project/plugins.sbt (4 lines of code) (raw):
addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.3")
addSbtPlugin("com.github.sbt" % "sbt-release" % "1.4.0")
addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.12.2")
addSbtPlugin("ch.epfl.scala" % "sbt-version-policy" % "3.2.1")