fix: Use hidden project configuration for dependency management (#194)

Author: Johnnei

.scalafmt.conf

@@ -3,4 +3,3 @@ runner.dialect = scala212
 maxColumn = 120
 align.preset = none
 rewrite.trailingCommas.style = always
-

src/main/scala/com/sksamuel/scapegoat/sbt/ScapegoatSbtPlugin.scala

@@ -12,6 +12,7 @@ object ScapegoatSbtPlugin extends AutoPlugin {
 
   object autoImport {
     val Scapegoat = config("scapegoat") extend Compile
+    val ScapegoatDeps = (config("scapegoat-dep") extend Compile).hide
 
     lazy val scapegoat = taskKey[Unit]("Run scapegoat quality checks")
     lazy val scapegoatCleanTask = taskKey[Unit]("Conditionally clean the scapegoat output directories")
@@ -41,7 +42,7 @@ object ScapegoatSbtPlugin extends AutoPlugin {
     }
   }
 
-  override def projectConfigurations: Seq[Configuration] = Seq(Scapegoat)
+  override def projectConfigurations: Seq[Configuration] = Seq(ScapegoatDeps)
 
   override def trigger = allRequirements
 
@@ -69,7 +70,7 @@ object ScapegoatSbtPlugin extends AutoPlugin {
           unmanagedClasspath := (Compile / unmanagedClasspath).value,
           scalacOptions := {
             // find all deps for the compile scope
-            val scapegoatDependencies = (Scapegoat / update).value matching configurationFilter(Scapegoat.name)
+            val scapegoatDependencies = (ScapegoatDeps / update).value matching configurationFilter(ScapegoatDeps.name)
             // ensure we have the scapegoat dependency on the classpath and if so add it as a scalac plugin
             scapegoatDependencies.find(_.getAbsolutePath.contains(ArtifactId)) match {
               case None =>
@@ -149,7 +150,7 @@ object ScapegoatSbtPlugin extends AutoPlugin {
             case _ => "1.4.17"
           }
         }
-        crossVersion(GroupId %% ArtifactId % selectedScapegoatVersion) % Scapegoat
+        crossVersion(GroupId %% ArtifactId % selectedScapegoatVersion) % ScapegoatDeps
       },
     )
   }

src/sbt-test/artifacts/report-and-inclusion/build.sbt

@@ -1,7 +1,8 @@
 lazy val root = (project in file("."))
   .settings(
     name := "test-scapegoat-inclusion-in-pom",
-    ThisBuild / scalaVersion := "2.13.10",
+    libraryDependencies += "org.typelevel" %% "cats-core" % "2.12.0",
+    ThisBuild / scalaVersion := "2.13.14",
     TaskKey[Unit]("check") := {
       val pom = scala.xml.XML.loadFile(makePom.value)
       (pom \\ "dependencies").map(_ \ "dependency").find(dependency =>

src/sbt-test/artifacts/report-and-inclusion/src/main/scala/Boot.scala

@@ -1,6 +1,10 @@
+import cats.syntax.all._
+
 object Boot extends App {
 
-  println("Hello World")
+  // Depend on Cats to verify that dependencies are maintained
+  println("Hello " |+| " World")
+
   val ohno = Option(42).get
 
 }

src/sbt-test/artifacts/report-and-inclusion/test

@@ -1,5 +1,9 @@
-> compile
+> clean
 -> scapegoat
 $ exists target/scala-2.13/scapegoat-report/scapegoat.xml
+-$ exists target/scala-2.13/classes/Boot.class
+> clean
+> compile
 > makePom
+-$ exists target/scala-2.13/scapegoat-report/scapegoat.xml
 > check