How to print/log val in sbt build?

Question

If we want to print/log a simple variable like,

lazy val config = ConfigFactory.load()

And inspect its value in sbt, then how do we do that?

When I just type it in sbt shell, I get:

> config

[error] Not a valid command: config

[error] Not a valid project ID: config

[error] Expected ':' (if selecting a configuration)

[error] Not a valid key: config (similar: configuration, deploy-configs, conflictManager)

[error] config

Answer 1

If you want to print something when you type a string in sbt console,you can add

lazy val configTest = settingKey[String]("example")

configTest := "config test"

Then you will get

> configTest
[info] config test