<dependency> <groupId>io.github.classgraph</groupId> <artifactId>ciris</artifactId> <version>0.13.0</version> </dependency> import ciris.ConfigValue; import ciris.ConfigKeyType; import ciris.cats.effect._ import cats.effect.IO object Main extends App { def getApiKey: IO[ConfigValue[String]] = { env("API_KEY").as[ConfigValue[String]] } val apiKey: IO[String] = getApiKey.map(_.load[IO]) }