clone cms with menus, make menus standalone app

cms/utils/setup.py

@@ -0,0 +1,73 @@
+from django.core.exceptions import ImproperlyConfigured
+from django.template import engines
+from django.template.backends.django import DjangoTemplates
+
+from cms.app_registration import (
+    autodiscover_cms_configs,
+    backwards_compatibility_config,
+    configure_cms_apps,
+    get_cms_extension_apps,
+    ready_cms_apps,
+)
+from cms.utils.compat.dj import is_installed as app_is_installed
+
+
+def validate_dependencies():
+    """
+    Check for installed apps, their versions and configuration options
+    """
+    from cms.utils.mptree import get_tree_backend
+
+    # treebeard is only required for the (default) treebeard tree backend; the
+    # dependency-free mptree backend neither imports nor needs it.
+    if get_tree_backend() == "treebeard" and not app_is_installed("treebeard"):
+        raise ImproperlyConfigured(
+            'django CMS requires django-treebeard. Please install it and add "treebeard" to INSTALLED_APPS.'
+        )
+
+
+def validate_settings():
+    """
+    Check project settings file for required options
+    """
+    django_engines = [engine for engine in engines.all() if isinstance(engine, DjangoTemplates)]
+
+    if not django_engines:
+        raise ImproperlyConfigured(
+            "django CMS requires a template engine that inherits from "
+            "'django.template.backends.django.DjangoTemplates'."
+        )
+
+    engine = django_engines[0]
+    context_processors = engine.engine.context_processors
+    template_request = "django.template.context_processors.request"
+
+    if template_request not in context_processors:
+        raise ImproperlyConfigured(
+            "django CMS requires django.template.context_processors.request in "
+            "'django.template.backends.django.DjangoTemplates' context processors."
+        )
+
+
+def setup():
+    """
+    Gather all checks and validations
+    """
+    from cms.plugin_pool import plugin_pool
+
+    validate_dependencies()
+    validate_settings()
+    plugin_pool.validate_templates()
+
+
+def setup_cms_apps():
+    """
+    Check for django apps which provide functionality that extends the
+    cms. Configure all apps which have configs that declare use of
+    any of this functionality.
+    """
+    autodiscover_cms_configs()
+    cms_apps = get_cms_extension_apps()
+    configure_cms_apps(cms_apps)
+    backwards_compatibility_config()
+    ready_cms_apps(cms_apps)