run h2 console from sbt

build.sbt

// Method 1 Create a task
// It can throw java.util.NoSuchElementException: head of empty list if you don't have h2 dependency

lazy val h2Console = taskKey[Int]("Init H2 console task")
h2Console :=  (Compile /  dependencyClasspathAsJars)
  .value
  .map(_.data)
  .filter(_.getPath.contains("h2database"))
  .map(h2database => Process(s"java -jar ${h2database} org.h2.tools.Server").!)
  .head

// Method 2 Create a command
val h2Command = Command.command("h2Console") {
  state =>
    Project.runTask(Compile / dependencyClasspathAsJars, state)
      .get
      ._2
      .toEither
      .fold(
        exception => exception.printStackTrace(),
        value => value.map(_.data).filter(_.getPath.contains("h2database")).map(file => Process(s"java -jar ${file} org.h2.tools.Server").!).head
      )
    state
}

commands += h2Command