From 27857f48ab0735c1843b796ad509849e452360a5 Mon Sep 17 00:00:00 2001
From: Cedric Beust <cedric@beust.com>
Date: Wed, 14 Oct 2015 00:03:55 -0700
Subject: [PATCH] Removing KobaltLogger.

---
 build.gradle                                  |  3 -
 kobalt.iml                                    |  4 --
 kobalt/src/Build.kt                           | 21 +++----
 kobaltw                                       |  2 +-
 src/main/kotlin/com/beust/kobalt/Args.kt      |  3 +
 src/main/kotlin/com/beust/kobalt/FileSpec.kt  |  5 +-
 src/main/kotlin/com/beust/kobalt/Jvm.kt       |  7 +--
 src/main/kotlin/com/beust/kobalt/Main.kt      |  6 +-
 src/main/kotlin/com/beust/kobalt/Plugins.kt   |  4 +-
 .../com/beust/kobalt/ProjectGenerator.kt      |  4 +-
 .../com/beust/kobalt/internal/DynamicGraph.kt | 20 +++---
 .../beust/kobalt/internal/GenericRunner.kt    |  5 +-
 .../com/beust/kobalt/internal/JUnitRunner.kt  |  5 --
 .../kobalt/internal/JvmCompilerPlugin.kt      |  4 +-
 .../com/beust/kobalt/internal/TaskManager.kt  |  6 +-
 .../com/beust/kobalt/internal/TestNgRunner.kt |  4 --
 .../beust/kobalt/kotlin/ScriptCompiler2.kt    |  4 +-
 .../com/beust/kobalt/maven/ArtifactFetcher.kt |  5 +-
 .../com/beust/kobalt/maven/DepFactory.kt      |  8 +--
 .../kotlin/com/beust/kobalt/maven/Http.kt     |  4 +-
 .../com/beust/kobalt/maven/LocalRepo.kt       |  5 +-
 .../com/beust/kobalt/maven/MavenDependency.kt |  2 +-
 src/main/kotlin/com/beust/kobalt/maven/Pom.kt |  6 +-
 .../com/beust/kobalt/maven/PomGenerator.kt    |  6 +-
 .../com/beust/kobalt/maven/RepoFinder.kt      |  5 +-
 .../com/beust/kobalt/misc/CheckVersions.kt    |  2 +-
 .../kotlin/com/beust/kobalt/misc/GithubApi.kt |  2 +-
 .../kotlin/com/beust/kobalt/misc/KFiles.kt    | 14 ++---
 .../com/beust/kobalt/misc/KobaltExecutors.kt  | 10 +--
 .../com/beust/kobalt/misc/KobaltLogger.kt     | 63 +++++++++++++++----
 .../kotlin/com/beust/kobalt/misc/Versions.kt  |  2 +-
 .../com/beust/kobalt/plugin/DefaultPlugin.kt  |  9 +--
 .../com/beust/kobalt/plugin/apt/AptPlugin.kt  |  5 +-
 .../beust/kobalt/plugin/java/JavaPlugin.kt    |  4 +-
 .../kobalt/plugin/kotlin/KotlinCompiler.kt    |  5 +-
 .../kobalt/plugin/kotlin/KotlinPlugin.kt      |  9 +--
 .../beust/kobalt/plugin/packaging/JarUtils.kt |  8 +--
 .../plugin/packaging/PackagingPlugin.kt       | 11 +---
 .../beust/kobalt/plugin/publish/JCenterApi.kt |  6 +-
 .../kobalt/plugin/publish/PublishPlugin.kt    |  7 +--
 .../com/beust/kobalt/wrapper/Wrapper.kt       |  5 +-
 41 files changed, 140 insertions(+), 170 deletions(-)

diff --git a/build.gradle b/build.gradle
index 697ac6ff..d2a5a212 100644
--- a/build.gradle
+++ b/build.gradle
@@ -43,9 +43,6 @@ dependencies {
             'com.beust:jcommander:1.48',
             'com.beust:klaxon:0.16',
             'com.squareup.okhttp:okhttp:2.4.0',
-            'org.slf4j:slf4j-api:1.7.12',
-            'org.slf4j:slf4j-simple:1.7.12',
-            'ch.qos.logback:logback-classic:1.1.2',
             'org.jsoup:jsoup:1.8.2',
             'com.google.inject:guice:4.0',
             'com.google.inject.extensions:guice-assistedinject:4.0',
diff --git a/kobalt.iml b/kobalt.iml
index 8198e072..99f9efd0 100644
--- a/kobalt.iml
+++ b/kobalt.iml
@@ -22,9 +22,6 @@
     <orderEntry type="library" name="Gradle: com.google.guava:guava:18.0" level="project" />
     <orderEntry type="library" name="Gradle: com.beust:klaxon:0.16" level="project" />
     <orderEntry type="library" name="Gradle: com.squareup.okhttp:okhttp:2.4.0" level="project" />
-    <orderEntry type="library" name="Gradle: org.slf4j:slf4j-api:1.7.12" level="project" />
-    <orderEntry type="library" name="Gradle: org.slf4j:slf4j-simple:1.7.12" level="project" />
-    <orderEntry type="library" name="Gradle: ch.qos.logback:logback-classic:1.1.2" level="project" />
     <orderEntry type="library" name="Gradle: org.jsoup:jsoup:1.8.2" level="project" />
     <orderEntry type="library" name="Gradle: com.google.inject:guice:4.0" level="project" />
     <orderEntry type="library" name="Gradle: com.google.inject.extensions:guice-assistedinject:4.0" level="project" />
@@ -32,7 +29,6 @@
     <orderEntry type="library" name="Gradle: com.github.spullara.mustache.java:compiler:0.8.18" level="project" />
     <orderEntry type="library" name="Gradle: org.jetbrains.kotlin:kotlin-runtime:0.14.449" level="project" />
     <orderEntry type="library" name="Gradle: com.squareup.okio:okio:1.4.0" level="project" />
-    <orderEntry type="library" name="Gradle: ch.qos.logback:logback-core:1.1.2" level="project" />
     <orderEntry type="library" name="Gradle: javax.inject:javax.inject:1" level="project" />
     <orderEntry type="library" name="Gradle: aopalliance:aopalliance:1.0" level="project" />
     <orderEntry type="library" name="Gradle: org.codehaus.plexus:plexus-utils:3.0.20" level="project" />
diff --git a/kobalt/src/Build.kt b/kobalt/src/Build.kt
index 4c328f4e..89c65172 100644
--- a/kobalt/src/Build.kt
+++ b/kobalt/src/Build.kt
@@ -6,16 +6,13 @@ import com.beust.kobalt.plugin.packaging.assemble
 import com.beust.kobalt.plugin.kotlin.kotlinCompiler
 import com.beust.kobalt.plugin.publish.jcenter
 //import com.beust.kobalt.plugin.linecount.lineCount
-//
-////val repos = repos("https://dl.bintray.com/cbeust/maven/")
-//
 //val plugins = plugins(
 //        "com.beust.kobalt:kobalt-line-count:0.15"
 ////        file(homeDir("kotlin/kobalt-line-count/kobaltBuild/libs/kobalt-line-count-0.14.jar"))
 //)
 //
 //val lc = lineCount {
-//    suffix = "**Plugin.kt"
+//    suffix = "**.md"
 //}
 
