fix: Update neth image; improve genesis tool (#73)

- Update Nethermind image; 
- Improve genesis generation tool for Nethermind.

src/package_io/input_parser.star

@@ -8,7 +8,7 @@ DEFAULT_EL_IMAGES = {
     "op-geth": "us-docker.pkg.dev/oplabs-tools-artifacts/images/op-geth:latest",
     "op-reth": "ghcr.io/paradigmxyz/op-reth:latest",
     "op-erigon": "testinprod/op-erigon:latest",
-    "op-nethermind": "nethermindeth/nethermind:op-c482d56",
+    "op-nethermind": "nethermind/nethermind:latest",
     "op-besu": "ghcr.io/optimism-java/op-besu:latest",
 }
 

static_files/chainspec_template/gen2spec.jq

@@ -1,3 +1,7 @@
+# Taken from https://github.com/ethereum/hive and modified to support more cases for Ethereum / OP networks
+
+# Usage: cat genesis.json | jq --from-file gen2spec.jq  > chainspec.json
+
 # Removes all empty keys and values in input.
 def remove_empty:
   . | walk(
@@ -43,6 +47,13 @@ def infix_zeros_to_length(s;l):
 ;
 
 # This gives the consensus engine definition for the ethash engine.
+def ethash:
+  {
+    "Ethash": {}
+  }
+;
+
+# This gives the consensus engine definition for the op engine.
 def optimism:
   {
     "Optimism": {
@@ -63,7 +74,7 @@ def optimism:
 
 {
   "version": "1",
-  "engine": optimism,
+  "engine": (if .config.optimism != null then optimism else ethash end),
   "params": {
     # Tangerine Whistle
     "eip150Transition": "0x0",
@@ -130,7 +141,7 @@ def optimism:
     "eip1153TransitionTimestamp": .config.cancunTime|to_hex,
     "eip5656TransitionTimestamp": .config.cancunTime|to_hex,
     "eip6780TransitionTimestamp": .config.cancunTime|to_hex,
-
+    
     #Prague
     "rip7212TransitionTimestamp": .config.pragueTime|to_hex,
 
@@ -158,5 +169,5 @@ def optimism:
     "excessBlobGas": .excessBlobGas,
     "parentBeaconBlockRoot": .parentBeaconBlockRoot,
   },
-  "accounts": ((.alloc|with_entries(.key|="0x"+.))),
-}|remove_empty
+  "accounts": ((.alloc|with_entries(.key|=(if startswith("0x") then . else "0x" + . end)))),
+}|remove_empty