only compile and only produce jars if there are actually files.

This seem desirable, but also fixes a test failure for which I have no idea why it didn't fail before but now.

1 files changed, 10 insertions, 10 deletions

diff --git a/stage2/PackageBuild.scala b/stage2/PackageBuild.scala
index 8f6d185..79e54a7 100644
--- a/stage2/PackageBuild.scala
+++ b/stage2/PackageBuild.scala
@@ -4,23 +4,23 @@ import scala.collection.immutable.Seq
 abstract class PackageBuild(context: Context) extends BasicBuild(context) with ArtifactInfo{
   def `package`: Seq[File] = lib.concurrently( enableConcurrency )(
     Seq(() => jar, () => docJar, () => srcJar)
-  )( _() )
+  )( _() ).flatten
 
-  private object cacheJarBasicBuild extends Cache[File]
-  def jar: File = cacheJarBasicBuild{
-    lib.jar( artifactId, version, compile, jarTarget )
+  private object cacheJarBasicBuild extends Cache[Option[File]]
+  def jar: Option[File] = cacheJarBasicBuild{
+    compile.flatMap( lib.jar( artifactId, version, _, jarTarget ) )
   }
 
-  private object cacheSrcJarBasicBuild extends Cache[File]
-  def srcJar: File = cacheSrcJarBasicBuild{
+  private object cacheSrcJarBasicBuild extends Cache[Option[File]]
+  def srcJar: Option[File] = cacheSrcJarBasicBuild{
     lib.srcJar( sourceFiles, artifactId, version, scalaTarget )
   }
 
-  private object cacheDocBasicBuild extends Cache[File]
-  def docJar: File = cacheDocBasicBuild{
+  private object cacheDocBasicBuild extends Cache[Option[File]]
+  def docJar: Option[File] = cacheDocBasicBuild{
     lib.docJar( scalaVersion, sourceFiles, dependencyClasspath, apiTarget, jarTarget, artifactId, version, scalacOptions, context.classLoaderCache )
   }
 
-  override def jars = jar +: dependencyJars
-  override def exportedJars: Seq[File] = Seq(jar)
+  override def jars = jar.toVector ++ dependencyJars
+  override def exportedJars: Seq[File] = jar.toVector
 }