How to execute runMain from custom task?

If anybody wanted to run the main class with arguments computed basing on settings, you need dynamic tasks. For example:

val myRun = taskKey[Unit]("...")

myRun := Def.taskDyn {
  val appName = name.value
  Def.task {
    (runMain in createApi in Compile)
      .toTask(s" com.softwaremill.MyMain $appName")
      .value
  }
}.value

TaskKey[Unit]("myTask") := (runMain in Compile).toTask(" com.example.Main arg1 arg2").value

runMain is an InputTask. InputTask has toTask method since 0.13.1.

https://github.com/sbt/sbt/commit/9dcb8727d819fb
https://github.com/sbt/sbt/blob/v0.13.6/main/settings/src/main/scala/sbt/InputTask.scala#L33
http://www.scala-sbt.org/0.13/docs/Input-Tasks.html#Get+a+Task+from+an+InputTask

Tags:

Sbt

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