 fun readVersion() : String {
@@ -43,13 +40,13 @@ val kobalt = kotlinProject(wrapper) {
     group = "com.beust"
     artifactId = name
     version = readVersion()
-    description = "A build system in Kotlin"
-    url = "http://beust.com/kobalt"
-    licenses = listOf(com.beust.kobalt.api.License("Apache 2.0", "http://www.apache.org/licenses/LICENSE-2.0"))
-    scm = com.beust.kobalt.api.Scm(
-            url = "http://github.com/cbeust/kobalt",
-            connection = "https://github.com/cbeust/kobalt.git",
-            developerConnection = "git@github.com:cbeust/kobalt.git")
+//    description = "A build system in Kotlin"
+//    url = "http://beust.com/kobalt"
+//    licenses = listOf(com.beust.kobalt.api.License("Apache 2.0", "http://www.apache.org/licenses/LICENSE-2.0"))
+//    scm = com.beust.kobalt.api.Scm(
+//            url = "http://github.com/cbeust/kobalt",
+//            connection = "https://github.com/cbeust/kobalt.git",
+//            developerConnection = "git@github.com:cbeust/kobalt.git")
 
     dependenciesTest {
         compile("org.testng:testng:6.9.6")
@@ -64,8 +61,6 @@ val kobalt = kotlinProject(wrapper) {
                 "com.beust:klaxon:0.16",
                 "com.squareup.okhttp:okhttp:2.5.0",
                 "org.slf4j:slf4j-api:1.7.12",
-                "org.slf4j:slf4j-simple:1.7.12",
-                "ch.qos.logback:logback-classic:1.1.3",
                 "org.jsoup:jsoup:1.8.3",
                 "com.google.inject:guice:4.0",
                 "com.google.inject.extensions:guice-assistedinject:4.0",
diff --git a/kobaltw b/kobaltw
index b27b3d89..494cd77f 100755
--- a/kobaltw
+++ b/kobaltw
@@ -1 +1 @@
-java -jar $(dirname $0)/kobalt/wrapper/kobalt-wrapper.jar $*
+java -jar $(dirname $0)/kobalt/wrapper/kobalt-wrapper.jar $*
diff --git a/src/main/kotlin/com/beust/kobalt/Args.kt b/src/main/kotlin/com/beust/kobalt/Args.kt
index cf328612..697aa83a 100644
--- a/src/main/kotlin/com/beust/kobalt/Args.kt
+++ b/src/main/kotlin/com/beust/kobalt/Args.kt
@@ -13,6 +13,9 @@ class Args {
             "dependencies")
     var checkVersions = false
 
+    @Parameter(names = arrayOf("--dev"), description = "Turn of dev mode, resulting in a more verbose log output")
+    var dev: Boolean = false
+
     @Parameter(names = arrayOf("--dryRun"), description = "Display all the tasks that will get run without " +
             "actually running them")
     var dryRun: Boolean = false
diff --git a/src/main/kotlin/com/beust/kobalt/FileSpec.kt b/src/main/kotlin/com/beust/kobalt/FileSpec.kt
index cb23380b..28e4ea00 100644
--- a/src/main/kotlin/com/beust/kobalt/FileSpec.kt
+++ b/src/main/kotlin/com/beust/kobalt/FileSpec.kt
@@ -1,7 +1,6 @@
 package com.beust.kobalt
 
-import com.beust.kobalt.api.Project
-import com.beust.kobalt.misc.KobaltLogger
+import com.beust.kobalt.misc.log
 import java.io.File
 import java.nio.file.*
 import java.nio.file.attribute.BasicFileAttributes
@@ -15,7 +14,7 @@ sealed class IFileSpec {
         override public fun toString() = spec
     }
 
-    class Glob(val spec: String) : IFileSpec(), KobaltLogger {
+    class Glob(val spec: String) : IFileSpec() {
         override public fun toFiles(directory: String): List<File> {
             val result = arrayListOf<File>()
 
diff --git a/src/main/kotlin/com/beust/kobalt/Jvm.kt b/src/main/kotlin/com/beust/kobalt/Jvm.kt
index 1bc16a41..bce3582d 100644
--- a/src/main/kotlin/com/beust/kobalt/Jvm.kt
+++ b/src/main/kotlin/com/beust/kobalt/Jvm.kt
@@ -1,15 +1,14 @@
 package com.beust.kobalt
 
-import com.beust.kobalt.misc.KobaltLogger
 import com.beust.kobalt.maven.KobaltException
-import com.beust.kobalt.OperatingSystem
+import com.beust.kobalt.misc.log
+import com.beust.kobalt.misc.warn
 import java.io.File
 import java.io.IOException
-import java.util.HashMap
 
 public open class Jvm constructor(
         val os: com.beust.kobalt.OperatingSystem,
-        var javaBase: File? = null) : JavaInfo(), KobaltLogger {
+        var javaBase: File? = null) : JavaInfo() {
 
     private var _javaHome: File? = null
     override public var javaHome: File? = null
diff --git a/src/main/kotlin/com/beust/kobalt/Main.kt b/src/main/kotlin/com/beust/kobalt/Main.kt
index 07df0095..0d79d3c9 100644
--- a/src/main/kotlin/com/beust/kobalt/Main.kt
+++ b/src/main/kotlin/com/beust/kobalt/Main.kt
@@ -40,12 +40,12 @@ private class Main @Inject constructor(
         val depFactory: DepFactory,
         val checkVersions: CheckVersions,
         val github: GithubApi,
-        val updateKobalt: UpdateKobalt)
-    : KobaltLogger {
+        val updateKobalt: UpdateKobalt) {
 
     data class RunInfo(val jc: JCommander, val args: Args)
 
     public fun run(jc: JCommander, args: Args) {
+
         val latestVersionFuture = github.latestKobaltVersion
         benchmark("Build", {
             println(Banner.get() + Kobalt.version + "\n")
@@ -69,7 +69,7 @@ private class Main @Inject constructor(
         }
     }
 
-    public class Worker<T>(val runNodes: ArrayList<T>, val n: T) : IWorker<T>, KobaltLogger {
+    public class Worker<T>(val runNodes: ArrayList<T>, val n: T) : IWorker<T> {
         override val priority = 0
 
         override fun call() : TaskResult2<T> {
diff --git a/src/main/kotlin/com/beust/kobalt/Plugins.kt b/src/main/kotlin/com/beust/kobalt/Plugins.kt
index 5b53c6b3..d452ed54 100644
--- a/src/main/kotlin/com/beust/kobalt/Plugins.kt
+++ b/src/main/kotlin/com/beust/kobalt/Plugins.kt
@@ -10,7 +10,7 @@ import com.beust.kobalt.maven.KobaltException
 import com.beust.kobalt.maven.LocalRepo
 import com.beust.kobalt.misc.KFiles
 import com.beust.kobalt.misc.KobaltExecutors
-import com.beust.kobalt.misc.KobaltLogger
+import com.beust.kobalt.misc.log
 import com.beust.kobalt.plugin.DefaultPlugin
 import com.beust.kobalt.plugin.java.JavaPlugin
 import com.beust.kobalt.plugin.kotlin.KotlinPlugin
@@ -31,7 +31,7 @@ public class Plugins @Inject constructor (val taskManagerProvider : Provider<Tas
         val files: KFiles,
         val depFactory: DepFactory,
         val localRepo: LocalRepo,
-        val executors: KobaltExecutors): KobaltLogger {
+        val executors: KobaltExecutors) {
 
     companion object {
         public val MANIFEST_PLUGIN_CLASS : String = "Kobalt-Plugin-Class"
diff --git a/src/main/kotlin/com/beust/kobalt/ProjectGenerator.kt b/src/main/kotlin/com/beust/kobalt/ProjectGenerator.kt
index 2637d2cf..b8f172a6 100644
--- a/src/main/kotlin/com/beust/kobalt/ProjectGenerator.kt
+++ b/src/main/kotlin/com/beust/kobalt/ProjectGenerator.kt
@@ -5,7 +5,7 @@ import com.beust.kobalt.api.Kobalt
 import com.beust.kobalt.maven.Pom
 import com.beust.kobalt.maven.Pom.Dependency
 import com.beust.kobalt.misc.KFiles
-import com.beust.kobalt.misc.KobaltLogger
+import com.beust.kobalt.misc.log
 import com.github.mustachejava.DefaultMustacheFactory
 import java.io.File
 import java.io.InputStreamReader
@@ -18,7 +18,7 @@ import java.util.HashMap
 /**
  * Generate a new project.
  */
-public class ProjectGenerator : KobaltLogger {
+public class ProjectGenerator {
     companion object {
         /**
          * Turns a dot property into a proper Kotlin identifier, e.g. common.version -> commonVersion
diff --git a/src/main/kotlin/com/beust/kobalt/internal/DynamicGraph.kt b/src/main/kotlin/com/beust/kobalt/internal/DynamicGraph.kt
index f6a3673f..7ef6d37d 100644
--- a/src/main/kotlin/com/beust/kobalt/internal/DynamicGraph.kt
+++ b/src/main/kotlin/com/beust/kobalt/internal/DynamicGraph.kt
@@ -1,11 +1,9 @@
 package com.beust.kobalt.internal
 
