From 7443a4ac086000b1d2a7d5af6685cc5ef9537b9d Mon Sep 17 00:00:00 2001
From: Etan Kissling <etan@status.im>
Date: Tue, 16 Jan 2024 01:58:07 +0100
Subject: [PATCH] load Ethereum mainnet KZG setup on Gnosis networks (#5756)

Gnosis networks re-use the trusted setup from Ethereum mainnet.
Load it to support Deneb.
---
 beacon_chain/conf.nim         | 6 ++----
 beacon_chain/spec/presets.nim | 2 +-
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/beacon_chain/conf.nim b/beacon_chain/conf.nim
index 2fe506cdc..f9fa2a321 100644
--- a/beacon_chain/conf.nim
+++ b/beacon_chain/conf.nim
@@ -1483,10 +1483,8 @@ proc loadKzgTrustedSetup*(): Result[void, string] =
     trustedSetup = staticRead(
       vendorDir & "/nim-kzg4844/kzg4844/csources/src/trusted_setup.txt")
 
-  if const_preset == "mainnet" or const_preset == "minimal":
-    Kzg.loadTrustedSetupFromString(trustedSetup)
-  else:
-    ok()
+  static: doAssert const_preset in ["mainnet", "gnosis", "minimal"]
+  Kzg.loadTrustedSetupFromString(trustedSetup)
 
 proc loadKzgTrustedSetup*(trustedSetupPath: string): Result[void, string] =
   try:
diff --git a/beacon_chain/spec/presets.nim b/beacon_chain/spec/presets.nim
index 6dcceb656..b113d9d60 100644
--- a/beacon_chain/spec/presets.nim
+++ b/beacon_chain/spec/presets.nim
@@ -559,7 +559,7 @@ elif const_preset == "minimal":
   )
 
 else:
-  {.error: "Only mainnet and minimal presets supported".}
+  {.error: "Only mainnet, gnosis, and minimal presets supported".}
   # macro createConstantsFromPreset*(path: static string): untyped =
   #   result = newStmtList()