Support updating .config/mill-version

Author: lefou

modules/core/src/main/scala/org/scalasteward/core/buildtool/mill/MillAlg.scala

@@ -71,7 +71,12 @@ final class MillAlg[F[_]](implicit
   private def getMillVersion(buildRootDir: File): F[Option[Version]] =
     for {
       millVersionFileContent <- fileAlg.readFile(buildRootDir / millVersionName)
-      version = millVersionFileContent.flatMap(parser.parseMillVersion)
+      millVersionFileInConfigContent <- fileAlg.readFile(
+        buildRootDir / ".config" / millVersionNameInConfig
+      )
+      version = millVersionFileContent
+        .orElse(millVersionFileInConfigContent)
+        .flatMap(parser.parseMillVersion)
     } yield version
 
   private def getMillPluginDeps(
@@ -119,4 +124,5 @@ object MillAlg {
       update.artifactIds.exists(_.name === millMainArtifactId.name)
 
   val millVersionName = ".mill-version"
+  val millVersionNameInConfig = "mill-version"
 }

modules/core/src/main/scala/org/scalasteward/core/edit/update/Selector.scala

@@ -19,7 +19,7 @@ package org.scalasteward.core.edit.update
 import cats.Foldable
 import cats.syntax.all._
 import java.util.regex.Pattern
-import org.scalasteward.core.buildtool.mill.MillAlg.{isMillMainUpdate, millVersionName}
+import org.scalasteward.core.buildtool.mill.MillAlg
 import org.scalasteward.core.buildtool.sbt.{buildPropertiesName, isSbtUpdate}
 import org.scalasteward.core.data.{Dependency, Update}
 import org.scalasteward.core.edit.update.data.VersionPosition._
@@ -169,8 +169,11 @@ object Selector {
       update: Update.Single,
       versionPositions: List[VersionPosition]
   ): List[VersionPosition] =
-    if (isMillMainUpdate(update))
-      versionPositions.filter(_.version.path.endsWith(millVersionName))
+    if (MillAlg.isMillMainUpdate(update))
+      versionPositions.filter(f =>
+        f.version.path.endsWith(MillAlg.millVersionName) ||
+          f.version.path.endsWith(MillAlg.millVersionNameInConfig)
+      )
     else List.empty
 
   private def sbtVersionPositions(

modules/core/src/main/scala/org/scalasteward/core/repoconfig/UpdatesConfig.scala

@@ -24,10 +24,10 @@ import io.circe.generic.extras.semiauto._
 import io.circe.refined._
 import io.circe.{Codec, Decoder}
 import org.scalasteward.core.buildtool.maven.pomXmlName
-import org.scalasteward.core.buildtool.mill.MillAlg.millVersionName
+import org.scalasteward.core.buildtool.mill.MillAlg
 import org.scalasteward.core.buildtool.sbt.buildPropertiesName
 import org.scalasteward.core.data.{GroupId, Update}
-import org.scalasteward.core.scalafmt.scalafmtConfName
+import org.scalasteward.core.scalafmt
 import org.scalasteward.core.update.FilterAlg.{
   FilterResult,
   IgnoredByConfig,
@@ -90,12 +90,13 @@ final case class UpdatesConfig(
 object UpdatesConfig {
   private val defaultFileExtensions: Set[String] =
     Set(
-      millVersionName,
+      MillAlg.millVersionName,
+      MillAlg.millVersionNameInConfig,
       ".sbt",
       ".sbt.shared",
       ".sc",
       ".scala",
-      scalafmtConfName,
+      scalafmt.scalafmtConfName,
       ".yml",
       buildPropertiesName,
       pomXmlName