-import com.beust.kobalt.misc.KobaltLogger
 import com.beust.kobalt.misc.NamedThreadFactory
 import com.beust.kobalt.misc.ToString
+import com.beust.kobalt.misc.log
 import com.google.common.collect.ArrayListMultimap
-import com.google.common.collect.HashMultimap
-import com.google.common.collect.TreeMultimap
 import java.util.*
 import java.util.concurrent.*
 
@@ -38,17 +36,17 @@ public interface IThreadWorkerFactory<T> {
 }
 
 public class DynamicGraphExecutor<T>(val graph: DynamicGraph<T>,
-        val factory: IThreadWorkerFactory<T>) : KobaltLogger {
+        val factory: IThreadWorkerFactory<T>) {
     val executor = Executors.newFixedThreadPool(5, NamedThreadFactory("DynamicGraphExecutor"))
     val completion = ExecutorCompletionService<TaskResult2<T>>(executor)
 
     public fun run() {
         while (graph.freeNodes.size() > 0) {
-            log(2, "Current count: ${graph.nodeCount}")
+            log(3, "Current count: ${graph.nodeCount}")
             synchronized(graph) {
                 val freeNodes = graph.freeNodes
                 freeNodes.forEach { graph.setStatus(it, DynamicGraph.Status.RUNNING)}
-                log(2, "submitting free nodes ${freeNodes}")
+                log(3, "submitting free nodes ${freeNodes}")
                 val callables : List<IWorker<T>> = factory.createWorkers(freeNodes)
                 callables.forEach { completion.submit(it) }
                 var n = callables.size()
@@ -58,7 +56,7 @@ public class DynamicGraphExecutor<T>(val graph: DynamicGraph<T>,
                     try {
                         val future = completion.take()
                         val taskResult = future.get(2, TimeUnit.SECONDS)
-                        log(2, "Received task result ${taskResult}")
+                        log(3, "Received task result ${taskResult}")
                         n--
                         graph.setStatus(taskResult.value,
                             if (taskResult.success) {
@@ -79,7 +77,7 @@ public class DynamicGraphExecutor<T>(val graph: DynamicGraph<T>,
 /**
  * Representation of the graph of methods.
  */
-public class DynamicGraph<T> : KobaltLogger {
+public class DynamicGraph<T> {
     private val DEBUG = false
 
     private val nodesReady = linkedSetOf<T>()
@@ -148,7 +146,7 @@ public class DynamicGraph<T> : KobaltLogger {
 //                }
 //            }
 
-            log(2, "freeNodes: ${result}")
+            log(3, "freeNodes: ${result}")
             return result
         }
 
@@ -178,7 +176,7 @@ public class DynamicGraph<T> : KobaltLogger {
     private fun setSkipStatus(node: T, status: Status) {
         dependingOn.get(node).forEach {
             if (! nodesSkipped.contains(it)) {
-                log(2, "Node skipped: ${it}")
+                log(3, "Node skipped: ${it}")
                 nodesSkipped.add(it)
                 nodesReady.remove(it)
                 setSkipStatus(it, status)
@@ -196,7 +194,7 @@ public class DynamicGraph<T> : KobaltLogger {
             Status.RUNNING -> nodesRunning.add(node)
             Status.FINISHED -> nodesFinished.add(node)
             Status.ERROR -> {
-                log(2, "Node in error: ${node}")
+                log(3, "Node in error: ${node}")
                 nodesReady.remove(node)
                 nodesInError.add(node)
                 setSkipStatus(node, status)
diff --git a/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt b/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt
index d0ca8b95..6db8452e 100644
--- a/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt
+++ b/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt
@@ -3,13 +3,12 @@ package com.beust.kobalt.internal
 import com.beust.kobalt.api.Project
 import com.beust.kobalt.maven.IClasspathDependency
 import com.beust.kobalt.misc.KFiles
-import com.beust.kobalt.misc.KobaltLogger
 import com.beust.kobalt.JavaInfo
 import com.beust.kobalt.SystemProperties
+import com.beust.kobalt.misc.log
 import java.io.File
 
-abstract class GenericTestRunner(open val project: Project, open val classpath: List<IClasspathDependency>)
-        : KobaltLogger {
+abstract class GenericTestRunner(open val project: Project, open val classpath: List<IClasspathDependency>) {
     abstract val mainClass: String
     abstract val args: List<String>
 
diff --git a/src/main/kotlin/com/beust/kobalt/internal/JUnitRunner.kt b/src/main/kotlin/com/beust/kobalt/internal/JUnitRunner.kt
index 7f6dccd2..29c63b10 100644
--- a/src/main/kotlin/com/beust/kobalt/internal/JUnitRunner.kt
+++ b/src/main/kotlin/com/beust/kobalt/internal/JUnitRunner.kt
@@ -2,11 +2,6 @@ package com.beust.kobalt.internal
 
 import com.beust.kobalt.api.Project
 import com.beust.kobalt.maven.IClasspathDependency
-import com.beust.kobalt.misc.KFiles
-import com.beust.kobalt.misc.KobaltLogger
-import com.beust.kobalt.JavaInfo
-import com.beust.kobalt.SystemProperties
-import java.io.File
 
 public class JUnitRunner(override val project: Project, override val classpath: List<IClasspathDependency>)
         : GenericTestRunner(project, classpath) {
diff --git a/src/main/kotlin/com/beust/kobalt/internal/JvmCompilerPlugin.kt b/src/main/kotlin/com/beust/kobalt/internal/JvmCompilerPlugin.kt
index e6f69a92..b5711f39 100644
--- a/src/main/kotlin/com/beust/kobalt/internal/JvmCompilerPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/internal/JvmCompilerPlugin.kt
@@ -7,7 +7,7 @@ import com.beust.kobalt.api.annotation.Task
 import com.beust.kobalt.maven.*
 import com.beust.kobalt.misc.KFiles
 import com.beust.kobalt.misc.KobaltExecutors
-import com.beust.kobalt.misc.KobaltLogger
+import com.beust.kobalt.misc.log
 import java.io.File
 import java.util.ArrayList
 import javax.inject.Inject
@@ -19,7 +19,7 @@ abstract public class JvmCompilerPlugin @Inject constructor(
         open val files: KFiles,
         open val depFactory: DepFactory,
         open val dependencyManager: DependencyManager,
-        open val executors: KobaltExecutors) : BasePlugin(), KobaltLogger {
+        open val executors: KobaltExecutors) : BasePlugin() {
 
     companion object {
         const val TASK_CLEAN = "clean"
diff --git a/src/main/kotlin/com/beust/kobalt/internal/TaskManager.kt b/src/main/kotlin/com/beust/kobalt/internal/TaskManager.kt
index c53ad699..e2d3212d 100644
--- a/src/main/kotlin/com/beust/kobalt/internal/TaskManager.kt
+++ b/src/main/kotlin/com/beust/kobalt/internal/TaskManager.kt
@@ -4,15 +4,15 @@ import com.beust.kobalt.Args
 import com.beust.kobalt.Plugins
 import com.beust.kobalt.api.PluginTask
 import com.beust.kobalt.api.Project
-import com.beust.kobalt.misc.KobaltLogger
 import com.beust.kobalt.maven.KobaltException
+import com.beust.kobalt.misc.log
 import com.google.common.collect.TreeMultimap
 import java.util.*
 import javax.inject.Inject
 import javax.inject.Singleton
 
