From 5e8bbf8d0d80090bfefc64e2c844ae9643dced61 Mon Sep 17 00:00:00 2001
From: Eugene Yokota <eed3si9n@gmail.com>
Date: Thu, 27 Jul 2017 22:02:37 -0400
Subject: [PATCH] implement `skip in publish`

`skip in publish` when set to `true` will skip publish, publishLocal, and publishM2. (sbt-pgp already skips publishSigned).

Fixes sbt/sbt#3136
---
 main/src/main/scala/sbt/Defaults.scala | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/main/src/main/scala/sbt/Defaults.scala b/main/src/main/scala/sbt/Defaults.scala
index e88f2a811..bef9c27dc 100755
--- a/main/src/main/scala/sbt/Defaults.scala
+++ b/main/src/main/scala/sbt/Defaults.scala
@@ -2159,16 +2159,26 @@ object Classpaths {
         classifiers.toVector
       )
     }
+
   def deliverTask(config: TaskKey[PublishConfiguration]): Initialize[Task[File]] =
     Def.task {
       val _ = update.value
       IvyActions.deliver(ivyModule.value, config.value, streams.value.log)
     }
+
   def publishTask(config: TaskKey[PublishConfiguration],
                   deliverKey: TaskKey[_]): Initialize[Task[Unit]] =
-    Def.task {
-      IvyActions.publish(ivyModule.value, config.value, streams.value.log)
+    Def.taskDyn {
+      val s = streams.value
+      val skp = (skip in publish).value
+      val ref = thisProjectRef.value
+      if (skp) Def.task { s.log.debug(s"Skipping publish* for ${ref.project}") }
+      else Def.task {
+        val cfg = config.value
+        IvyActions.publish(ivyModule.value, config.value, s.log)
+      }
     } tag (Tags.Publish, Tags.Network)
+
   val moduleIdJsonKeyFormat: sjsonnew.JsonKeyFormat[ModuleID] =
     new sjsonnew.JsonKeyFormat[ModuleID] {
       import sjsonnew.support.scalajson.unsafe._