chore: Scalafmt upgrade

.scalafmt.conf

@@ -1,52 +1,104 @@
-version = 2.1.0
-
-style = defaultWithAlign
-
-docstrings                 = JavaDoc
-indentOperator             = spray
-maxColumn                  = 120
-lineEndings                = preserve
-rewrite.rules              = [RedundantParens, SortImports, AvoidInfix]
-unindentTopLevelOperators  = true
-align.tokens               = [{code = "=>", owner = "Case"}]
-align.openParenDefnSite    = false
-align.openParenCallSite    = false
-optIn.breakChainOnFirstMethodDot = false
-optIn.configStyleArguments = false
-danglingParentheses = false
+version = 3.7.4
+
+runner.dialect = scala213
+
+fileOverride {
+  "glob:**/scala-3*/**" {
+    runner.dialect = scala3
+  }
+}
+
+# Only format files tracked by git
+project.git = true
+
+# f/k/a style =
+preset = defaultWithAlign
+
+# f/k/a JavaDoc
+docstrings {
+  style = Asterisk
+  oneline = fold
+}
+
+indentOperator {
+  preset = akka
+
+  # f/f/k/a unindentTopLevelOperators  = true
+  # f/k/a topLevelOnly=false
+  exemptScope = all
+}
+
+maxColumn = 120
+lineEndings = preserve
+
+rewrite {
+  rules = [
+    AvoidInfix,
+    RedundantParens,
+    Imports
+  ]
+
+  neverInfix.excludeFilters = [
+    and
+    min
+    max
+    until
+    to
+    by
+    eq
+    ne
+    "should.*"
+    "contain.*"
+    "must.*"
+    in
+    ignore
+    be
+    taggedAs
+    thrownBy
+    synchronized
+    have
+    when
+    size
+    only
+    noneOf
+    oneElementOf
+    noElementsOf
+    atLeastOneElementOf
+    atMostOneElementOf
+    allElementsOf
+    inOrderElementsOf
+    theSameElementsAs
+    theSameElementsInOrderAs
+  ]
+
+  imports {
+    sort = original
+  }
+}
+
 spaces.inImportCurlyBraces = true
-rewrite.neverInfix.excludeFilters = [
-  and
-  min
-  max
-  until
-  to
-  by
-  eq
-  ne
-  "should.*"
-  "contain.*"
-  "must.*"
-  in
-  ignore
-  be
-  taggedAs
-  thrownBy
-  synchronized
-  have
-  when
-  size
-  only
-  noneOf
-  oneElementOf
-  noElementsOf
-  atLeastOneElementOf
-  atMostOneElementOf
-  allElementsOf
-  inOrderElementsOf
-  theSameElementsAs
-  theSameElementsInOrderAs
-]
+
+align {
+  tokens = [
+    { code = "=>", owner = "Case" }
+  ]
+  openParenCallSite = false
+  openParenDefnSite = false
+}
+
+optIn {
+  breakChainOnFirstMethodDot = false
+  encloseClassicChains = true
+  configStyleArguments = false
+}
+
+danglingParentheses {
+  defnSite = false
+  callSite = false
+  ctrlSite = false
+  tupleSite = false
+}
+
 rewriteTokens = {
   "⇒": "=>"
   "→": "->"

akka-actor/src/main/scala/akka/actor/dungeon/Dispatch.scala

@@ -35,8 +35,11 @@ final case class SerializationCheckFailedException private[dungeon] (msg: Object
 @InternalApi
 private[akka] trait Dispatch { this: ActorCell =>
 
+  // scalafmt breaks this by moving the _ to its own line which doesn't compile
+  // format: off
   @nowarn @volatile private var _mailboxDoNotCallMeDirectly
       : Mailbox = _ //This must be volatile since it isn't protected by the mailbox status
+  // format: on
 
   @nowarn private def _preventPrivateUnusedErasure = {
     _mailboxDoNotCallMeDirectly

project/plugins.sbt

@@ -5,7 +5,7 @@ libraryDependencies += Defaults.sbtPluginExtra(
 
 addSbtPlugin("com.lightbend.sbt" % "sbt-java-formatter" % "0.8.0")
 addSbtPlugin("com.lightbend.sbt" % "sbt-bill-of-materials" % "1.0.2")
-addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.2")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.6")
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.3")
 addSbtPlugin("com.github.sbt" % "sbt-unidoc" % "0.5.0")
 addSbtPlugin("com.thoughtworks.sbt-api-mappings" % "sbt-api-mappings" % "3.0.2")