From be3ff51f0a32ba5e56e01e6dbd53beff281b8eda Mon Sep 17 00:00:00 2001
From: Antonio Cunei <antonio.cunei@typesafe.com>
Date: Wed, 30 Apr 2014 14:35:04 +0200
Subject: [PATCH] Do not attempt to publish if no artifacts are present

Ivy transactional publishing will abort if no artifacts
are published, either because the temporary directory is
not being created, or because Ivy will detect an anomalous
condition.

Therefore, skip publishing altogether if there is
nothing to publish to begin with.
---
 ivy/src/main/scala/sbt/IvyActions.scala | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/ivy/src/main/scala/sbt/IvyActions.scala b/ivy/src/main/scala/sbt/IvyActions.scala
index 0ad3376d3..716579e0f 100644
--- a/ivy/src/main/scala/sbt/IvyActions.scala
+++ b/ivy/src/main/scala/sbt/IvyActions.scala
@@ -255,16 +255,18 @@ object IvyActions
 
 	def publish(module: ModuleDescriptor, artifacts: Seq[(IArtifact, File)], resolver: DependencyResolver, overwrite: Boolean): Unit =
 	{
-		checkFilesPresent(artifacts)
-		try {
-			resolver.beginPublishTransaction(module.getModuleRevisionId(), overwrite);
-			for( (artifact, file) <- artifacts)
-				resolver.publish(artifact, file, overwrite)
-			resolver.commitPublishTransaction()
-		} catch {
-			case e: Throwable =>
-				try { resolver.abortPublishTransaction() }
-				finally { throw e }
+		if (artifacts.nonEmpty) {
+			checkFilesPresent(artifacts)
+			try {
+				resolver.beginPublishTransaction(module.getModuleRevisionId(), overwrite);
+				for( (artifact, file) <- artifacts)
+					resolver.publish(artifact, file, overwrite)
+				resolver.commitPublishTransaction()
+			} catch {
+				case e: Throwable =>
+					try { resolver.abortPublishTransaction() }
+					finally { throw e }
+			}
 		}
 	}
 	private[this] def checkFilesPresent(artifacts: Seq[(IArtifact, File)])