fix: require bash script plugin when packaging (#29)

Author: pvlugter

src/main/scala-sbt-0.13/com/lightbend/sbt/javaagent/Dependencies.scala

@@ -0,0 +1,10 @@
+/*
+ * Copyright © 2016-2023 Lightbend, Inc. <http://www.lightbend.com>
+ */
+
+package com.lightbend.sbt.javaagent
+
+object Dependencies {
+  // no bash script plugin dependency for sbt 0.13
+  val BashStartScriptPlugin = "sbt.plugins.JvmPlugin"
+}

src/main/scala-sbt-1.0/com/lightbend/sbt/javaagent/Dependencies.scala

@@ -0,0 +1,9 @@
+/*
+ * Copyright © 2016-2023 Lightbend, Inc. <http://www.lightbend.com>
+ */
+
+package com.lightbend.sbt.javaagent
+
+object Dependencies {
+  val BashStartScriptPlugin = "com.typesafe.sbt.packager.archetypes.scripts.BashStartScriptPlugin"
+}

src/main/scala/com/lightbend/sbt/javaagent/JavaAgentPackaging.scala

@@ -17,7 +17,9 @@ object JavaAgentPackaging extends AutoPlugin {
 
   override def trigger = allRequirements
 
-  override def requires = JavaAgent && PluginRef("com.typesafe.sbt.packager.archetypes.JavaAppPackaging")
+  override def requires = JavaAgent &&
+    PluginRef("com.typesafe.sbt.packager.archetypes.JavaAppPackaging") &&
+    PluginRef(Dependencies.BashStartScriptPlugin)
 
   override def projectSettings = {
     import com.typesafe.sbt.packager.{ Keys => PackagerKeys }