Export the split packages and create correct import versions for OSGi

Author: szeiger

build.sbt

@@ -19,9 +19,27 @@ val disablePublishing = Seq[Setting[_]](
 
 disablePublishing  // in root
 
+/** Create an OSGi version range for standard Scala / Lightbend versioning
+  * schemes that describes binary compatible versions. */
+def osgiVersionRange(version: String): String =
+  if(version contains '-') "${@}" // M, RC or SNAPSHOT -> exact version
+  else "${range;[==,=+)}" // Any binary compatible version
+
+/** Create an OSGi Import-Package version specification. */
+def osgiImport(pattern: String, version: String): String =
+  pattern + ";version=\"" + osgiVersionRange(version) + "\""
+
 lazy val core = project.in(file("core")).settings(scalaModuleSettings).settings(scalaModuleOsgiSettings).settings(
   name := "scala-parallel-collections",
-  OsgiKeys.exportPackage := Seq(s"scala.collection.parallel.*;version=${version.value}"),
+  OsgiKeys.exportPackage := Seq(
+    s"scala.collection.parallel.*;version=${version.value}",
+    // The first entry on the classpath is the project's target classes dir but sbt-osgi also passes all
+    // dependencies to bnd. Any "merge" strategy for split packages would include the classes from scala-library.
+    s"scala.collection;version=${version.value};-split-package:=first",
+    s"scala.collection.generic;version=${version.value};-split-package:=first"
+  ),
+  // Use correct version for scala package imports
+  OsgiKeys.importPackage := Seq(osgiImport("scala*", scalaVersion.value), "*"),
   mimaPreviousVersion := None,
   headers := Map(
     "scala" ->