Passing arguments to multiple tasks in SBT - scala

Question

In sbt 0.13.9, I want to be able to run a task which takes in arguments from the command line and then passes those arguments on to two other tasks.
My initial attempt was something along the lines of:
lazy val logTask = InputKey[Unit](...)
lazy val runTask = InputKey[Unit](...)
lazy val TestCase = config("testCase") extend Test
runTask in TestCase := Def.inputTaskDyn {
val args: Seq[String] = spaceDelimited("<arg>").parsed
runReg(args)
}.evaluated
logTask in TestCase := Def.inputTaskDyn {
val args: Seq[String] = spaceDelimited("<arg>").parsed
log(args)
}.evaluated
def runReg(args: Seq[String]) = Def.taskDyn {
val argString = args.mkString(" ")
(logTask in TestCase).toTask(argString).value
(testOnly in TestCase).toTask(s" $argString")
}
def log(args: Seq[String]) {
(runMain in TestCase).toTask(s" LoggingClass $args.mkString(" ")")
}
But then it complains of an Illegal Dynamic Reference argString in (logTask in TestCase).toTask(argsString).value
I've also tried something like:
runTask in TestCase := {
val args: Seq[String] = spaceDelimited("<arg>").parsed
log(args).value
runReg(args).value
}
which also has an Illegal Dynamic Reference for args.
Is there any way of passing in parsed arguments into two tasks and run one after the other?
Thanks for any help.

Answer 1

Instead of assigning args.mkString(" ") to a variable, just pass it without assigning to any variable like below:
(logTask in TestCase).toTask(args.mkString(" ")).value
Update 1:
This kind of issues can also be sorted out with lazy initialization in sbt. So, try something like below:
lazy val argString = args.mkString(" ")
(logTask in TestCase).toTask(argString).value