 @Singleton
-public class TaskManager @Inject constructor(val plugins: Plugins, val args: Args) : KobaltLogger {
+public class TaskManager @Inject constructor(val plugins: Plugins, val args: Args) {
     private val runBefore = TreeMultimap.create<String, String>()
     private val runAfter = TreeMultimap.create<String, String>()
     private val alwaysRunAfter = TreeMultimap.create<String, String>()
@@ -206,7 +206,7 @@ public class TaskManager @Inject constructor(val plugins: Plugins, val args: Arg
     }
 }
 
-class TaskWorker(val tasks: List<PluginTask>, val dryRun: Boolean) : IWorker<PluginTask>, KobaltLogger {
+class TaskWorker(val tasks: List<PluginTask>, val dryRun: Boolean) : IWorker<PluginTask> {
 //    override fun compareTo(other: IWorker2<PluginTask>): Int {
 //        return priority.compareTo(other.priority)
 //    }
diff --git a/src/main/kotlin/com/beust/kobalt/internal/TestNgRunner.kt b/src/main/kotlin/com/beust/kobalt/internal/TestNgRunner.kt
index 42c038f9..9f60801d 100644
--- a/src/main/kotlin/com/beust/kobalt/internal/TestNgRunner.kt
+++ b/src/main/kotlin/com/beust/kobalt/internal/TestNgRunner.kt
@@ -3,11 +3,7 @@ package com.beust.kobalt.internal
 import com.beust.kobalt.api.Project
 import com.beust.kobalt.maven.IClasspathDependency
 import com.beust.kobalt.misc.KFiles
-import com.beust.kobalt.misc.KobaltLogger
-import com.beust.kobalt.JavaInfo
-import com.beust.kobalt.SystemProperties
 import java.io.File
-import java.util.*
 
 public class TestNgRunner(override val project: Project, override val classpath: List<IClasspathDependency>)
         : GenericTestRunner(project, classpath) {
diff --git a/src/main/kotlin/com/beust/kobalt/kotlin/ScriptCompiler2.kt b/src/main/kotlin/com/beust/kobalt/kotlin/ScriptCompiler2.kt
index da94c419..c8cec56c 100644
--- a/src/main/kotlin/com/beust/kobalt/kotlin/ScriptCompiler2.kt
+++ b/src/main/kotlin/com/beust/kobalt/kotlin/ScriptCompiler2.kt
@@ -7,8 +7,8 @@ import com.beust.kobalt.api.Project
 import com.beust.kobalt.api.annotation.Task
 import com.beust.kobalt.maven.KobaltException
 import com.beust.kobalt.misc.KFiles
-import com.beust.kobalt.misc.KobaltLogger
 import com.beust.kobalt.misc.countChar
+import com.beust.kobalt.misc.log
 import com.beust.kobalt.plugin.kotlin.kotlinCompilePrivate
 import com.google.inject.assistedinject.Assisted
 import java.io.File
@@ -23,7 +23,7 @@ import java.util.jar.JarInputStream
 import javax.inject.Inject
 
 public class ScriptCompiler2 @Inject constructor(@Assisted("buildFiles") val buildFiles: List<BuildFile>,
-        val files: KFiles, val plugins: Plugins) : KobaltLogger {
+        val files: KFiles, val plugins: Plugins) {
 
     interface IFactory {
         fun create(@Assisted("buildFiles") buildFiles: List<BuildFile>) : ScriptCompiler2
diff --git a/src/main/kotlin/com/beust/kobalt/maven/ArtifactFetcher.kt b/src/main/kotlin/com/beust/kobalt/maven/ArtifactFetcher.kt
index 82ce7cd1..0d736b4e 100644
--- a/src/main/kotlin/com/beust/kobalt/maven/ArtifactFetcher.kt
+++ b/src/main/kotlin/com/beust/kobalt/maven/ArtifactFetcher.kt
@@ -1,14 +1,13 @@
 package com.beust.kobalt.maven
 
 import com.beust.kobalt.misc.KFiles
-import com.beust.kobalt.misc.KobaltLogger
+import com.beust.kobalt.misc.log
 import com.google.common.cache.CacheBuilder
 import com.google.common.cache.CacheLoader
 import com.google.common.cache.LoadingCache
 import com.google.inject.assistedinject.Assisted
 import java.io.ByteArrayOutputStream
 import java.io.File
-import java.security.MessageDigest
 import java.util.concurrent.Callable
 import java.util.concurrent.ExecutorService
 import java.util.concurrent.Future
@@ -43,7 +42,7 @@ class DownloadManager @Inject constructor(val factory: ArtifactFetcher.IFactory)
  */
 class ArtifactFetcher @Inject constructor(@Assisted("url") val url: String,
         @Assisted("fileName") val fileName: String,
-        val files: KFiles, val http: Http) : Callable<File>, KobaltLogger {
+        val files: KFiles, val http: Http) : Callable<File> {
     interface IFactory {
         fun create(@Assisted("url") url: String, @Assisted("fileName") fileName: String) : ArtifactFetcher
     }
diff --git a/src/main/kotlin/com/beust/kobalt/maven/DepFactory.kt b/src/main/kotlin/com/beust/kobalt/maven/DepFactory.kt
index f67eda89..6f20fbcf 100644
--- a/src/main/kotlin/com/beust/kobalt/maven/DepFactory.kt
+++ b/src/main/kotlin/com/beust/kobalt/maven/DepFactory.kt
@@ -1,12 +1,6 @@
 package com.beust.kobalt.maven
 
-import com.beust.kobalt.maven.DownloadManager
-import com.beust.kobalt.maven.KobaltException
-import com.beust.kobalt.maven.Pom
 import com.beust.kobalt.misc.KobaltExecutors
-import com.beust.kobalt.misc.KobaltLogger
-import java.util.ArrayList
-import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.ExecutorService
 import javax.inject.Inject
 
@@ -14,7 +8,7 @@ public class DepFactory @Inject constructor(val localRepo: LocalRepo,
         val repoFinder: RepoFinder,
         val executors: KobaltExecutors,
         val downloadManager: DownloadManager,
-        val pomFactory: Pom.IFactory) : KobaltLogger {
+        val pomFactory: Pom.IFactory) {
 
     /**
      * Parse the id and return the correct IClasspathDependency
diff --git a/src/main/kotlin/com/beust/kobalt/maven/Http.kt b/src/main/kotlin/com/beust/kobalt/maven/Http.kt
index 12493822..b7f7541b 100644
--- a/src/main/kotlin/com/beust/kobalt/maven/Http.kt
+++ b/src/main/kotlin/com/beust/kobalt/maven/Http.kt
@@ -1,6 +1,6 @@
 package com.beust.kobalt.maven
 
-import com.beust.kobalt.misc.KobaltLogger
+import com.beust.kobalt.misc.log
 import com.squareup.okhttp.*
 import java.io.File
 import java.io.IOException
@@ -8,7 +8,7 @@ import java.io.InputStream
 import javax.inject.Singleton
 
