I want to test my code against the latest bleeding edge Scala.
The answer for Scala 2.10 doesn't work anymore. What do I do?
resolvers += "nightlies" at "https://scala-ci.typesafe.com/artifactory/scala-release-temp/" scalaVersion := "2.12.1-abcd123-nightly" scalaBinaryVersion := "2.12" // or "2.11"
The Scala team no longer publishes
-SNAPSHOT versions of Scala. (Starting that again could be a community contribution; see this ticket.)
But the team does publish nightly builds, each with its own fixed version number. The version number of a nightly looks like e.g.
To tell sbt to use one of these nightlies, you need to do three things.
First, add the resolver where the nightlies are kept:
resolvers += "nightlies" at "https://scala-ci.typesafe.com/artifactory/scala-release-temp/"
Second, specify the Scala version:
scalaVersion := "2.12.1-abcd123-nightly"
But that isn't a real version number. Substitute a version number containing the 7-character SHA of a commit in the scala/scala repository for which a nightly build was published. You can look up the most recent published version by looking here: 2.12 or 2.11).
Third, tell sbt that the nightly is binary compatible with normal releases:
scalaBinaryVersion := "2.12" // or "2.11"
(This last step will become unnecessary once https://github.com/scala/scala-dev/issues/252 gets fixed.)