Add coverageScalacPluginVersion setting key

src/main/scala/scoverage/ScoverageKeys.scala

@@ -17,4 +17,5 @@ object ScoverageKeys {
   lazy val coverageOutputDebug = settingKey[Boolean]("turn on the debug report")
   lazy val coverageCleanSubprojectFiles = settingKey[Boolean]("removes subproject data after an aggregation")
   lazy val coverageOutputTeamCity = settingKey[Boolean]("turn on teamcity reporting")
+  lazy val coverageScalacPluginVersion = settingKey[String]("version of scalac-scoverage-plugin to use")
 }

src/main/scala/scoverage/ScoverageSbtPlugin.scala

@@ -30,10 +30,11 @@ object ScoverageSbtPlugin extends AutoPlugin {
     coverageReport <<= coverageReport0,
     coverageAggregate <<= coverageAggregate0,
     ivyConfigurations := ivyConfigurations.value :+ ScoveragePluginConfig,
+    coverageScalacPluginVersion := DefaultScoverageVersion,
     libraryDependencies ++= {
       if (coverageEnabled.value) Seq(
-        OrgScoverage % (ScalacRuntimeArtifact + "_" + scalaBinaryVersion.value) % DefaultScoverageVersion,
-        OrgScoverage % (ScalacPluginArtifact + "_" + scalaBinaryVersion.value) % DefaultScoverageVersion % "scoveragePlugin->default(compile)"
+        OrgScoverage % (ScalacRuntimeArtifact + "_" + scalaBinaryVersion.value) % coverageScalacPluginVersion.value,
+        OrgScoverage % (ScalacPluginArtifact + "_" + scalaBinaryVersion.value) % coverageScalacPluginVersion.value % "scoveragePlugin->default(compile)"
       ) else Nil
     },
     scalacOptions in(Compile, compile) ++= scoverageScalacOptions.value,

src/sbt-test/scoverage/scalac-plugin-version/build.sbt

@@ -0,0 +1,11 @@
+lazy val root = (project in file(".")).settings(
+  coverageEnabled := true,
+  coverageScalacPluginVersion := "1.1.0"
+)
+TaskKey[Unit]("check") := {
+  assert(
+    libraryDependencies.value
+      .filter(module =>
+        module.organization == "org.scoverage" && module.revision == "1.1.0")
+      .size == 2)
+}

src/sbt-test/scoverage/scalac-plugin-version/project/plugins.sbt

@@ -0,0 +1,15 @@
+// The Typesafe repository
+resolvers += "Typesafe repository" at "http://repo.typesafe.com/typesafe/releases/"
+
+//scoverage needs this
+resolvers += Classpaths.sbtPluginReleases
+
+{
+  val pluginVersion = System.getProperty("plugin.version")
+  if(pluginVersion == null)
+    throw new RuntimeException("""|The system property 'plugin.version' is not defined.
+                                 |Specify this property using the scriptedLaunchOpts -D.""".stripMargin)
+  else addSbtPlugin("org.scoverage" %% "sbt-scoverage" % pluginVersion)
+}
+
+

src/sbt-test/scoverage/scalac-plugin-version/test

@@ -0,0 +1,2 @@
+# assert coverageScalacPluginVersion is taken into account when generating libraryDependencies
+> check