run scalafix on Scala 3 sources

.scalafix.conf → .scalafix-scala2.conf

@@ -9,7 +9,7 @@ ExplicitResultTypes {
 OrganizeImports {
  groupedImports = Explode
  expandRelative = true
- removeUnused = true # done already by RemoveUnused rule
+ removeUnused = true
  groups = [
  "re:javax?\\."
  "scala."

.scalafix-scala3.conf

@@ -0,0 +1,15 @@
+rules = [
+ OrganizeImports
+]
+
+OrganizeImports {
+ groupedImports = Explode
+ expandRelative = true
+ removeUnused = false
+ groups = [
+ "re:javax?\\."
+ "scala."
+ "scala.meta."
+ "*"
+ ]
+}

project/ScalafixBuild.scala

@@ -179,6 +179,7 @@ object ScalafixBuild extends AutoPlugin with GhpagesKeys {
  import autoImport._
 
  override def globalSettings: Seq[Def.Setting[_]] = List(
+ excludeLintKeys += scalafixConfig, // defined on projects where ScalafixPlugin is disabled
  stableVersion := (ThisBuild / version).value.replaceFirst("\\+.*", ""),
  resolvers ++=
  Resolver.sonatypeOssRepos("snapshots") ++
@@ -330,16 +331,23 @@ object ScalafixBuild extends AutoPlugin with GhpagesKeys {
 
  private def configSettings: Seq[Def.Setting[_]] = List(
  // Workaround for https://github.com/scalacenter/scalafix/issues/1592:
- // effectively skip scalafix[All] if the scala binary version of the project
- // does not match the scalafix one (which cannot be per-project as it must be
- // defined on ThisBuild)
+ // effectively skip scalafix[All] on 2.x projects not matching scalafixScalaBinaryVersion
  scalafix / unmanagedSources := {
  val prev = (scalafix / unmanagedSources).value
- if (scalaBinaryVersion.value == scalafixScalaBinaryVersion.value) {
+ if (
+ Seq(scalafixScalaBinaryVersion.value, "3")
+ .contains(scalaBinaryVersion.value)
+ ) {
  prev
  } else {
  Seq()
  }
+ },
+ scalafixConfig := {
+ if (scalaBinaryVersion.value.startsWith("2"))
+ Some(file(".scalafix-scala2.conf"))
+ else
+ Some(file(".scalafix-scala3.conf"))
  }
  )
 

scalafix-core/src/main/scala-3/scalafix/util/CompatSemanticdbType.scala

@@ -1,7 +1,7 @@
 package scalafix.util
 
-import scala.meta.internal.semanticdb.XtensionSemanticdbType
 import scala.meta.internal.semanticdb.XtensionSemanticdbScope
+import scala.meta.internal.semanticdb.XtensionSemanticdbType
 
 object CompatSemanticdbType {
  type SemanticdbType = XtensionSemanticdbType

scalafix-reflect/src/main/scala-3/scalafix/internal/reflect/RuleCompiler.scala

@@ -1,24 +1,23 @@
 package scalafix.internal.reflect
 
+import java.io.File
+
 import dotty.tools.dotc.Compiler
 import dotty.tools.dotc.Run
 import dotty.tools.dotc.core.Contexts.FreshContext
-import dotty.tools.dotc.util.SourceFile
-import dotty.tools.dotc.reporting.StoreReporter
 import dotty.tools.dotc.interactive.InteractiveDriver
+import dotty.tools.dotc.reporting.StoreReporter
+import dotty.tools.dotc.util.SourceFile
 import dotty.tools.io.AbstractFile
 import dotty.tools.io.Directory
 import dotty.tools.io.PlainDirectory
-import dotty.tools.io.VirtualFile
 import dotty.tools.io.VirtualDirectory
+import dotty.tools.io.VirtualFile
 import dotty.tools.repl.AbstractFileClassLoader
-
+import metaconfig.ConfError
 import metaconfig.Configured
 import metaconfig.Input
-import metaconfig.ConfError
 import metaconfig.Position
-
-import java.io.File
 class RuleCompiler(
  classpath: String,
  targetDirectory: Option[File] = None

scalafix-rules/src/main/scala/scalafix/internal/rule/OrganizeImports.scala

@@ -33,9 +33,7 @@ import metaconfig.ConfOps
 import metaconfig.Configured
 import metaconfig.internal.ConfGet
 import scalafix.internal.config.ScalaVersion
-import scalafix.internal.rule.ImportMatcher.*
-import scalafix.internal.rule.ImportMatcher.---
-import scalafix.internal.rule.ImportMatcher.parse
+import scalafix.internal.rule.ImportMatcher._
 import scalafix.lint.Diagnostic
 import scalafix.patch.Patch
 import scalafix.v1.Configuration

scalafix-tests/integration/src/test/scala-3/scalafix/tests/util/compat/CompatSemanticdb.scala

@@ -1,6 +1,7 @@
 package scalafix.tests.util.compat
 
 import java.nio.file.Path
+
 import dotty.tools.dotc.Main
 
 object CompatSemanticdb {