 @Singleton
-public class Http : KobaltLogger {
+public class Http {
     class Body(val body: ResponseBody, val code: Int) {
         public fun getAsString() : String {
             return body.string()
diff --git a/src/main/kotlin/com/beust/kobalt/maven/LocalRepo.kt b/src/main/kotlin/com/beust/kobalt/maven/LocalRepo.kt
index e91048e6..210d88a0 100644
--- a/src/main/kotlin/com/beust/kobalt/maven/LocalRepo.kt
+++ b/src/main/kotlin/com/beust/kobalt/maven/LocalRepo.kt
@@ -1,16 +1,13 @@
 package com.beust.kobalt.maven
 
 import com.beust.kobalt.misc.KFiles
-import com.beust.kobalt.misc.KobaltLogger
 import com.beust.kobalt.misc.Versions
-import com.beust.kobalt.SystemProperties
 import java.io.File
 import java.util.Collections
-import javax.inject.Inject
 import javax.inject.Singleton
 
 @Singleton
-open public class LocalRepo(open val localRepo: String = KFiles.localRepo) : KobaltLogger {
+open public class LocalRepo(open val localRepo: String = KFiles.localRepo) {
     init {
         val l = File(localRepo)
         if (! l.exists()) {
diff --git a/src/main/kotlin/com/beust/kobalt/maven/MavenDependency.kt b/src/main/kotlin/com/beust/kobalt/maven/MavenDependency.kt
index c7b34342..344f9d59 100644
--- a/src/main/kotlin/com/beust/kobalt/maven/MavenDependency.kt
+++ b/src/main/kotlin/com/beust/kobalt/maven/MavenDependency.kt
@@ -18,7 +18,7 @@ public class MavenDependency @Inject constructor(override @Assisted("groupId") v
         val repoFinder: RepoFinder,
         val pomFactory: Pom.IFactory,
         val downloadManager: DownloadManager)
-            : LocalDep(groupId, artifactId, version, localRepo), KobaltLogger, IClasspathDependency,
+            : LocalDep(groupId, artifactId, version, localRepo), IClasspathDependency,
                 Comparable<MavenDependency> {
     override var jarFile: Future<File> by Delegates.notNull()
     var pomFile: Future<File> by Delegates.notNull()
diff --git a/src/main/kotlin/com/beust/kobalt/maven/Pom.kt b/src/main/kotlin/com/beust/kobalt/maven/Pom.kt
index e6790bdd..8086c816 100644
--- a/src/main/kotlin/com/beust/kobalt/maven/Pom.kt
+++ b/src/main/kotlin/com/beust/kobalt/maven/Pom.kt
@@ -1,7 +1,7 @@
 package com.beust.kobalt.maven
 
-import com.beust.kobalt.misc.KobaltLogger
 import com.beust.kobalt.misc.ToString
+import com.beust.kobalt.misc.log
 import com.google.inject.assistedinject.Assisted
 import org.w3c.dom.Element
 import org.w3c.dom.NodeList
@@ -11,7 +11,7 @@ import javax.xml.xpath.XPathConstants
 import kotlin.dom.childElements
 
 public class Pom @javax.inject.Inject constructor(@Assisted val id: String,
-        @Assisted documentFile: java.io.File) : KobaltLogger {
+        @Assisted documentFile: java.io.File) {
     val XPATH_FACTORY = javax.xml.xpath.XPathFactory.newInstance()
     val XPATH = XPATH_FACTORY.newXPath()
     var groupId: String? = null
@@ -26,7 +26,7 @@ public class Pom @javax.inject.Inject constructor(@Assisted val id: String,
     }
 
     data public class Dependency(val groupId: String, val artifactId: String, val version: String,
-            val optional: Boolean = false, val scope: String? = null) : KobaltLogger {
+            val optional: Boolean = false, val scope: String? = null) {
 
         /** When a variable is used in a maven file, e.g. ${version} */
         private val VAR = "$" + "{"
diff --git a/src/main/kotlin/com/beust/kobalt/maven/PomGenerator.kt b/src/main/kotlin/com/beust/kobalt/maven/PomGenerator.kt
index dcfe4447..a67a47b6 100644
--- a/src/main/kotlin/com/beust/kobalt/maven/PomGenerator.kt
+++ b/src/main/kotlin/com/beust/kobalt/maven/PomGenerator.kt
@@ -1,22 +1,20 @@
 package com.beust.kobalt.maven
 
 import com.beust.kobalt.api.Project
-import com.beust.kobalt.misc.KobaltLogger
 import com.beust.kobalt.SystemProperties
+import com.beust.kobalt.misc.log
 import com.google.common.base.Preconditions
 import com.google.inject.assistedinject.Assisted
 import org.apache.maven.model.Developer
-import org.apache.maven.model.License
 import org.apache.maven.model.Model
 import org.apache.maven.model.Scm
 import org.apache.maven.model.io.xpp3.MavenXpp3Writer
 import java.io.File
 import java.io.StringWriter
 import java.nio.charset.Charset
-import java.util.*
 import javax.inject.Inject
 
-public class PomGenerator @Inject constructor(@Assisted val project: Project) : KobaltLogger {
+public class PomGenerator @Inject constructor(@Assisted val project: Project) {
     interface IFactory {
         fun create(project: Project) : PomGenerator
     }
diff --git a/src/main/kotlin/com/beust/kobalt/maven/RepoFinder.kt b/src/main/kotlin/com/beust/kobalt/maven/RepoFinder.kt
index 2933e62e..ad34557e 100644
--- a/src/main/kotlin/com/beust/kobalt/maven/RepoFinder.kt
+++ b/src/main/kotlin/com/beust/kobalt/maven/RepoFinder.kt
@@ -2,8 +2,9 @@ package com.beust.kobalt.maven
 
 import com.beust.kobalt.api.Kobalt
 import com.beust.kobalt.misc.KobaltExecutors
-import com.beust.kobalt.misc.KobaltLogger
 import com.beust.kobalt.misc.Strings
+import com.beust.kobalt.misc.log
+import com.beust.kobalt.misc.warn
 import com.google.common.cache.CacheBuilder
 import com.google.common.cache.CacheLoader
 import com.google.common.cache.LoadingCache
@@ -20,7 +21,7 @@ import kotlin.dom.parseXml
  * Find the repo that contains the given dependency among a list of repos. Searches are performed in parallel and
  * cached so we never make a network call for the same dependency more than once.
  */
-public class RepoFinder @Inject constructor(val http: Http, val executors: KobaltExecutors) : KobaltLogger {
+public class RepoFinder @Inject constructor(val http: Http, val executors: KobaltExecutors) {
     public fun findCorrectRepo(id: String): RepoResult {
         return FOUND_REPOS.get(id)
     }
diff --git a/src/main/kotlin/com/beust/kobalt/misc/CheckVersions.kt b/src/main/kotlin/com/beust/kobalt/misc/CheckVersions.kt
index 76f94712..d9be13d3 100644
--- a/src/main/kotlin/com/beust/kobalt/misc/CheckVersions.kt
+++ b/src/main/kotlin/com/beust/kobalt/misc/CheckVersions.kt
@@ -10,7 +10,7 @@ import com.google.inject.Inject
  * Find out if any newer versions of the dependencies are available.
  */
 public class CheckVersions @Inject constructor(val depFactory : DepFactory,
-        val executors : KobaltExecutors) : KobaltLogger {
+        val executors : KobaltExecutors) {
 
