Set java options for running playframework project in sbt

Question

I can run with overriden java options my playframework application using: run -Dprop1=val1 -Dprop2=val2 . It works perfectly. But when I'm trying to do it via sbt build - props are not available.

So, I have scala file where my propject defined:

object PrjBuild extends Build  {
 val runSettings = Seq(
    fork in run := true,
    (javaOptions in run) ++= Seq(
      "-Dprop1=val1",
      "-Dprop2=val2")
  )

   lazy val root = Project(id = "my-play-project",
    base = file("."),
    settings = Seq(
      // some options here ...
      routesGenerator := InjectedRoutesGenerator
    ) ++ runSettings
  ).enablePlugins(PlayScala)
}

Please advice what am I doing wrong. I was relying on sbt fork documentation: http://www.scala-sbt.org/0.13/docs/Forking.html

But actually I would prefer to work without fork ing as run -Dp1=v1 does not use fork ing. I want to perform same props setup but programmatically.

Answer 1

When you use run without forking, you are using the same JVM as SBT. If you want some props to be available in this JVM, you need to start SBT with them:

sbt -Dprop1=val1 -Dprop2=val2