sbt: cross-publish from build.sbt

Question

Currently, I'm using SBT scripted plugin for testing. To publish a plugin into the local repository, following code snippet in build.sbt is used:

crossScalaVersions := Seq(scalaVersion.value,"2.11.7")

scriptedDependencies := {
      val local = publishLocal.value
}

This way the artefact gets published into the local repository, but only for the version scalaVersion.value. I would like to have it cross-published for both scala versions. How can I do that?

Answer 1

As mentioned in the comments by @srjd you can use the + prefix.

As mentioned in this section of the docs

To build against all versions listed in crossScalaVersions, prefix the action to run with +. For example:

> + test

A typical way to use this feature is to do development on a single Scala version (no + prefix) and then cross-build (using +) occasionally and when releasing.

This works for any action, including publisLocal.

> + publishLocal