FEAT: added check for non-calculate world update

pym/update/update_tasks.py

@@ -26,3 +26,4 @@ class EmergeMark:
     RevdepRebuild = "revdep rebuild"
     Prelink = "prelink"
     Automagic = "check for auto depends"
+    SaveTag = "save latest calculate update tag"

pym/update/utils/cl_update.py

@@ -259,6 +259,13 @@ class UpdateConditions():
             return False
         else:
             return True
+    
+    @staticmethod
+    def check_world_updated_after_tag_save():
+        def func():
+            task = EmergeLog(EmergeLogNamedTask(EmergeMark.SaveTag))
+            return task.did_update_world_happen()
+        return func
 
 class ClUpdateAction(Action):
     """
@@ -416,6 +423,13 @@ class ClUpdateAction(Action):
         {'name': 'check_run',
          'method': 'Update.checkRun(cl_update_wait_another_set)'
         },
+        {'name': 'check_if_world_was_updated',
+         'method': 'Update.update_set_current_saved_tag()',
+        #  'condition': UpdateConditions.check_world_updated_after_tag_save()
+         'condition': lambda Get: (Get('cl_update_sync_only_set') == 'off' and \
+                Get('cl_update_pretend_set') == 'off' and \
+                UpdateConditions.check_world_updated_after_tag_save()()) 
+        },
         ] + get_synchronization_tasks("Update") + [
         {'name': 'system_configuration',
          'group': __("System configuration"),
@@ -477,7 +491,8 @@ class ClUpdateAction(Action):
          'depend': (Tasks.success() & Tasks.hasnot("interrupt") &
              Tasks.success_all("update") & Tasks.hasnot("check_schedule")), 
          'condition': lambda Get: Get('cl_update_sync_only_set') == 'off' and
-                Get('cl_update_pretend_set') == 'off'
+                Get('cl_update_pretend_set') == 'off',
+         'decoration': 'Update.update_task("%s")' % EmergeMark.SaveTag
          },
         {'name': 'clear_migration_host',
          'method': 'Update.delete_binhost()',