fixup! upgrade scala3

Author: Karry

build.sbt

@@ -1,3 +1,7 @@
+import sbt.Keys.scalacOptions
+
+import scala.collection.Seq
+
 def pureconfig = libraryDependencies ++= {
   CrossVersion.partialVersion(scalaVersion.value) match {
     case Some((3, _)) =>
@@ -628,12 +632,23 @@ lazy val site = project
   .settings(BuildSettings.common)
   .settings(BuildSettings.microsite)
   .settings(
-    libraryDependencies += "org.scalameta" %% "mdoc" % "2.3.2" excludeAll (
+    libraryDependencies += "org.scalameta" %% "mdoc" % "2.5.2" excludeAll (
       ExclusionRule(organization = "org.slf4j"),
       ExclusionRule(organization = "org.scala-lang.modules", name = "scala-collection-compat_2.13")
     ),
     publish / skip := true,
-    scalacOptions := scalacOptions.value.filterNot(_ == "-Xfatal-warnings").filterNot(_ == "-Xlint:infer-any")
+    scalacOptions --= Seq(
+      "-Xfatal-warnings",
+      "-Xlint:infer-any",
+      "-Wvalue-discard",
+      "-Wnonunit-statement",
+      "-Wunused:implicits",
+      "-Wunused:explicits",
+      "-Wunused:imports",
+      "-Wunused:locals",
+      "-Wunused:params",
+      "-Wunused:privates"
+    )
   )
 
 lazy val sslConfig = project

pureconfig/src/main/scala/com/avast/sst/pureconfig/WithConfig.scala

@@ -3,7 +3,7 @@ package com.avast.sst.pureconfig
 import com.typesafe.config.Config
 import pureconfig.ConfigReader
 
-/** Used to retrieve both parsed configuration object and underlying [[Config]] instance. */
+/** Used to retrieve both parsed configuration object and underlying [[config]] instance. */
 final case class WithConfig[T](value: T, config: Config)
 
 object WithConfig {

pureconfig/src/test/scala-3/com/avast/sst/pureconfig/PureConfigModuleTest.scala

@@ -7,6 +7,9 @@ import pureconfig.error.ConfigReaderException
 import pureconfig.{ConfigReader, ConfigSource}
 import pureconfig.generic.derivation.default.*
 
+import scala.annotation.nowarn
+
+@nowarn("msg=unused value")
 class PureConfigModuleTest extends AnyFunSuite {
 
   private val source = ConfigSource.string("""|number = 123

pureconfig/src/test/scala-3/com/avast/sst/pureconfig/ToggleTest.scala

@@ -3,11 +3,12 @@ package com.avast.sst.pureconfig
 import cats.{Applicative, Eq, FlatMap, Functor, Monad, Monoid}
 import com.avast.sst.pureconfig.util.Toggle
 import com.avast.sst.pureconfig.util.Toggle.{Disabled, Enabled}
-import com.avast.sst.pureconfig.util.Toggle.TogglePureConfigInstances.*
-import com.typesafe.config.ConfigRenderOptions
 import org.scalatest.diagrams.Diagrams
 import org.scalatest.funsuite.AnyFunSuite
 
+import scala.annotation.nowarn
+
+@nowarn("msg=unused value")
 class ToggleTest extends AnyFunSuite with Diagrams {
 
   test("has Functor instance and map method works correctly") {