diff --git a/sbt-coursier/src/sbt-test/sbt-coursier/no-pom-artifact/build.sbt b/sbt-coursier/src/sbt-test/sbt-coursier/no-pom-artifact/build.sbt
index 274b6a675..19c403d7c 100644
--- a/sbt-coursier/src/sbt-test/sbt-coursier/no-pom-artifact/build.sbt
+++ b/sbt-coursier/src/sbt-test/sbt-coursier/no-pom-artifact/build.sbt
@@ -1,4 +1,6 @@
 
+import Compatibility._
+
 lazy val noPomCheck = TaskKey[Unit]("noPomCheck")
 
 noPomCheck := {
@@ -6,7 +8,7 @@ noPomCheck := {
   val log = streams.value.log
 
   val configReport = update.value
-    .configuration("compile")
+    .configuration(Compile)
     .getOrElse {
       throw new Exception(
         "compile configuration not found in update report"
diff --git a/sbt-coursier/src/sbt-test/sbt-coursier/no-pom-artifact/project/src/main/scala-2.10/Compatibility.scala b/sbt-coursier/src/sbt-test/sbt-coursier/no-pom-artifact/project/src/main/scala-2.10/Compatibility.scala
new file mode 100644
index 000000000..8824f1209
--- /dev/null
+++ b/sbt-coursier/src/sbt-test/sbt-coursier/no-pom-artifact/project/src/main/scala-2.10/Compatibility.scala
@@ -0,0 +1,8 @@
+object Compatibility {
+
+  implicit class UpdateReportOps(val rep: sbt.UpdateReport) extends AnyVal {
+    def configuration(conf: sbt.Configuration) =
+      rep.configuration(conf.name)
+  }
+
+}
diff --git a/sbt-coursier/src/sbt-test/sbt-coursier/no-pom-artifact/project/src/main/scala-2.12/Compatibility.scala b/sbt-coursier/src/sbt-test/sbt-coursier/no-pom-artifact/project/src/main/scala-2.12/Compatibility.scala
new file mode 100644
index 000000000..19835e1be
--- /dev/null
+++ b/sbt-coursier/src/sbt-test/sbt-coursier/no-pom-artifact/project/src/main/scala-2.12/Compatibility.scala
@@ -0,0 +1 @@
+object Compatibility
diff --git a/sbt-coursier/src/sbt-test/sbt-coursier/publish-local-sources-javadoc-conf/build.sbt b/sbt-coursier/src/sbt-test/sbt-coursier/publish-local-sources-javadoc-conf/build.sbt
index 83b642554..8bebbda09 100644
--- a/sbt-coursier/src/sbt-test/sbt-coursier/publish-local-sources-javadoc-conf/build.sbt
+++ b/sbt-coursier/src/sbt-test/sbt-coursier/publish-local-sources-javadoc-conf/build.sbt
@@ -1,4 +1,6 @@
 
+import Compatibility._
+
 val org = "io.get-coursier.scriptedtest"
 val ver = "0.1.0-SNAPSHOT"
 
@@ -25,13 +27,13 @@ lazy val shared = Seq(
     val updateReport = update.value
     val updateClassifiersReport = updateClassifiers.value
 
-    def artifacts(config: String, classifier: Option[String], useClassifiersReport: Boolean = false) = {
+    def artifacts(classifier: Option[String], useClassifiersReport: Boolean = false) = {
 
       val configReport = (if (useClassifiersReport) updateClassifiersReport else updateReport)
-        .configuration(config)
+        .configuration(Compile)
         .getOrElse {
           throw new Exception(
-            s"$config configuration not found in update report"
+            "Compile configuration not found in update report"
           )
         }
 
@@ -44,7 +46,7 @@ lazy val shared = Seq(
         }
 
       log.info(
-        s"Found ${artifacts.length} artifacts for config $config / classifier $classifier" +
+        s"Found ${artifacts.length} artifacts for config Compile / classifier $classifier" +
           (if (useClassifiersReport) " in classifiers report" else "")
       )
       for (a <- artifacts)
@@ -53,11 +55,11 @@ lazy val shared = Seq(
       artifacts
     }
 
