# Pastebin Sdu5rlXp
lockfile = YAML.parse(File.read("shard.lock"))
result = lockfile.as_h
result_shards = result["shards"]
case result_shards
when Hash
  lockfile["shards"].each do |name, value|
    github = value["github"]
    version = "refs/tags/v#{value["version"]}"
    uri = "https://github.com/#{github}"

    args = ["--url", uri, "--rev", version, "--hash", "sha256", "--leave-dotGit"]
    process = Process.new("nix-prefetch-git", args: args, shell: true, input: true, output: nil, error: true)
    output = process.output.gets_to_end
    status = process.wait

    j = JSON.parse(output)

    found = result_shards.find{|k,v|
      case k
      when String
        k == name.as_s
      end
    }

    case found
    when {String, Hash}
      if found
        found_key = found[0]
        found_value = found[1]
        if found_key && found_value
          case found_value
          when Hash
            found_value["sha256"] = j["sha256"].as_s
          end
        end
      end
    end
  end
end

puts result.to_yaml