Remove Scala 2.11 from crossScalaVersions (#26656)

* Remove Scala 2.11 from crossScalaVersions

* because +buildRelease doesn't work with mixed crossScalaVersions
* let's use akka.build.scalaVersion when building for 2.11
* aggregatedProjects adjusted depending on akka.build.scalaVersion is 2.11 or not,
  there excluding/including the -typed modules

* update travis to use akka.build.scalaVersion

.travis.yml

@@ -30,7 +30,7 @@ cache:
 script:
   - jabba use "adopt@~1.8.202-08"
   # need to override as the default is to test
-  - sbt -jvm-opts .jvmopts-travis ";++$TRAVIS_SCALA_VERSION update ;++$TRAVIS_SCALA_VERSION mimaReportBinaryIssues ;++$TRAVIS_SCALA_VERSION test:compile ;++$TRAVIS_SCALA_VERSION validateCompile"
+  - sbt -jvm-opts .jvmopts-travis -Dakka.build.scalaVersion=$TRAVIS_SCALA_VERSION ";update ;mimaReportBinaryIssues ;test:compile ;validateCompile"
   # make 'git branch' work again
   - git branch -f "$TRAVIS_BRANCH" && git checkout "$TRAVIS_BRANCH"
   # check policies, if on master also upload

build.sbt

@@ -22,12 +22,14 @@ initialize := {
   initialize.value
 }
 
-// akka.AkkaBuild.buildSettings
+akka.AkkaBuild.buildSettings
 shellPrompt := { s => Project.extract(s).currentProject.id + " > " }
 resolverSettings
 
+def isScala211: Boolean = System.getProperty("akka.build.scalaVersion", "").startsWith("2.11")
+
 // When this is updated the set of modules in ActorSystem.allModules should also be updated
-lazy val aggregatedProjects: Seq[ProjectReference] = Seq(
+lazy val aggregatedProjects: Seq[ProjectReference] = List[ProjectReference](
   actor, actorTests,
   agent,
   benchJmh,
@@ -35,7 +37,6 @@ lazy val aggregatedProjects: Seq[ProjectReference] = Seq(
   cluster, clusterMetrics, clusterSharding, clusterTools,
   contrib,
   distributedData,
-  docs,
   multiNodeTestkit,
   osgi,
   persistence, persistenceQuery, persistenceShared, persistenceTck,
@@ -44,14 +45,18 @@ lazy val aggregatedProjects: Seq[ProjectReference] = Seq(
   slf4j,
   stream, streamTestkit, streamTests, streamTestsTck,
   testkit,
+  discovery,
+  coordination
+) ++ 
+  (if (isScala211) List.empty[ProjectReference]
+  else List[ProjectReference](
+    docs,
     actorTyped, actorTypedTests, actorTestkitTyped,
     persistenceTyped,
     clusterTyped, clusterShardingTyped,
     benchJmhTyped,
-  streamTyped,
-  discovery,
-  coordination
-)
+    streamTyped
+  ))
 
 lazy val root = Project(
   id = "akka",
@@ -62,8 +67,7 @@ lazy val root = Project(
    (CrossVersion.partialVersion(scalaVersion.value) match {
      case Some((2, n)) if n == 11 => aggregatedProjects // ignore all, don't unidoc when scalaVersion is 2.11
      case _                       => Seq(remoteTests, benchJmh, benchJmhTyped, protobuf, akkaScalaNightly, docs)
-   }),
-   crossScalaVersions := Nil, // Allows some modules (typed) to be only for 2.12 sbt/sbt#3465
+   })
  )
  .settings(
    unmanagedSources in(Compile, headerCreate) := (baseDirectory.value / "project").**("*.scala").get
@@ -124,7 +128,6 @@ lazy val benchJmhTyped = akkaModule("akka-bench-jmh-typed")
     ).map(_ % "compile->compile;compile->test"): _*
   )
   .settings(Dependencies.benchJmh)
-  .settings(AkkaBuild.noScala211)
   .enablePlugins(JmhPlugin, ScaladocNoVerificationOfDiagrams, NoPublish, CopyrightHeader)
   .disablePlugins(MimaPlugin, WhiteSourcePlugin, ValidatePullRequest, CopyrightHeaderInPr)
 
