utilize SCRAPY_SETTINGS_MODULE env var

Author: vdusek

src/apify/_actor.py

@@ -4,7 +4,6 @@
 import os
 import sys
 from datetime import timedelta
-from importlib.util import find_spec
 from typing import TYPE_CHECKING, Any, Callable, Literal, TypeVar, cast, overload
 
 from lazy_object_proxy import Proxy
@@ -267,15 +266,12 @@ async def finalize() -> None:
         await asyncio.wait_for(finalize(), cleanup_timeout.total_seconds())
         self._is_initialized = False
 
-        # Find out if Scrapy is installed.
-        scrapy_installed = find_spec('scrapy') is not None
-
         if is_running_in_ipython():
             self.log.debug(f'Not calling sys.exit({exit_code}) because Actor is running in IPython')
         elif os.getenv('PYTEST_CURRENT_TEST', default=False):  # noqa: PLW1508
             self.log.debug(f'Not calling sys.exit({exit_code}) because Actor is running in an unit test')
-        elif scrapy_installed:
-            self.log.debug(f'Not calling sys.exit({exit_code}) because Actor is running in Scrapy')
+        elif os.getenv('SCRAPY_SETTINGS_MODULE'):
+            self.log.debug(f'Not calling sys.exit({exit_code}) because Actor is running with Scrapy')
         else:
             sys.exit(exit_code)