Add and configure sbt-wartremover

build.sbt

@@ -18,8 +18,8 @@ addSbtPlugin("com.dwijnand"       % "sbt-dynver"   % "3.0.0")
 addSbtPlugin("com.dwijnand"       % "sbt-travisci" % "1.1.1")
 addSbtPlugin("com.geirsson"       % "sbt-scalafmt" % "1.6.0-RC3")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh"      % "0.3.3")
+addSbtPlugin("org.wartremover"    % "sbt-wartremover" % "2.2.1")
 
 
 scalafmtOnCompile := true
 scalafmtConfig := Some(baseDirectory.value / "src" / "main" / "resources" / "scalafmt.conf")
-

project/plugins.sbt

@@ -1,2 +1,3 @@
 libraryDependencies += { "org.scala-sbt" %% "scripted-plugin" % sbtVersion.value }
 addSbtPlugin("com.geirsson"       % "sbt-scalafmt" % "1.6.0-RC3")
+addSbtPlugin("org.wartremover" % "sbt-wartremover" % "2.2.1")

src/main/scala/ScalazPlugin.scala

@@ -4,12 +4,13 @@ import sbt._
 import Keys._
 import de.heikoseeberger.sbtheader.HeaderPlugin
 import org.scalafmt.sbt.ScalafmtPlugin
+import wartremover.WartRemover
 
 object ScalazPlugin extends AutoPlugin {
 
   override def trigger = allRequirements
 
-  override def requires = HeaderPlugin && ScalafmtPlugin
+  override def requires = HeaderPlugin && ScalafmtPlugin && WartRemover
 
   override def buildSettings =
     Compilation.buildSettings ++
@@ -25,5 +26,5 @@ object ScalazPlugin extends AutoPlugin {
       )
 
   override def projectSettings =
-    Compilation.projectSettings
+    Compilation.projectSettings ++ WartRemoverSettings.buildSettings
 }

src/main/scala/WartRemoverSettings.scala

@@ -0,0 +1,12 @@
+package scalaz.build
+import sbt.Keys._
+import sbt._
+import wartremover.WartRemover.autoImport.wartremoverErrors
+import wartremover.Wart
+
+object WartRemoverSettings {
+
+  val buildSettings = Seq(
+    wartremoverErrors in (Compile, compile) += Wart.Nothing
+  )
+}

src/sbt-test/scalaz-sbt/wartremover/project/build.properties

@@ -0,0 +1 @@
+sbt.version=1.1.6

src/sbt-test/scalaz-sbt/wartremover/project/test.sbt

@@ -0,0 +1,6 @@
+val pluginVersion =
+  sys.props
+    .get("plugin.version")
+    .getOrElse(sys.error("Sys prop plugin.version must be defined!"))
+
+addSbtPlugin("org.scalaz" % "scalaz-sbt" % pluginVersion)

src/sbt-test/scalaz-sbt/wartremover/src/main/scala/Test.scala

@@ -0,0 +1,3 @@
+object Test {
+  def foo(a: String, b: Int): String = b + a
+}

src/sbt-test/scalaz-sbt/wartremover/test

@@ -0,0 +1,4 @@
+# Verify that the sbt-wartremover plugin is correctly activated
+
+> clean
+-> compile

src/sbt-test/scalaz-sbt/wartremover/test.sbt

@@ -0,0 +1,6 @@
+lazy val app = project
+  .in(file("."))
+  .settings(
+    name := "wartremover",
+    wartremoverErrors in (Compile, compile) ++= Warts.all
+  ).enablePlugins(ScalazPlugin)