Minify chain config

Dockerfile

@@ -1,6 +1,12 @@
 # syntax=docker/dockerfile:1
 FROM ghcr.io/foundry-rs/foundry:v1.4.2
 
+# Install dependencies (jq)
+USER root
+RUN apt-get update && \
+    apt-get install -y jq
+USER foundry
+
 # Copy code into container
 WORKDIR /app
 COPY . .

generate.sh

@@ -23,5 +23,23 @@ forge script script/Predeploys.s.sol:Predeploys \
   --chain-id $CHAIN_ID \
   > /dev/null
 
+# Minify the chainConfig property in the generated genesis file
+# NOTE: we need to minify the chainConfig because nitro will use it to obtain the genesis blockhash,
+# and if there are any unnecessary whitespaces, the blockhash will be different from what is found on-chain.
+PLACEHOLDER="__CONFIG_MINIFIED__"
+GENESIS_FILE="genesis/genesis.json"
+config_minified=$(jq -c '.config' "$GENESIS_FILE")
+
+# Set the placeholder in the chainConfig property and save the result
+tmp=$(mktemp)
+jq --arg ph "$PLACEHOLDER" '.config = $ph' "$GENESIS_FILE" | jq '.' > "$tmp"
+
+# Replace the placeholder with the minified config
+awk -v ph="\"$PLACEHOLDER\"" -v rep="$config_minified" '
+  { sub(ph, rep); print }
+' "$tmp" > "$GENESIS_FILE"
+
+rm "$tmp"
+
 # Output the generated genesis file
 cat genesis/genesis.json

genesis/genesis.json

@@ -236,41 +236,11 @@
     }
   },
   "coinbase": "0x0000000000000000000000000000000000000000",
-  "config": {
-    "chainId": 31337,
-    "homesteadBlock": 0,
-    "daoForkBlock": null,
-    "daoForkSupport": true,
-    "eip150Block": 0,
-    "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
-    "eip155Block": 0,
-    "eip158Block": 0,
-    "byzantiumBlock": 0,
-    "constantinopleBlock": 0,
-    "petersburgBlock": 0,
-    "istanbulBlock": 0,
-    "muirGlacierBlock": 0,
-    "berlinBlock": 0,
-    "londonBlock": 0,
-    "clique": {
-      "period": 0,
-      "epoch": 0
-    },
-    "arbitrum": {
-      "EnableArbOS": true,
-      "AllowDebugPrecompiles": false,
-      "DataAvailabilityCommittee": false,
-      "InitialArbOSVersion": 40,
-      "InitialChainOwner": "0x3f1Eae7D46d88F08fc2F8ed27FCb2AB183EB2d0E",
-      "GenesisBlockNum": 0,
-      "MaxCodeSize": 24576,
-      "MaxInitCodeSize": 49152
-    }
-  },
+  "config": {"chainId":31337,"homesteadBlock":0,"daoForkBlock":null,"daoForkSupport":true,"eip150Block":0,"eip150Hash":"0x0000000000000000000000000000000000000000000000000000000000000000","eip155Block":0,"eip158Block":0,"byzantiumBlock":0,"constantinopleBlock":0,"petersburgBlock":0,"istanbulBlock":0,"muirGlacierBlock":0,"berlinBlock":0,"londonBlock":0,"clique":{"period":0,"epoch":0},"arbitrum":{"EnableArbOS":true,"AllowDebugPrecompiles":false,"DataAvailabilityCommittee":false,"InitialArbOSVersion":40,"InitialChainOwner":"0x3f1Eae7D46d88F08fc2F8ed27FCb2AB183EB2d0E","GenesisBlockNum":0}},
   "difficulty": "0x1",
   "extraData": "0x",
   "gasLimit": "0x1C9C380",
   "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
   "nonce": "0x0",
   "timestamp": "0x0"
-}
+}

script/Predeploys.s.sol

@@ -803,7 +803,7 @@ contract Predeploys is Script {
                 vm.toString(arbOSVersion),
                 ',"InitialChainOwner":"',
                 vm.toString(chainOwner),
-                '","GenesisBlockNum":0,"MaxCodeSize":24576,"MaxInitCodeSize":49152}}'
+                '","GenesisBlockNum":0}}'
             )
         );
         vm.serializeString(genesisJson, "nonce", "0x0");