fix some breaking changes and linters

apps/permission/scopes.py

@@ -44,6 +44,8 @@ class PermissionOAuth2Validator(OAuth2Validator):
         subset of permissions.
         """
 
+        oidc_claim_scope = None  # fix breaking change of django-oauth-toolkit 2.0.0
+
         valid_scopes = set()
 
         for t in Permission.PERMISSION_TYPES:

note_kfet/admin.py

@@ -25,8 +25,8 @@ admin_site.register(Site, SiteAdmin)
 
 # Add external apps model
 if "oauth2_provider" in settings.INSTALLED_APPS:
-    from oauth2_provider.admin import Application, ApplicationAdmin, Grant, \
-        GrantAdmin, AccessToken, AccessTokenAdmin, RefreshToken, RefreshTokenAdmin
+    from oauth2_provider.admin import ApplicationAdmin, GrantAdmin, AccessTokenAdmin, RefreshTokenAdmin
+    from oauth2_provider.model import Application, Grant, AccessToken, RefreshToken
     admin_site.register(Application, ApplicationAdmin)
     admin_site.register(Grant, GrantAdmin)
     admin_site.register(AccessToken, AccessTokenAdmin)

note_kfet/settings/base.py

@@ -263,6 +263,9 @@ OAUTH2_PROVIDER = {
     'REFRESH_TOKEN_EXPIRE_SECONDS': timedelta(days=14),
 }
 
+# PKCE (fix a breaking change of django-oauth-toolkit 2.0.0)
+PKCE_REQUIRED = False
+
 # Take control on how widget templates are sourced
 # See https://docs.djangoproject.com/en/2.2/ref/forms/renderers/#templatessetting
 FORM_RENDERER = 'django.forms.renderers.TemplatesSetting'