Include travis build number in sonatype repository description

Author: lrytz

src/main/scala/ScalaModulePlugin.scala

@@ -41,11 +41,14 @@ object ScalaModulePlugin extends AutoPlugin {
     sonatypeProfileName := "org.scala-lang",
 
     // The staging repository name. The default is `[sbt-sonatype] name version`. We include the
-    // Scala/Scala.js/Scala Native versions to avoid conflicts when running the travis jobs.
+    // Scala/Scala.js/Scala Native versions and the travis job number to avoid conflicts when
+    // running the travis jobs. Example: collection-compat has a two 2.12.x jobs, one for the
+    // compat library, one for the migration rules, and both were writing to the same staging repo.
     sonatypeSessionName := {
-      val sjs = Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).map(v => s" Scala.js $v").getOrElse("")
-      val native = Option(System.getenv("SCALANATIVE_VERSION")).filter(_.nonEmpty).map(v => s" Scala Native $v").getOrElse("")
-      s"${sonatypeSessionName.value} Scala ${scalaVersion.value}$sjs$native"
+      val sjs = Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).map(v => s" (js $v)").getOrElse("")
+      val native = Option(System.getenv("SCALANATIVE_VERSION")).filter(_.nonEmpty).map(v => s" (native $v)").getOrElse("")
+      val jobNr = Option(System.getenv("TRAVIS_JOB_NUMBER")).filter(_.nonEmpty).map(v => s" (travis #$v)").getOrElse("")
+      s"${sonatypeSessionName.value} Scala ${scalaVersion.value}$sjs$native$jobNr"
     },
   )