check gitlab finishing its async tasks after creating merge request

src/foxops/hosters/gitlab.py

@@ -45,6 +45,7 @@ class MergeRequest(TypedDict):
     sha: str
     state: str
     merge_status: str
+    detailed_merge_status: str
     merge_commit_sha: str | None
     head_pipeline: dict | None
 
@@ -153,6 +154,24 @@ async def merge_request(
             with_automerge=with_automerge,
         )
 
+        # wait until Gitlab finished mergability checks
+        for _ in range(5):
+            if merge_request["detailed_merge_status"] not in ["preparing", "checking", "unchecked"]:
+                break
+
+            response = await self.client.get(
+                f"/projects/{quote_plus(incarnation_repository)}/merge_requests/{merge_request['iid']}"
+            )
+            response.raise_for_status()
+            merge_request = response.json()
+
+            await asyncio.sleep(5)
+        else:
+            logger.warning(
+                f"Merge request {merge_request['web_url']} is still in state 'checking' after 5 retries, "
+                f"continuing with the assumption that it is mergeable"
+            )
+
         if with_automerge:
             logger.info(f"Triggering automerge for the new Merge Request {merge_request['web_url']}")
             merge_request = await self._automerge_merge_request(merge_request)

src/foxops/logger.py

@@ -34,6 +34,9 @@ def configure_uvicorn_logging():
 
 
 def setup_logging(level: int | str) -> None:
+    if structlog.is_configured():
+        return
+
     shared_processors: Sequence[Processor] = [
         merge_contextvars,
         structlog.stdlib.add_log_level,