-    val compileSourceArtifacts = artifacts("compile", Some("sources"))
-    val sourceArtifacts = artifacts("compile", Some("sources"), useClassifiersReport = true)
+    val compileSourceArtifacts = artifacts(Some("sources"))
+    val sourceArtifacts = artifacts(Some("sources"), useClassifiersReport = true)
 
-    val compileDocArtifacts = artifacts("compile", Some("javadoc"))
-    val docArtifacts = artifacts("compile", Some("javadoc"), useClassifiersReport = true)
+    val compileDocArtifacts = artifacts(Some("javadoc"))
+    val docArtifacts = artifacts(Some("javadoc"), useClassifiersReport = true)
 
     assert(
       compileSourceArtifacts.isEmpty,
diff --git a/sbt-coursier/src/sbt-test/sbt-coursier/publish-local-sources-javadoc-conf/project/src/main/scala-2.10/Compatibility.scala b/sbt-coursier/src/sbt-test/sbt-coursier/publish-local-sources-javadoc-conf/project/src/main/scala-2.10/Compatibility.scala
new file mode 100644
index 000000000..8824f1209
--- /dev/null
+++ b/sbt-coursier/src/sbt-test/sbt-coursier/publish-local-sources-javadoc-conf/project/src/main/scala-2.10/Compatibility.scala
@@ -0,0 +1,8 @@
+object Compatibility {
+
+  implicit class UpdateReportOps(val rep: sbt.UpdateReport) extends AnyVal {
+    def configuration(conf: sbt.Configuration) =
+      rep.configuration(conf.name)
+  }
+
+}
diff --git a/sbt-coursier/src/sbt-test/sbt-coursier/publish-local-sources-javadoc-conf/project/src/main/scala-2.12/Compatibility.scala b/sbt-coursier/src/sbt-test/sbt-coursier/publish-local-sources-javadoc-conf/project/src/main/scala-2.12/Compatibility.scala
new file mode 100644
index 000000000..19835e1be
--- /dev/null
+++ b/sbt-coursier/src/sbt-test/sbt-coursier/publish-local-sources-javadoc-conf/project/src/main/scala-2.12/Compatibility.scala
@@ -0,0 +1 @@
+object Compatibility
diff --git a/sbt-coursier/src/sbt-test/sbt-coursier/scala-sources-javadoc-jars/build.sbt b/sbt-coursier/src/sbt-test/sbt-coursier/scala-sources-javadoc-jars/build.sbt
index 30308c1b3..846809c67 100644
--- a/sbt-coursier/src/sbt-test/sbt-coursier/scala-sources-javadoc-jars/build.sbt
+++ b/sbt-coursier/src/sbt-test/sbt-coursier/scala-sources-javadoc-jars/build.sbt
@@ -1,3 +1,6 @@
+
+import Compatibility._
+
 scalaVersion := appConfiguration.value.provider.scalaProvider.version
 
 lazy val updateClassifiersCheck = TaskKey[Unit]("updateClassifiersCheck")
@@ -5,7 +8,7 @@ lazy val updateClassifiersCheck = TaskKey[Unit]("updateClassifiersCheck")
 updateClassifiersCheck := {
 
