blockscout/apps/indexer/config/prod.exs

use Mix.Config

variant =
  if is_nil(System.get_env("ETHEREUM_JSONRPC_VARIANT")) do
    "parity"
  else
    System.get_env("ETHEREUM_JSONRPC_VARIANT")
    |> String.split(".")
    |> List.last()
    |> String.downcase()
  end

# Import variant specific config. This must remain at the bottom
# of this file so it overrides the configuration defined above.
import_config "prod/#{variant}.exs"