Can a parsed inputTask be used to invoke a runTask in sbt? - scala

Question

I'm trying to use sbt as a general task runner (similar to rake/npm). I can get it to parse input the way I want through an inputTask, but I'm absolutely stumped how to use this to invoke a runTask/fullRunTask
val partners: List[Parser[String]] = List("foo", "bar")
val partnerParser = partners.reduce(_ | _)
val acceptArgs = (' ' ~> partnerParser ~ (' ' ~> StringBasic))
lazy val importDump = inputKey[Unit]("Import static data dump")
lazy val importDumpTask = importDump := {
val (arg1, arg2) = acceptArgs.parsed
// how can I make this call?
// ... runTask(Compile, "foo.bar.baz.DoIt.dispatch", arg1, arg2).value
}
I understand that you can't directly call tasks from other tasks, only "depend" on them so the above code won't work.
I know I can do something like
mainClass := Some("foo.bar.baz.DoIt.dispatch")
(runMain in Compile).toTask(s" foo.bar.baz.DoIt.dispatch $arg1 $arg2").value
But that means I can't use any of the parsing/autocomplete functionality.
So my question is:
How can I parse input with an inputTask, then call a main method in my code with the resulting arguments?

Answer 1

This is extremely painful to do in sbt. I would recommend writing a shell script (or using sbt's built-in Process support).
That said, it's possible to do this by writing a new Command that mutates the State object provided, adding the tasks you want to run as items in the remainingCommands field.