   val configReport = updateClassifiers.value
-    .configuration("compile")
+    .configuration(Compile)
     .getOrElse {
       throw new Exception(
         "compile configuration not found in updateClassifiers report"
diff --git a/sbt-coursier/src/sbt-test/sbt-coursier/scala-sources-javadoc-jars/project/src/main/scala-2.10/Compatibility.scala b/sbt-coursier/src/sbt-test/sbt-coursier/scala-sources-javadoc-jars/project/src/main/scala-2.10/Compatibility.scala
new file mode 100644
index 000000000..8824f1209
--- /dev/null
+++ b/sbt-coursier/src/sbt-test/sbt-coursier/scala-sources-javadoc-jars/project/src/main/scala-2.10/Compatibility.scala
@@ -0,0 +1,8 @@
+object Compatibility {
+
+  implicit class UpdateReportOps(val rep: sbt.UpdateReport) extends AnyVal {
+    def configuration(conf: sbt.Configuration) =
+      rep.configuration(conf.name)
+  }
+
+}
diff --git a/sbt-coursier/src/sbt-test/sbt-coursier/scala-sources-javadoc-jars/project/src/main/scala-2.12/Compatibility.scala b/sbt-coursier/src/sbt-test/sbt-coursier/scala-sources-javadoc-jars/project/src/main/scala-2.12/Compatibility.scala
new file mode 100644
index 000000000..19835e1be
--- /dev/null
+++ b/sbt-coursier/src/sbt-test/sbt-coursier/scala-sources-javadoc-jars/project/src/main/scala-2.12/Compatibility.scala
@@ -0,0 +1 @@
+object Compatibility
diff --git a/sbt-shading/src/sbt-test/sbt-shading-0.13/cross-project-shading/project/plugins.sbt b/sbt-shading/src/sbt-test/sbt-shading-0.13/cross-project-shading/project/plugins.sbt
index fc3a48bf6..046224961 100644
--- a/sbt-shading/src/sbt-test/sbt-shading-0.13/cross-project-shading/project/plugins.sbt
+++ b/sbt-shading/src/sbt-test/sbt-shading-0.13/cross-project-shading/project/plugins.sbt
@@ -10,24 +10,4 @@
   addSbtPlugin("io.get-coursier" % "sbt-shading" % pluginVersion)
 }
 
-// for the locally publish jarjar
-resolvers += Resolver.mavenLocal
-
-val coursierJarjarVersion = "1.0.1-coursier-SNAPSHOT"
-
-def coursierJarjarFoundInM2 =
-  (file(sys.props("user.home")) / s".m2/repository/org/anarres/jarjar/jarjar-core/$coursierJarjarVersion").exists()
-
-def jarjarVersion =
-  if (coursierJarjarFoundInM2)
-    coursierJarjarVersion
-  else
-    sys.error(
-      "Ad hoc jarjar version not found. Run\n" +
-      "  git clone https://github.com/alexarchambault/jarjar.git && cd jarjar && git checkout 249c8dbb970f8 && ./gradlew install\n" +
-      "to run this test"
-    )
-
-libraryDependencies += "org.anarres.jarjar" % "jarjar-core" % jarjarVersion
-
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "0.6.13")
diff --git a/sbt-shading/src/sbt-test/sbt-shading/exclude-dependencies/project/plugins.sbt b/sbt-shading/src/sbt-test/sbt-shading/exclude-dependencies/project/plugins.sbt
index 8f83e814d..022e99e06 100644
--- a/sbt-shading/src/sbt-test/sbt-shading/exclude-dependencies/project/plugins.sbt
+++ b/sbt-shading/src/sbt-test/sbt-shading/exclude-dependencies/project/plugins.sbt
@@ -9,23 +9,3 @@
 
   addSbtPlugin("io.get-coursier" % "sbt-shading" % pluginVersion)
 }
-
-// for the locally publish jarjar
-resolvers += Resolver.mavenLocal
-
-val coursierJarjarVersion = "1.0.1-coursier-SNAPSHOT"
-
-def coursierJarjarFoundInM2 =
-  (file(sys.props("user.home")) / s".m2/repository/org/anarres/jarjar/jarjar-core/$coursierJarjarVersion").exists()
-
-def jarjarVersion =
-  if (coursierJarjarFoundInM2)
-    coursierJarjarVersion
-  else
-    sys.error(
-      "Ad hoc jarjar version not found. Run\n" +
-      "  git clone https://github.com/alexarchambault/jarjar.git && cd jarjar && git checkout 249c8dbb970f8 && ./gradlew install\n" +
-      "to run this test"
-    )
-
-libraryDependencies += "org.anarres.jarjar" % "jarjar-core" % jarjarVersion
diff --git a/sbt-shading/src/sbt-test/sbt-shading/shade-namespace/project/plugins.sbt b/sbt-shading/src/sbt-test/sbt-shading/shade-namespace/project/plugins.sbt
index 8f83e814d..022e99e06 100644
--- a/sbt-shading/src/sbt-test/sbt-shading/shade-namespace/project/plugins.sbt
+++ b/sbt-shading/src/sbt-test/sbt-shading/shade-namespace/project/plugins.sbt
@@ -9,23 +9,3 @@
 
