add project_root to debug_meta in event

sentry_sdk/client.py

@@ -474,12 +474,13 @@ def _prepare_event(
         scope,  # type: Optional[Scope]
     ):
         # type: (...) -> Optional[Event]
+        is_transaction = event.get("type") == "transaction"
+        is_checkin = event.get("type") == "check_in"
 
         if event.get("timestamp") is None:
             event["timestamp"] = datetime.now(timezone.utc)
 
         if scope is not None:
-            is_transaction = event.get("type") == "transaction"
             spans_before = len(event.get("spans", []))
             event_ = scope.apply_to_event(event, hint, self.options)
 
@@ -541,6 +542,11 @@ def _prepare_event(
         if event.get("platform") is None:
             event["platform"] = "python"
 
+        if not is_transaction and not is_checkin:
+            event.setdefault("debug_meta", {}).update(
+                {"project_root": self.options["project_root"]}
+            )
+
         event = handle_in_app(
             event,
             self.options["in_app_exclude"],