Fix tests.

src/main/kotlin/com/beust/kobalt/app/MainModule.kt

@@ -1,6 +1,7 @@
 package com.beust.kobalt.app
 
 import com.beust.kobalt.Args
+import com.beust.kobalt.internal.IncrementalManager
 import com.beust.kobalt.internal.KobaltSettings
 import com.beust.kobalt.internal.PluginInfo
 import com.beust.kobalt.maven.LocalRepo
@@ -32,7 +33,8 @@ public open class MainModule(val args: Args, val settings: KobaltSettings) : Abs
                 PomGenerator.IFactory::class.java,
                 BintrayApi.IFactory::class.java,
                 Pom.IFactory::class.java,
-                BuildFileCompiler.IFactory::class.java)
+                BuildFileCompiler.IFactory::class.java,
+                IncrementalManager.IFactory::class.java)
             .forEach {
                 install(builder.build(it))
             }

src/main/kotlin/com/beust/kobalt/plugin/packaging/PackagingPlugin.kt

@@ -20,7 +20,7 @@ import javax.inject.Singleton
 
 @Singleton
 class PackagingPlugin @Inject constructor(val dependencyManager : DependencyManager,
-        val incrementalManager: IncrementalManager,
+        val incrementalManagerFactory: IncrementalManager.IFactory,
         val executors: KobaltExecutors, val jarGenerator: JarGenerator, val warGenerator: WarGenerator,
         val zipGenerator: ZipGenerator, val taskContributor: TaskContributor,
         val pomFactory: PomGenerator.IFactory, val configActor: ConfigActor<InstallConfig>)
@@ -84,8 +84,8 @@ class PackagingPlugin @Inject constructor(val dependencyManager : DependencyMana
         // Incremental assembly contributors
         context.pluginInfo.incrementalAssemblyContributors.forEach {
             val taskInfo = it.assemble(project, context)
-            val closure = incrementalManager.toIncrementalTaskClosure(TASK_ASSEMBLE, { p: Project -> taskInfo },
-                    context.variant)
+            val closure = incrementalManagerFactory.create().toIncrementalTaskClosure(TASK_ASSEMBLE, {
+                p: Project -> taskInfo }, context.variant)
             val thisResult = closure.invoke(project)
             if (! thisResult.success) {
                 // Abort at the first failure

src/test/kotlin/com/beust/kobalt/internal/IncrementalManagerTest.kt

@@ -13,7 +13,7 @@ class IncrementalManagerTest {
     fun shouldSave() {
         val file = File.createTempFile("kobalt-", "")
         println("File: $file")
-        val im = IncrementalManager(Args())//, file.absolutePath)
+        val im = IncrementalManager(Args(), file.absolutePath)
         val v = im.inputChecksumFor(TASK)
         Assert.assertNull(v)
         im.saveInputChecksum(TASK, "44")