFILES_STORAGE anywhere, it follows that the default value of
 global_settings is being inherited in my local settings, thus generating
 the error.

 django/django/conf/global_settings.py, line 630:

 STATICFILES_STORAGE =
 "django.contrib.staticfiles.storage.StaticFilesStorage"

 The problem here is that on line 274 of the same file, we have:

 STORAGES = {
     "default": {
         "BACKEND": "django.core.files.storage.FileSystemStorage",
     },
     "staticfiles": {
         "BACKEND":
 "django.contrib.staticfiles.storage.StaticFilesStorage",
     },
 }

 Are these constants mutually exclusive for everything ''but''
 global_settings? I commented the entire block:

             # if self.is_overridden("STATICFILES_STORAGE"):
             #     if self.is_overridden("STORAGES"):
             #         raise ImproperlyConfigured(
             #             "STATICFILES_STORAGE/STORAGES are mutually
 exclusive."
             #         )
             #     warnings.warn(STATICFILES_STORAGE_DEPRECATED_MSG,
 RemovedInDjango51Warning)


 And that worked:
         (chronicle-jltMOQ-O-py3.11)
 malikarumi@Tetuoan2:~/Projects/lifeandtimes/chronicle$ python manage.py
 runserver
         Watching for file changes with StatReloader
         Performing system checks...

         System check identified no issues (0 silenced).

-- 
Ticket URL: <https://code.djangoproject.com/ticket/34829>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.

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