     fun run(projects: List<Project>) {
         val executor = executors.newExecutor("CheckVersions", 5)
diff --git a/src/main/kotlin/com/beust/kobalt/misc/GithubApi.kt b/src/main/kotlin/com/beust/kobalt/misc/GithubApi.kt
index 07ef97f5..71f9bafd 100644
--- a/src/main/kotlin/com/beust/kobalt/misc/GithubApi.kt
+++ b/src/main/kotlin/com/beust/kobalt/misc/GithubApi.kt
@@ -13,7 +13,7 @@ import java.util.concurrent.Future
 /**
  * Retrieve Kobalt's latest release version from github.
  */
-public class GithubApi @Inject constructor(val executors: KobaltExecutors) : KobaltLogger {
+public class GithubApi @Inject constructor(val executors: KobaltExecutors) {
     companion object {
         const val HOST = "https://api.github.com/"
     }
diff --git a/src/main/kotlin/com/beust/kobalt/misc/KFiles.kt b/src/main/kotlin/com/beust/kobalt/misc/KFiles.kt
index 6af6e2c5..fc796244 100644
--- a/src/main/kotlin/com/beust/kobalt/misc/KFiles.kt
+++ b/src/main/kotlin/com/beust/kobalt/misc/KFiles.kt
@@ -20,7 +20,7 @@ public class KFiles {
             val jarFile = File(jar)
             val envJar = System.getenv("KOBALT_JAR")
             if (! jarFile.exists() && envJar != null) {
-                KobaltLogger.debug("Using kobalt jar $envJar")
+                debug("Using kobalt jar $envJar")
                 return File(envJar).absolutePath
             }
             if (! jarFile.exists()) {
@@ -80,7 +80,7 @@ public class KFiles {
 
             allDirs.forEach {
                 if (! it.exists()) {
-                    KobaltLogger.log(2, "Couldn't find directory ${it}")
+                    log(2, "Couldn't find directory ${it}")
                 } else {
                     result.addAll(findRecursively(it, function))
                 }
@@ -126,28 +126,28 @@ public class KFiles {
          */
         fun findBuildScriptLocation(buildFile: BuildFile, jarFile: String) : String {
             val result = joinDir(findDotDir(buildFile.directory).absolutePath, KFiles.SCRIPT_BUILD_DIR, jarFile)
-            KobaltLogger.log(2, "Script jar file: ${result}")
+            log(2, "Script jar file: ${result}")
             return result
         }
 
         public fun saveFile(file: File, text: String) {
             file.absoluteFile.parentFile.mkdirs()
             file.writeText(text)
-            KobaltLogger.log(2, "Wrote ${file}")
+            log(2, "Wrote ${file}")
         }
 
         private fun isWindows() = System.getProperty("os.name").contains("Windows");
 
         public fun copy(from: Path?, to: Path?, option: StandardCopyOption) {
             if (isWindows() && to!!.toFile().exists()) {
-                KobaltLogger.log(2, "Windows detected, not overwriting ${to!!}")
+                log(2, "Windows detected, not overwriting ${to!!}")
             } else {
                 try {
-                    KobaltLogger.log(2, "Copy from $from!! to ${to!!}")
+                    log(2, "Copy from $from!! to ${to!!}")
                     Files.copy(from, to, option)
                 } catch(ex: IOException) {
                     // Windows is anal about this
-                    KobaltLogger.log(1, "Couldn't copy ${from} to ${to}: ${ex.getMessage()}")
+                    log(1, "Couldn't copy ${from} to ${to}: ${ex.getMessage()}")
                 }
             }
         }
diff --git a/src/main/kotlin/com/beust/kobalt/misc/KobaltExecutors.kt b/src/main/kotlin/com/beust/kobalt/misc/KobaltExecutors.kt
index 14efc038..c767bd1a 100644
--- a/src/main/kotlin/com/beust/kobalt/misc/KobaltExecutors.kt
+++ b/src/main/kotlin/com/beust/kobalt/misc/KobaltExecutors.kt
@@ -1,10 +1,6 @@
 package com.beust.kobalt.misc
 
-import com.beust.kobalt.maven.KobaltException
-import com.google.inject.Provides
 import java.util.concurrent.*
-import javax.inject.Singleton
-import kotlin.properties.Delegates
 
 class NamedThreadFactory(val n: String) : ThreadFactory {
     private val PREFIX = "K-"
@@ -21,11 +17,11 @@ class NamedThreadFactory(val n: String) : ThreadFactory {
 }
 
 class KobaltExecutor(name: String, threadCount: Int)
-        : KobaltLogger, ThreadPoolExecutor(threadCount, threadCount, 5L, TimeUnit.SECONDS,
+        : ThreadPoolExecutor(threadCount, threadCount, 5L, TimeUnit.SECONDS,
                 LinkedBlockingQueue<Runnable>(), NamedThreadFactory(name)) {
 
     override protected fun afterExecute(r: Runnable, t: Throwable?) {
-        super<ThreadPoolExecutor>.afterExecute(r, t)
+        super.afterExecute(r, t)
         var ex : Throwable? = null
         if (t == null && r is Future<*>) {
             try {
@@ -44,7 +40,7 @@ class KobaltExecutor(name: String, threadCount: Int)
     }
 }
 
-public class KobaltExecutors : KobaltLogger {
+public class KobaltExecutors {
     public fun newExecutor(name: String, threadCount: Int) : ExecutorService
             = KobaltExecutor(name, threadCount)
 
diff --git a/src/main/kotlin/com/beust/kobalt/misc/KobaltLogger.kt b/src/main/kotlin/com/beust/kobalt/misc/KobaltLogger.kt
index bc12dd04..66104ba7 100644
--- a/src/main/kotlin/com/beust/kobalt/misc/KobaltLogger.kt
+++ b/src/main/kotlin/com/beust/kobalt/misc/KobaltLogger.kt
@@ -1,34 +1,33 @@
 package com.beust.kobalt.misc
 
-import org.slf4j.Logger
-import org.slf4j.LoggerFactory
-
-public interface KobaltLogger {
-    val logger : Logger
-        get() = LoggerFactory.getLogger(javaClass.simpleName)
+import com.beust.kobalt.api.Kobalt
+import java.text.SimpleDateFormat
+import java.util.*
 
+internal interface KobaltLogger {
     companion object {
-
         public var LOG_LEVEL : Int = 1
 
+        val logger : Logger get() = Logger(Kobalt.context!!.args.dev)
+
         fun log(level: Int, s: String) {
             if (level <= LOG_LEVEL) {
-                LoggerFactory.getLogger(KobaltLogger::class.java.simpleName).info(s)
+                logger.log("Logger", s)
             }
         }
 
         fun warn(s: String, e: Throwable? = null) {
-            LoggerFactory.getLogger(KobaltLogger::class.java.simpleName).warn(s, e)
+            logger.warn("Logger", s, e)
         }
 
         fun debug(s: String) {
-            LoggerFactory.getLogger(KobaltLogger::class.java.simpleName).debug(s)
+            logger.debug(s)
         }
     }
 
     final fun log(level: Int = 1, message: String) {
         if (level <= LOG_LEVEL) {
-            logger.info(message)
+            logger.log("Logger", message)
         }
     }
 