@@ -269,7 +272,6 @@ lazy val docs = akkaModule("akka-docs")
     resolvers += Resolver.jcenterRepo,
     deployRsyncArtifact := List((paradox in Compile).value -> s"www/docs/akka/${version.value}")
   )
-  .settings(AkkaBuild.noScala211)
   .enablePlugins(
     AkkaParadoxPlugin, DeployRsync, NoPublish, ParadoxBrowse,
     ScaladocNoVerificationOfDiagrams,
@@ -418,7 +420,6 @@ lazy val actorTyped = akkaModule("akka-actor-typed")
   .settings(AkkaBuild.mayChangeSettings)
   .settings(AutomaticModuleName.settings("akka.actor.typed")) // fine for now, eventually new module name to become typed.actor
   .settings(OSGi.actorTyped)
-  .settings(AkkaBuild.noScala211)
   .settings(
     initialCommands :=
       """
@@ -442,7 +443,6 @@ lazy val persistenceTyped = akkaModule("akka-persistence-typed")
   )
   .settings(Dependencies.persistenceShared)
   .settings(AkkaBuild.mayChangeSettings)
-  .settings(AkkaBuild.noScala211)
   .settings(AutomaticModuleName.settings("akka.persistence.typed"))
   .settings(OSGi.persistenceTyped)
   .disablePlugins(MimaPlugin)
@@ -461,7 +461,6 @@ lazy val clusterTyped = akkaModule("akka-cluster-typed")
     remoteTests % "test->test"
   )
   .settings(AkkaBuild.mayChangeSettings)
-  .settings(AkkaBuild.noScala211)
   .settings(AutomaticModuleName.settings("akka.cluster.typed"))
   .disablePlugins(MimaPlugin)
   .configs(MultiJvm)
@@ -478,7 +477,6 @@ lazy val clusterShardingTyped = akkaModule("akka-cluster-sharding-typed")
     remoteTests % "test->test"
   )
   .settings(AkkaBuild.mayChangeSettings)
-  .settings(AkkaBuild.noScala211)
   .settings(AutomaticModuleName.settings("akka.cluster.sharding.typed"))
   // To be able to import ContainerFormats.proto
   .settings(Protobuf.importPath := Some(baseDirectory.value / ".." / "akka-remote" / "src" / "main" / "protobuf"))
@@ -495,7 +493,6 @@ lazy val streamTyped = akkaModule("akka-stream-typed")
     actorTypedTests % "test->test"
   )
   .settings(AkkaBuild.mayChangeSettings)
-  .settings(AkkaBuild.noScala211)
   .settings(AutomaticModuleName.settings("akka.stream.typed"))
   .disablePlugins(MimaPlugin)
   .enablePlugins(ScaladocNoVerificationOfDiagrams)
@@ -504,7 +501,6 @@ lazy val actorTestkitTyped = akkaModule("akka-actor-testkit-typed")
   .dependsOn(actorTyped, testkit % "compile->compile;test->test")
   .settings(AutomaticModuleName.settings("akka.actor.testkit.typed"))
   .settings(Dependencies.actorTestkitTyped)
-  .settings(AkkaBuild.noScala211)
   .disablePlugins(MimaPlugin)
 
 lazy val actorTypedTests = akkaModule("akka-actor-typed-tests")
@@ -513,7 +509,6 @@ lazy val actorTypedTests = akkaModule("akka-actor-typed-tests")
     actorTestkitTyped % "compile->compile;test->test"
   )
   .settings(AkkaBuild.mayChangeSettings)
-  .settings(AkkaBuild.noScala211)
   .disablePlugins(MimaPlugin)
   .enablePlugins(NoPublish)
 

project/AkkaBuild.scala

@@ -234,10 +234,6 @@ object AkkaBuild {
     javacOptions in doc ++= Seq("-Xdoclint:none", "--ignore-source-errors"))
 
