From 6b1e5208451727bb3c949cf331f9e892ff85fd3d Mon Sep 17 00:00:00 2001
From: Daniel Maddern <daniel.maddern@illuvium.io>
Date: Sun, 16 Aug 2026 16:41:50 +0700
Subject: [PATCH] Fix graph champion version promotion

---
 graph/bootstrap.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/graph/bootstrap.py b/graph/bootstrap.py
index b443aef..a33614e 100644
--- a/graph/bootstrap.py
+++ b/graph/bootstrap.py
@@ -64,12 +64,14 @@ def _champion_graph(spec) -> ExecutionGraphVersion:
         name=spec.name,
         defaults={"graph_type": spec.graph_type, "description": str(spec.metadata.get("description", ""))},
     )
+    ExecutionGraphVersion.objects.filter(graph=definition, status=ExecutionGraphVersionStatus.CHAMPION).exclude(version=spec.version).update(status=ExecutionGraphVersionStatus.RETIRED)
     version, created = ExecutionGraphVersion.objects.get_or_create(
         graph=definition,
         version=spec.version,
         defaults={"status": ExecutionGraphVersionStatus.CHAMPION, "graph_spec": spec.to_dict(), "metadata": {"immutable_after_use": True}, "promoted_at": timezone.now()},
     )
     if not created and version.status != ExecutionGraphVersionStatus.CHAMPION:
+        ExecutionGraphVersion.objects.filter(graph=definition, status=ExecutionGraphVersionStatus.CHAMPION).exclude(pk=version.pk).update(status=ExecutionGraphVersionStatus.RETIRED)
         version.status = ExecutionGraphVersionStatus.CHAMPION
         version.promoted_at = timezone.now()
         version.save(update_fields=["status", "promoted_at"])