@@ -37,10 +36,48 @@ public interface KobaltLogger {
     }
 
     final fun error(message: String, e: Throwable? = null) {
-        logger.error("***** $message", e)
+        logger.error("Logger", "***** $message", e)
     }
 
     final fun warn(message: String, e: Throwable? = null) {
-        logger.warn(message, e)
+        logger.warn("Logger", message, e)
     }
 }
+
+fun Any.log(level: Int, text: String) {
+    if (level <= KobaltLogger.LOG_LEVEL) {
+        KobaltLogger.logger.log(javaClass.simpleName, text)
+    }
+}
+
+fun Any.debug(text: String) {
+    KobaltLogger.logger.debug(javaClass.simpleName, text)
+}
+
+fun Any.warn(text: String) {
+    KobaltLogger.logger.warn(javaClass.simpleName, text)
+}
+
+class Logger(val dev: Boolean) {
+    val FORMAT = SimpleDateFormat("HH:mm:ss.SSS")
+
+    private fun getPattern(type: String, tag: String, message: String) =
+        if (dev) {
+            val ts = FORMAT.format(Date())
+            "$type/$ts [" + Thread.currentThread().name + "] $tag - $message"
+        } else {
+            message
+        }
+
+    final fun debug(tag: String, message: String) =
+        println(getPattern("D", tag, message))
+
+    final fun error(tag: String, message: String, e: Throwable? = null) =
+        println(getPattern("E", tag, message))
+
+    final fun warn(tag: String, message: String, e: Throwable? = null) =
+        println(getPattern("W", tag, message))
+
+    final fun log(tag: String, message: String) =
+        println(getPattern("L", tag, message))
+}
diff --git a/src/main/kotlin/com/beust/kobalt/misc/Versions.kt b/src/main/kotlin/com/beust/kobalt/misc/Versions.kt
index 3af2b8ff..f91ec3b6 100644
--- a/src/main/kotlin/com/beust/kobalt/misc/Versions.kt
+++ b/src/main/kotlin/com/beust/kobalt/misc/Versions.kt
@@ -16,7 +16,7 @@ public class Versions {
                 try {
                     return java.lang.Long.parseLong(s, radix)
                 } catch(ex: NumberFormatException) {
-                    KobaltLogger.warn("Couldn't parse version \"${version}\"")
+                    warn("Couldn't parse version \"${version}\"")
                     return 0L
                 }
             }
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/DefaultPlugin.kt b/src/main/kotlin/com/beust/kobalt/plugin/DefaultPlugin.kt
index f58f025a..2c856f1e 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/DefaultPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/DefaultPlugin.kt
@@ -1,20 +1,13 @@
 package com.beust.kobalt.plugin
 
-import com.beust.kobalt.Plugins
 import com.beust.kobalt.api.BasePlugin
-import com.beust.kobalt.api.Dependencies
-import com.beust.kobalt.api.Project
-import com.beust.kobalt.api.annotation.Directive
-import com.beust.kobalt.api.annotation.Task
-import com.beust.kobalt.internal.TaskResult
-import com.beust.kobalt.misc.KobaltLogger
 import javax.inject.Singleton
 
 /**
  * This plugin is used to gather tasks defined in build files, since these tasks don't really belong to any plugin.
  */
 @Singleton
-public class DefaultPlugin : BasePlugin(), KobaltLogger {
+public class DefaultPlugin : BasePlugin() {
     companion object {
         public val NAME = "Default"
     }
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/apt/AptPlugin.kt b/src/main/kotlin/com/beust/kobalt/plugin/apt/AptPlugin.kt
index d4b00a94..ebf67659 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/apt/AptPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/apt/AptPlugin.kt
@@ -1,6 +1,5 @@
 package com.beust.kobalt.plugin.apt
 
-import com.beust.kobalt.Plugins
 import com.beust.kobalt.api.BasePlugin
 import com.beust.kobalt.api.Dependencies
 import com.beust.kobalt.api.Kobalt
@@ -8,11 +7,11 @@ import com.beust.kobalt.api.Project
 import com.beust.kobalt.api.annotation.Directive
 import com.beust.kobalt.api.annotation.Task
 import com.beust.kobalt.internal.TaskResult
-import com.beust.kobalt.misc.KobaltLogger
+import com.beust.kobalt.misc.log
 import javax.inject.Singleton
 
 @Singleton
-public class AptPlugin : BasePlugin(), KobaltLogger {
+public class AptPlugin : BasePlugin() {
     companion object {
         public const val TASK_APT: String = "runApt"
     }
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/java/JavaPlugin.kt b/src/main/kotlin/com/beust/kobalt/plugin/java/JavaPlugin.kt
index a575f653..590c8cf5 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/java/JavaPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/java/JavaPlugin.kt
@@ -10,10 +10,10 @@ import com.beust.kobalt.internal.TaskResult
 import com.beust.kobalt.maven.*
 import com.beust.kobalt.misc.KFiles
 import com.beust.kobalt.misc.KobaltExecutors
-import com.beust.kobalt.misc.KobaltLogger
 import com.beust.kobalt.JavaInfo
 import com.beust.kobalt.Jvm
 import com.beust.kobalt.SystemProperties
+import com.beust.kobalt.misc.log
 import java.io.File
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -25,7 +25,7 @@ public class JavaPlugin @Inject constructor(
         override val depFactory: DepFactory,
         override val dependencyManager: DependencyManager,
         override val executors: KobaltExecutors)
-        : JvmCompilerPlugin(localRepo, files, depFactory, dependencyManager, executors), KobaltLogger {
+        : JvmCompilerPlugin(localRepo, files, depFactory, dependencyManager, executors) {
 
     init {
         Kobalt.registerCompiler(JavaCompilerInfo())
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinCompiler.kt b/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinCompiler.kt
index 19f08748..d651c774 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinCompiler.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinCompiler.kt
@@ -4,9 +4,8 @@ import com.beust.kobalt.api.Kobalt
 import com.beust.kobalt.internal.JvmCompilerPlugin
 import com.beust.kobalt.internal.TaskResult
 import com.beust.kobalt.maven.*
-import com.beust.kobalt.misc.KFiles
 import com.beust.kobalt.misc.KobaltExecutors
-import com.beust.kobalt.misc.KobaltLogger
+import com.beust.kobalt.misc.log
 import org.jetbrains.kotlin.cli.jvm.K2JVMCompiler
 import java.io.File
 import javax.inject.Inject
@@ -23,7 +22,7 @@ class KotlinCompiler @Inject constructor(override val localRepo : LocalRepo,
         override val depFactory: DepFactory,
         override val dependencyManager: DependencyManager,
         override val executors: KobaltExecutors)
-        : JvmCompilerPlugin(localRepo, files, depFactory, dependencyManager, executors), KobaltLogger {
+        : JvmCompilerPlugin(localRepo, files, depFactory, dependencyManager, executors) {
     private val KOTLIN_VERSION = "0.14.449"
 
     override val name = "kotlin"
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinPlugin.kt b/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinPlugin.kt
index 05d39ca9..31dfe263 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinPlugin.kt
@@ -1,20 +1,15 @@
 package com.beust.kobalt.plugin.kotlin
 
-import com.beust.kobalt.Plugins
-import com.beust.kobalt.api.ICompilerInfo
 import com.beust.kobalt.api.Kobalt
-import com.beust.kobalt.api.KobaltContext
 import com.beust.kobalt.api.Project
 import com.beust.kobalt.api.annotation.Directive
 import com.beust.kobalt.api.annotation.Task
 import com.beust.kobalt.internal.JvmCompilerPlugin
 import com.beust.kobalt.internal.TaskResult
-import com.beust.kobalt.internal.TaskResult2
 import com.beust.kobalt.maven.*
 import com.beust.kobalt.misc.KFiles
 import com.beust.kobalt.misc.KobaltExecutors
-import com.beust.kobalt.misc.KobaltLogger
-import com.beust.kobalt.plugin.java.JavaProject
+import com.beust.kobalt.misc.log
 import java.io.File
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -26,7 +21,7 @@ public class KotlinPlugin @Inject constructor(
         override val depFactory: DepFactory,
         override val dependencyManager: DependencyManager,
         override val executors: KobaltExecutors)
-        : JvmCompilerPlugin(localRepo, files, depFactory, dependencyManager, executors), KobaltLogger {
+        : JvmCompilerPlugin(localRepo, files, depFactory, dependencyManager, executors) {
 
     init {
         Kobalt.registerCompiler(KotlinCompilerInfo())
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/packaging/JarUtils.kt b/src/main/kotlin/com/beust/kobalt/plugin/packaging/JarUtils.kt
index 16eff5cd..f4eb227d 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/packaging/JarUtils.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/packaging/JarUtils.kt
@@ -1,7 +1,7 @@
 package com.beust.kobalt.plugin.packaging
 
 import com.beust.kobalt.IFileSpec
-import com.beust.kobalt.misc.KobaltLogger
+import com.beust.kobalt.misc.log
 import java.io.*
 import java.util.jar.JarEntry
 import java.util.jar.JarFile
@@ -10,7 +10,7 @@ import java.util.jar.JarOutputStream
 import java.util.zip.ZipEntry
 import java.util.zip.ZipOutputStream
 