   addSbtPlugin("io.get-coursier" % "sbt-shading" % pluginVersion)
 }
-
-// for the locally publish jarjar
-resolvers += Resolver.mavenLocal
-
-val coursierJarjarVersion = "1.0.1-coursier-SNAPSHOT"
-
-def coursierJarjarFoundInM2 =
-  (file(sys.props("user.home")) / s".m2/repository/org/anarres/jarjar/jarjar-core/$coursierJarjarVersion").exists()
-
-def jarjarVersion =
-  if (coursierJarjarFoundInM2)
-    coursierJarjarVersion
-  else
-    sys.error(
-      "Ad hoc jarjar version not found. Run\n" +
-      "  git clone https://github.com/alexarchambault/jarjar.git && cd jarjar && git checkout 249c8dbb970f8 && ./gradlew install\n" +
-      "to run this test"
-    )
-
-libraryDependencies += "org.anarres.jarjar" % "jarjar-core" % jarjarVersion
diff --git a/sbt-shading/src/sbt-test/sbt-shading/shading/project/plugins.sbt b/sbt-shading/src/sbt-test/sbt-shading/shading/project/plugins.sbt
index 8f83e814d..022e99e06 100644
--- a/sbt-shading/src/sbt-test/sbt-shading/shading/project/plugins.sbt
+++ b/sbt-shading/src/sbt-test/sbt-shading/shading/project/plugins.sbt
@@ -9,23 +9,3 @@
 
   addSbtPlugin("io.get-coursier" % "sbt-shading" % pluginVersion)
 }
-
-// for the locally publish jarjar
-resolvers += Resolver.mavenLocal
-
-val coursierJarjarVersion = "1.0.1-coursier-SNAPSHOT"
-
-def coursierJarjarFoundInM2 =
-  (file(sys.props("user.home")) / s".m2/repository/org/anarres/jarjar/jarjar-core/$coursierJarjarVersion").exists()
-
-def jarjarVersion =
-  if (coursierJarjarFoundInM2)
-    coursierJarjarVersion
-  else
-    sys.error(
-      "Ad hoc jarjar version not found. Run\n" +
-      "  git clone https://github.com/alexarchambault/jarjar.git && cd jarjar && git checkout 249c8dbb970f8 && ./gradlew install\n" +
-      "to run this test"
-    )
-
-libraryDependencies += "org.anarres.jarjar" % "jarjar-core" % jarjarVersion
diff --git a/sbt-shading/src/sbt-test/sbt-shading/transitive-shading/project/plugins.sbt b/sbt-shading/src/sbt-test/sbt-shading/transitive-shading/project/plugins.sbt
index 8f83e814d..022e99e06 100644
--- a/sbt-shading/src/sbt-test/sbt-shading/transitive-shading/project/plugins.sbt
+++ b/sbt-shading/src/sbt-test/sbt-shading/transitive-shading/project/plugins.sbt
@@ -9,23 +9,3 @@
 
   addSbtPlugin("io.get-coursier" % "sbt-shading" % pluginVersion)
 }
-
-// for the locally publish jarjar
-resolvers += Resolver.mavenLocal
-
-val coursierJarjarVersion = "1.0.1-coursier-SNAPSHOT"
-
-def coursierJarjarFoundInM2 =
-  (file(sys.props("user.home")) / s".m2/repository/org/anarres/jarjar/jarjar-core/$coursierJarjarVersion").exists()
-
-def jarjarVersion =
-  if (coursierJarjarFoundInM2)
-    coursierJarjarVersion
-  else
-    sys.error(
-      "Ad hoc jarjar version not found. Run\n" +
-      "  git clone https://github.com/alexarchambault/jarjar.git && cd jarjar && git checkout 249c8dbb970f8 && ./gradlew install\n" +
-      "to run this test"
-    )
-
-libraryDependencies += "org.anarres.jarjar" % "jarjar-core" % jarjarVersion