scalaVersion not taken into account

[daenenk]

I created two projects, each with a different scalaVersion.
In eclipse, both are seen as 2.10.6,
which gives problems when adding dependencies.

build.sbt

lazy val xproject = project.
  settings(
     scalaVersion := "2.10.6"
  )

lazy val yproject = project.
  settings(
     scalaVersion := "2.11.8"
  )

Test with

• Scala-IDE 4.6.0-vfinal-2017-05-16T08:49:17Z-Typesafe
• Scala-IDE 4.5.0-vfinal-2016-12-13T10:59:29Z-Typesafe

on OS X 10.11.6

sbt 0.13.15
sbteclipse 5.1.0