From 60f80682c5303b213859a954d4d43c9e3b460aee Mon Sep 17 00:00:00 2001
From: Dennis Kobert <dennis@kobert.dev>
Date: Wed, 5 Aug 2026 19:25:17 +0000
Subject: [PATCH] Collapse duplicate proto nodes when assigning stable ids

---
 node-graph/graph-craft/src/proto.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/node-graph/graph-craft/src/proto.rs b/node-graph/graph-craft/src/proto.rs
index 2d922e1b1f..d1c40cb725 100644
--- a/node-graph/graph-craft/src/proto.rs
+++ b/node-graph/graph-craft/src/proto.rs
@@ -258,6 +258,11 @@ impl ProtoNetwork {
 			self.replace_node_id(&outwards_edges, NodeId(index as u64), sni);
 			self.nodes[index].0 = sni;
 		}
+
+		// Equal nodes hash to one id; the copies must go, or a pass that
+		// rewrites one of them (like adapter splicing) leaves the others stale.
+		let mut seen = HashSet::new();
+		self.nodes.retain(|(id, _)| seen.insert(*id));
 	}
 
 	// TODO: Remove