 
-  lazy val noScala211 = Seq(
-    crossScalaVersions := crossScalaVersions.value.filterNot(_.startsWith("2.11"))
-  )
-
   def loadSystemProperties(fileName: String): Unit = {
     import scala.collection.JavaConverters._
     val file = new File(fileName)

project/Dependencies.scala

@@ -21,11 +21,12 @@ object Dependencies {
   val aeronVersion = "1.15.1"
 
   val Versions = Seq(
-    crossScalaVersions := Seq("2.12.8", "2.11.12", "2.13.0-M5"),
+    crossScalaVersions := Seq("2.12.8", "2.13.0-M5"),
     scalaVersion := System.getProperty("akka.build.scalaVersion", crossScalaVersions.value.head),
     scalaStmVersion := sys.props.get("akka.build.scalaStmVersion").getOrElse("0.9"),
-    scalaCheckVersion := sys.props.get("akka.build.scalaCheckVersion").getOrElse(
-      CrossVersion.partialVersion(scalaVersion.value) match {
+    scalaCheckVersion := sys.props
+        .get("akka.build.scalaCheckVersion")
+        .getOrElse(CrossVersion.partialVersion(scalaVersion.value) match {
           case Some((2, n)) if n >= 12 => "1.14.0" // does not work for 2.11
           case _                       => "1.13.2"
         }),
@@ -41,7 +42,7 @@ object Dependencies {
   object Compile {
     // Compile
 
-    val camelCore = "org.apache.camel" % "camel-core" % "2.17.7" exclude ("org.slf4j", "slf4j-api") // ApacheV2
+    val camelCore = ("org.apache.camel" % "camel-core" % "2.17.7").exclude("org.slf4j", "slf4j-api") // ApacheV2
 
     // when updating config version, update links ActorSystem ScalaDoc to link to the updated version
     val config = "com.typesafe" % "config" % "1.3.3" // ApacheV2
@@ -77,7 +78,6 @@ object Dependencies {
     val aeronDriver = "io.aeron" % "aeron-driver" % aeronVersion // ApacheV2
     val aeronClient = "io.aeron" % "aeron-client" % aeronVersion // ApacheV2
 
-
     object Docs {
       val sprayJson = "io.spray" %% "spray-json" % "1.3.4" % "test"
       val gson = "com.google.code.gson" % "gson" % "2.8.5" % "test"
@@ -128,14 +128,12 @@ object Dependencies {
       val jaxb = "javax.xml.bind" % "jaxb-api" % "2.3.0" % "provided;test"
       val activation = "com.sun.activation" % "javax.activation" % "1.2.0" % "provided;test"
 
-
       val levelDB = "org.iq80.leveldb" % "leveldb" % "0.10" % "optional;provided" // ApacheV2
       val levelDBmultiJVM = "org.iq80.leveldb" % "leveldb" % "0.10" % "optional;provided;multi-jvm" // ApacheV2
       val levelDBNative = "org.fusesource.leveldbjni" % "leveldbjni-all" % "1.8" % "optional;provided" // New BSD
 
       val junit = Compile.junit % "optional;provided;test"
 
-
       val scalatest = Def.setting { "org.scalatest" %% "scalatest" % scalaTestVersion.value % "optional;provided;test" } // ApacheV2
 
     }
@@ -155,9 +153,15 @@ object Dependencies {
   val testkit = l ++= Seq(Test.junit, Test.scalatest.value) ++ Test.metricsAll
 
   val actorTests = l ++= Seq(
-    Test.junit, Test.scalatest.value, Test.commonsCodec, Test.commonsMath,
-    Test.mockito, Test.scalacheck.value, Test.jimfs,
-    Test.dockerClient, Provided.activation // dockerClient needs javax.activation.DataSource in JDK 11+
+        Test.junit,
+        Test.scalatest.value,
+        Test.commonsCodec,
+        Test.commonsMath,
+        Test.mockito,
+        Test.scalacheck.value,
+        Test.jimfs,
+        Test.dockerClient,
+        Provided.activation // dockerClient needs javax.activation.DataSource in JDK 11+
       )
 
   val actorTestkitTyped = l ++= Seq(Provided.junit, Provided.scalatest.value)
@@ -170,7 +174,12 @@ object Dependencies {
 
   val clusterTools = l ++= Seq(Test.junit, Test.scalatest.value)
 
