I want to write a plugin using scala 2.11
sbtPlugin := true
scalaVersion := \"2.11.0\"
The current sbt release (0.13.9) is built on scala
sbt now uses Scala 2.12
The current version of sbt is 1.2.8 (released 30th December 2018) and it supports Scala 2.12 since 1.0.0 (released 10th August 2017)
sbt 1.0 uses Scala 2.12 for build definitions and plugins. This also requires JDK 8.
https://www.scala-sbt.org/1.x/docs/sbt-1.0-Release-Notes.html#sbt+1.0.0
We simply skipped Scala 2.11 and went directly to 2.12.