-public class JarUtils : KobaltLogger {
+public class JarUtils {
     companion object {
 //        private fun isExcluded(entryName: String) : Boolean {
 //            val isAuth = entryName.startsWith("META-INF") and (
@@ -90,7 +90,7 @@ public class JarUtils : KobaltLogger {
                         addSingleFile(directory, subFiles, outputStream, expandJarFiles)
                     } else {
                         if (expandJarFiles and source.name.endsWith(".jar")) {
-                            KobaltLogger.log(2, "Writing contents of jar file ${source}")
+                            log(2, "Writing contents of jar file ${source}")
                             val stream = JarInputStream(FileInputStream(source))
                             var entry = stream.nextEntry
                             while (entry != null) {
@@ -151,7 +151,7 @@ public class JarUtils : KobaltLogger {
             }
             os.close()
 
-            KobaltLogger.log(1, "Deduplicated $fromFile.name")
+            log(1, "Deduplicated $fromFile.name")
         }
 
     }
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/packaging/PackagingPlugin.kt b/src/main/kotlin/com/beust/kobalt/plugin/packaging/PackagingPlugin.kt
index f0467e63..b9733db4 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/packaging/PackagingPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/packaging/PackagingPlugin.kt
@@ -14,22 +14,15 @@ import com.beust.kobalt.internal.JvmCompilerPlugin
 import com.beust.kobalt.internal.TaskResult
 import com.beust.kobalt.maven.DependencyManager
 import com.beust.kobalt.maven.LocalRepo
-import com.beust.kobalt.maven.MavenDependency
-import com.beust.kobalt.maven.SimpleDep
-import com.beust.kobalt.misc.KFiles
-import com.beust.kobalt.misc.KobaltExecutors
-import com.beust.kobalt.misc.KobaltLogger
-import com.beust.kobalt.misc.ToString
+import com.beust.kobalt.misc.*
 import com.beust.kobalt.plugin.java.JavaPlugin
 import java.io.File
-import java.io.FileInputStream
 import java.io.FileOutputStream
 import java.io.OutputStream
 import java.nio.file.FileSystems
 import java.nio.file.PathMatcher
 import java.nio.file.Paths
 import java.nio.file.StandardCopyOption
-import java.util.ArrayList
 import java.util.jar.JarOutputStream
 import java.util.zip.ZipOutputStream
 import javax.inject.Inject
@@ -44,7 +37,7 @@ public fun assemble(project: Project, init: Package.(p: Project) -> Unit): Packa
 
 @Singleton
 public class PackagingPlugin @Inject constructor(val dependencyManager : DependencyManager,
-        val executors: KobaltExecutors, val localRepo: LocalRepo) : BasePlugin(), KobaltLogger {
+        val executors: KobaltExecutors, val localRepo: LocalRepo) : BasePlugin() {
 
     companion object {
         public const val TASK_ASSEMBLE : String = "assemble"
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/publish/JCenterApi.kt b/src/main/kotlin/com/beust/kobalt/plugin/publish/JCenterApi.kt
index f98ca261..fb4b1b31 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/publish/JCenterApi.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/publish/JCenterApi.kt
@@ -6,15 +6,13 @@ import com.beust.kobalt.internal.TaskResult
 import com.beust.kobalt.maven.Http
 import com.beust.kobalt.maven.KobaltException
 import com.beust.kobalt.maven.Md5
-import com.beust.kobalt.misc.KobaltLogger
+import com.beust.kobalt.misc.log
 import com.google.inject.assistedinject.Assisted
 import com.squareup.okhttp.Response
 import org.jetbrains.annotations.Nullable
 import java.io.ByteArrayInputStream
 import java.io.File
 import java.nio.charset.Charset
-import java.nio.file.Files
-import java.nio.file.Paths
 import javax.inject.Inject
 
 data class JCenterPackage(val jo: JsonObject) {
@@ -45,7 +43,7 @@ open public class UnauthenticatedJCenterApi @Inject constructor(open val http: H
 
 public class JCenterApi @Inject constructor (@Nullable @Assisted("username") val username: String?,
         @Nullable @Assisted("password") val password: String?,
-        override val http: Http) : UnauthenticatedJCenterApi(http), KobaltLogger {
+        override val http: Http) : UnauthenticatedJCenterApi(http) {
 
     interface IFactory {
         fun create(@Nullable @Assisted("username") username: String?,
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/publish/PublishPlugin.kt b/src/main/kotlin/com/beust/kobalt/plugin/publish/PublishPlugin.kt
index f89ed1b5..1c974fe3 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/publish/PublishPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/publish/PublishPlugin.kt
@@ -1,7 +1,5 @@
 package com.beust.kobalt.plugin.publish
 
-import com.beust.klaxon.string
-import com.beust.kobalt.Plugins
 import com.beust.kobalt.api.BasePlugin
 import com.beust.kobalt.api.Kobalt
 import com.beust.kobalt.api.Project
@@ -9,10 +7,7 @@ import com.beust.kobalt.api.annotation.Directive
 import com.beust.kobalt.api.annotation.Task
 import com.beust.kobalt.internal.TaskResult
 import com.beust.kobalt.maven.Http
-import com.beust.kobalt.maven.KobaltException
-import com.beust.kobalt.misc.KobaltLogger
 import com.google.common.base.Preconditions
-import org.jetbrains.kotlin.utils.sure
 import java.io.File
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -21,7 +16,7 @@ import javax.inject.Singleton
 public class PublishPlugin @Inject constructor(val http: Http, val files: com.beust.kobalt.misc.KFiles,
             val factory: com.beust.kobalt.maven.PomGenerator.IFactory,
             val jcenterFactory: JCenterApi.IFactory)
-        : BasePlugin(), KobaltLogger {
+        : BasePlugin() {
 
     override val name = "publish"
 
diff --git a/src/main/kotlin/com/beust/kobalt/wrapper/Wrapper.kt b/src/main/kotlin/com/beust/kobalt/wrapper/Wrapper.kt
index b1e5d14f..45c0ffdb 100644
--- a/src/main/kotlin/com/beust/kobalt/wrapper/Wrapper.kt
+++ b/src/main/kotlin/com/beust/kobalt/wrapper/Wrapper.kt
@@ -2,13 +2,12 @@ package com.beust.kobalt.wrapper
 
 import com.beust.kobalt.maven.Http
 import com.beust.kobalt.misc.KFiles
-import com.beust.kobalt.misc.KobaltLogger
 import com.beust.kobalt.misc.benchmark
 import com.beust.kobalt.JavaInfo
 import com.beust.kobalt.SystemProperties
+import com.beust.kobalt.misc.log
 import java.io.File
 import java.io.FileReader
-import java.io.IOException
 import java.io.InputStream
 import java.nio.file.Files
 import java.nio.file.Path
@@ -23,7 +22,7 @@ public fun main(argv: Array<String>) {
 /**
  * Download and install a new wrapper if requested.
  */
-public class Wrapper : KobaltLogger {
+public class Wrapper {
     // kobalt.properties
     private val KOBALT_PROPERTIES = "kobalt.properties"
     private val KOBALTW = "kobaltw"