Avoid publishing microbenchmarks and integration tests artifacts

framework/build.sbt

@@ -34,7 +34,7 @@ lazy val RoutesCompilerProject = PlayDevelopmentProject("Routes-Compiler", "rout
       //
       // See also:
       // 1. the root project at build.sbt file.
-      // 2. project/BuildSettings.scala 
+      // 2. project/BuildSettings.scala
       crossScalaVersions := Seq(scala211, scala212),
       TwirlKeys.templateFormats := Map("twirl" -> "play.routes.compiler.ScalaFormat")
     )
@@ -249,9 +249,10 @@ lazy val PlayFiltersHelpersProject = PlayCrossBuiltProject("Filters-Helpers", "p
     ).dependsOn(PlayProject, PlayTestProject % "test",
         PlayJavaProject % "test", PlaySpecs2Project % "test", PlayAhcWsProject % "test")
 
-// This project is just for testing Play, not really a public artifact
 lazy val PlayIntegrationTestProject = PlayCrossBuiltProject("Play-Integration-Test", "play-integration-test")
     .enablePlugins(JavaAgent)
+    // This project is just for testing Play, not really a public artifact
+    .settings(disablePublishing)
     .settings(
       libraryDependencies += okHttp % Test,
       parallelExecution in Test := false,
@@ -274,10 +275,11 @@ lazy val PlayIntegrationTestProject = PlayCrossBuiltProject("Play-Integration-Te
     .dependsOn(PlayAkkaHttp2SupportProject)
     .dependsOn(PlayNettyServerProject)
 
-// This project is just for microbenchmarking Play. Not published.
 // NOTE: this project depends on JMH, which is GPLv2.
 lazy val PlayMicrobenchmarkProject = PlayCrossBuiltProject("Play-Microbenchmark", "play-microbenchmark")
     .enablePlugins(JmhPlugin, JavaAgent)
+    // This project is just for microbenchmarking Play. Not published.
+    .settings(disablePublishing)
     .settings(
       // Change settings so that IntelliJ can handle dependencies
       // from JMH to the integration tests. We can't use "compile->test"
@@ -366,7 +368,13 @@ lazy val PlayDocsSbtPlugin = PlaySbtPluginProject("Play-Docs-SBT-Plugin", "play-
       libraryDependencies ++= playDocsSbtPluginDependencies
     ).dependsOn(SbtPluginProject)
 
-lazy val publishedProjects = Seq[ProjectReference](
+// These projects are aggregate by the root project and every
+// task (compile, test, publish, etc) executed for the root
+// project will also be executed for them:
+// https://www.scala-sbt.org/1.x/docs/Multi-Project.html#Aggregation
+//
+// Keep in mind that specific configurations (like skip in publish) will be respected.
+lazy val aggregatedProjects = Seq[ProjectReference](
   PlayProject,
   PlayGuiceProject,
   BuildLinkProject,
@@ -387,6 +395,7 @@ lazy val publishedProjects = Seq[ProjectReference](
   PlayJavaJdbcProject,
   PlayJpaProject,
   PlayNettyServerProject,
+  PlayMicrobenchmarkProject,
   PlayServerProject,
   PlayLogback,
   PlayWsProject,
@@ -417,7 +426,7 @@ lazy val PlayFramework = Project("Play-Framework", file("."))
       // we decide that we could release to M5, than we can re-add scala213 to it
       //
       // See also:
-      // 1. project/BuildSettings.scala 
+      // 1. project/BuildSettings.scala
       // 2. RoutesCompilerProject project
       crossScalaVersions := Seq(scala211, scala212),
       playBuildRepoName in ThisBuild := "playframework",
@@ -428,4 +437,4 @@ lazy val PlayFramework = Project("Play-Framework", file("."))
       mimaReportBinaryIssues := (),
       commands += Commands.quickPublish
     ).settings(Release.settings: _*)
-    .aggregate(publishedProjects: _*)
+    .aggregate(aggregatedProjects: _*)

framework/project/BuildSettings.scala

@@ -1,21 +1,23 @@
 /*
  * Copyright (C) 2009-2018 Lightbend Inc. <https://www.lightbend.com>
  */
-import sbt.ScriptedPlugin._
-import sbt._
-import Keys.{version, _}
+import java.util.regex.Pattern
+
+import bintray.BintrayPlugin.autoImport._
+import com.typesafe.sbt.SbtScalariform.autoImport._
+import com.typesafe.sbt.pgp.PgpKeys
 import com.typesafe.tools.mima.core.{ProblemFilters, _}
 import com.typesafe.tools.mima.plugin.MimaKeys._
 import com.typesafe.tools.mima.plugin.MimaPlugin._
 import de.heikoseeberger.sbtheader.AutomateHeaderPlugin
 import de.heikoseeberger.sbtheader.HeaderPlugin.autoImport._
-import scalariform.formatter.preferences._
-import com.typesafe.sbt.SbtScalariform.autoImport._
-import bintray.BintrayPlugin.autoImport._
-import interplay._
 import interplay.Omnidoc.autoImport._
 import interplay.PlayBuildBase.autoImport._
-import java.util.regex.Pattern
+import interplay._
+import sbt.Keys.{version, _}
+import sbt.ScriptedPlugin._
+import sbt.{Resolver, _}
+import scalariform.formatter.preferences._
 
 import scala.util.control.NonFatal
 
@@ -838,6 +840,18 @@ object BuildSettings {
     ScriptedPlugin.scriptedLaunchOpts += s"-Dproject.version=${version.value}"
   ) ++ playScriptedSettings
 
+  def disablePublishing = Seq[Setting[_]](
+    // This setting will work for sbt 1, but not 0.13. For 0.13 it only affects
+    // `compile` and `update` tasks.
+    skip in publish := true,
+
+    // For sbt 0.13 this is what we need to avoid publishing. These settings can
+    // be removed when we move to sbt 1.
+    PgpKeys.publishSigned := {},
+    publish := {},
+    publishLocal := {}
+  )
+
   /**
    * A project that runs in the SBT runtime
    */