Fix runtime definition of ETHEREUM_JSONRPC_VARIANT variable

CHANGELOG.md

@@ -22,7 +22,7 @@
 ### Chore
 
 - [#6183](https://github.com/blockscout/blockscout/pull/6183) - Transparent coin name definition
-- [#6155](https://github.com/blockscout/blockscout/pull/6155) - Refactor Ethereum JSON RPC variants
+- [#6155](https://github.com/blockscout/blockscout/pull/6155), [#6189](https://github.com/blockscout/blockscout/pull/6189) - Refactor Ethereum JSON RPC variants
 - [#6125](https://github.com/blockscout/blockscout/pull/6125) - Rename obsolete "parity" EthereumJSONRPC.Variant to "nethermind"
 - [#6124](https://github.com/blockscout/blockscout/pull/6124) - Docker compose: add config for Erigon
 - [#6053](https://github.com/blockscout/blockscout/pull/6053) - Bump jest-environment-jsdom from 29.0.1 to 29.0.2 in /apps/block_scout_web/assets

apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/variant.ex

@@ -96,7 +96,7 @@ defmodule EthereumJSONRPC.Variant do
             ) :: {:ok, [raw_trace_params]} | {:error, reason :: term} | :ignore
 
   def get do
-    variant = Application.get_env(:ethereum_jsonrpc, __MODULE__)[:type]
+    variant = System.get_env("ETHEREUM_JSONRPC_VARIANT", "nethermind")
 
     cond do
       is_nil(variant) ->

config/runtime.exs

@@ -168,8 +168,6 @@ config :ethereum_jsonrpc, EthereumJSONRPC.Geth, debug_trace_transaction_timeout:
 config :ethereum_jsonrpc, EthereumJSONRPC.PendingTransaction,
   type: System.get_env("ETHEREUM_JSONRPC_PENDING_TRANSACTIONS_TYPE", "default")
 
-config :ethereum_jsonrpc, EthereumJSONRPC.Variant, type: System.get_env("ETHEREUM_JSONRPC_VARIANT", "nethermind")
-
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 ### Explorer ###
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