-  val clusterSharding = l ++= Seq(Provided.levelDBmultiJVM, Provided.levelDBNative, Test.junit, Test.scalatest.value, Test.commonsIo)
+  val clusterSharding = l ++= Seq(
+        Provided.levelDBmultiJVM,
+        Provided.levelDBNative,
+        Test.junit,
+        Test.scalatest.value,
+        Test.commonsIo)
 
   val clusterMetrics = l ++= Seq(Provided.sigarLoader, Test.slf4jJul, Test.slf4jLog4j, Test.logback, Test.mockito)
 
@@ -180,17 +189,49 @@ object Dependencies {
 
   val agent = l ++= Seq(scalaStm.value, Test.scalatest.value, Test.junit)
 
-  val persistence = l ++= Seq(Provided.levelDB, Provided.levelDBNative, Test.scalatest.value, Test.junit, Test.commonsIo, Test.commonsCodec, Test.scalaXml)
+  val persistence = l ++= Seq(
+        Provided.levelDB,
+        Provided.levelDBNative,
+        Test.scalatest.value,
+        Test.junit,
+        Test.commonsIo,
+        Test.commonsCodec,
+        Test.scalaXml)
 
-  val persistenceQuery = l ++= Seq(Test.scalatest.value, Test.junit, Test.commonsIo, Provided.levelDB, Provided.levelDBNative)
+  val persistenceQuery = l ++= Seq(
+        Test.scalatest.value,
+        Test.junit,
+        Test.commonsIo,
+        Provided.levelDB,
+        Provided.levelDBNative)
 
-  val persistenceTck = l ++= Seq(Test.scalatest.value.withConfigurations(Some("compile")), Test.junit.withConfigurations(Some("compile")), Provided.levelDB, Provided.levelDBNative)
+  val persistenceTck = l ++= Seq(
+        Test.scalatest.value.withConfigurations(Some("compile")),
+        Test.junit.withConfigurations(Some("compile")),
+        Provided.levelDB,
+        Provided.levelDBNative)
 
   val persistenceShared = l ++= Seq(Provided.levelDB, Provided.levelDBNative)
 
-  val camel = l ++= Seq(camelCore, Provided.jaxb, Provided.activation, Test.scalatest.value, Test.junit, Test.mockito, Test.logback, Test.commonsIo)
+  val camel = l ++= Seq(
+        camelCore,
+        Provided.jaxb,
+        Provided.activation,
+        Test.scalatest.value,
+        Test.junit,
+        Test.mockito,
+        Test.logback,
+        Test.commonsIo)
 
-  val osgi = l ++= Seq(osgiCore, osgiCompendium, Test.logback, Test.commonsIo, Test.pojosr, Test.tinybundles, Test.scalatest.value, Test.junit)
+  val osgi = l ++= Seq(
+        osgiCore,
+        osgiCompendium,
+        Test.logback,
+        Test.commonsIo,
+        Test.pojosr,
+        Test.tinybundles,
+        Test.scalatest.value,
+        Test.junit)
 
   val docs = l ++= Seq(Test.scalatest.value, Test.junit, Docs.sprayJson, Docs.gson, Provided.levelDB)
 
@@ -200,10 +241,7 @@ object Dependencies {
 
   // akka stream
 
-  lazy val stream = l ++= Seq[sbt.ModuleID](
-    reactiveStreams,
-    sslConfigCore,
-    Test.scalatest.value)
+  lazy val stream = l ++= Seq[sbt.ModuleID](reactiveStreams, sslConfigCore, Test.scalatest.value)
 
   lazy val streamTestkit = l ++= Seq(Test.scalatest.value, Test.scalacheck.value, Test.junit)
 

project/scripts/release

@@ -299,6 +299,7 @@ else
   RELEASE_OPT="-Dakka.genjavadoc.enabled=true"
 fi
 try sbt $RELEASE_OPT +buildRelease
+try sbt -Dakka.build.scalaVersion=2.11.12 -D$RELEASE_OPT buildRelease
 try sbt $RELEASE_OPT buildDocs
 echolog "Successfully created local release"