distinct on field not supported by sqlite

apps/activity/views.py

@@ -139,7 +139,7 @@ class ActivityEntryView(LoginRequiredMixin, TemplateView):
                     | Q(name__regex=pattern)
                     | Q(normalized_name__regex=Alias.normalize(pattern)))) \
             .filter(PermissionBackend.filter_queryset(self.request.user, Alias, "view"))\
-            .distinct("username")[:20]
+            .distinct()[:20]
         for note in note_qs:
             note.type = "Adhérent"
             note.activity = activity

apps/permission/backends.py

@@ -43,7 +43,7 @@ class PermissionBackend(ModelBackend):
                 rolepermissions__role__membership__date_end__gte=datetime.date.today(),
                 type=t,
                 mask__rank__lte=get_current_session().get("permission_mask", 0),
-        ).distinct('club', 'pk',)
+        ).distinct()
 
     @staticmethod
     def permissions(user, model, type):