From b46c206dd71eee9318a5f13b51b6f6c23c556d8e Mon Sep 17 00:00:00 2001
From: City <125218114+city96@users.noreply.github.com>
Date: Thu, 5 Sep 2024 05:32:01 +0200
Subject: [PATCH] double patch issue fix for lowvram

Potential fix, lowvram weights are called via `patch_weight_to_device` on each run and it was possible to apply the same patch multiple times on subsequent generations.
---
 nodes.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/nodes.py b/nodes.py
index 52e3e92..534c1ba 100644
--- a/nodes.py
+++ b/nodes.py
@@ -147,7 +147,9 @@ class GGUFModelPatcher(comfy.model_patcher.ModelPatcher):
         if is_quantized(weight):
             out_weight = weight.to(device_to)
             patches = move_patch_to_device(patches, self.load_device if self.patch_on_device else self.offload_device)
-            out_weight.patches.append((calculate_weight, patches, key))
+            patch = (calculate_weight, patches, key)
+            if patch not in out_weight.patches:
+                out_weight.patches.append(patch)
         else:
             inplace_update = self.weight_inplace_update or inplace_update
             if key not in self.backup: