Setup Scalafix

build.sbt

@@ -13,8 +13,7 @@ lazy val root = project
     test / watchBeforeCommand := Watch.clearScreen,
     Global / onChangedBuildSource := ReloadOnSourceChanges,
     Global / cancelable := true,
-
-    libraryDependencies += "org.scalameta" %% "munit" % "0.7.29" % Test,
+    semanticdbEnabled := true,
 
     scalacOptions ++= Seq(
       "-encoding", "utf8",
@@ -24,6 +23,15 @@ lazy val root = project
       "-Ysafe-init",
       ),
 
+    libraryDependencies += "org.scalameta" %% "munit" % "0.7.29" % Test,
+
+    scalafixConfig := Some(file("project/scalafix.conf")),
+    ThisBuild / scalafixDependencies ++= Seq(
+      "io.github.ghostbuster91.scalafix-unified" %% "unified" % "0.0.8",
+      "com.github.xuwei-k" %% "scalafix-rules" % "0.3.1",
+      "net.pixiv" %% "scalafix-pixiv-rule" % "4.5.3",
+    ),
+
     wartremoverErrors ++= Warts.unsafe.filterNot(Set(
       Wart.Var, Wart.Any
     ).contains),

project/plugins.sbt

@@ -1,2 +1,3 @@
 addSbtPlugin("org.wartremover" % "sbt-wartremover" % "3.1.5")
 addSbtPlugin("org.wartremover" % "sbt-wartremover-contrib" % "2.1.0")
+addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.11.1")

project/scalafix.conf

@@ -0,0 +1,100 @@
+rules = [
+  NoAutoTupling,
+  OrganizeImports,
+  DisableSyntax,
+  LeakingImplicitClassVal,
+  NoValInForComprehension,
+  RedundantSyntax,
+  # pixiv/scalafix-pixiv-rule
+  UnnecessarySemicolon,
+  ZeroIndexToHead,
+  CheckIsEmpty,
+  NonCaseException,
+  SingleConditionMatch,
+  NeedMessageExtendsRuntimeException,
+  NamingConventionPackage,
+  PackageJavaxToJakarta,
+  # ghostbuster91/scalafix-unified
+  EmptyCollectionsUnified,
+  # xuwei-k/scalafix-rules
+  AddExplicitImplicitTypes
+  AddLambdaParamParentheses
+  CirceCodec
+  CollectHeadOption
+  CollectHead
+  CompareSameValue
+  DirectoryAndPackageName
+  DuplicateWildcardImport
+  EitherFold
+  EitherGetOrElse
+  EitherMap
+  EtaExpand
+  ExplicitImplicitTypes
+  ExtendsProductWithSerializable
+  FileNameConsistent
+  FilterNot
+  FilterSize
+  FinalObjectWarn
+  FlatMapCollect
+  FlatTraverse
+  GroupMap
+  ImplicitValueClass
+  IncorrectScaladocParam
+  InterpolationToString
+  InterpolationToStringWarn
+  IsEmptyNonEmpty
+  JavaURLConstructorsWarn
+  KeySet
+  KindProjector
+  LambdaParamParentheses
+  LazyZip
+  MapDistinctSize
+  MapFlattenFlatMap
+  MapSequenceTraverse
+  MapToForeach
+  NamedParamOrder
+  ObjectSelfType
+  OptionContains
+  OptionFilter
+  OptionForallExists
+  OptionGetOrElse
+  OptionGetWarn
+  OptionMapFlatMap
+  OptionMatchToRight
+  OptionOrElse
+  OptionWhenUnless
+  PartialFunctionCondOpt
+  RedundantCaseClassVal
+  RemoveEmptyObject
+  RemoveIf
+  RemovePureEff
+  RemoveSamePackageImport
+  RemoveStringInterpolation
+  RemoveUselessParamComments
+  ReplaceFill
+  ReplacePlaceholder
+  ReplaceSymbolLiterals
+  ReuseInstances
+  SameParamOverloading
+  Scala3ImportRewrite
+  Scala3ImportWarn
+  Scala3Placeholder
+  ScalaApp
+  ScalazEitherInfix
+  SimplifyForYield
+  SizeToLength
+  SlickFilter
+  StringFormatToInterpolation
+  SyntacticOrganizeImports
+  ThrowableToNonFatal
+  UnnecessaryCase
+  UnnecessaryMatch
+  UnnecessarySortRewrite
+  UnnecessarySort
+  UnusedConstructorParams
+  UnusedTypeParams
+  UselessParamCommentsWarn
+  WithFilter  
+]
+
+OrganizeImports.removeUnused = false,