diff --git a/build.sbt b/build.sbt
index 38acf8a27..b1250ac0b 100644
--- a/build.sbt
+++ b/build.sbt
@@ -141,6 +141,14 @@ def mimaSettingsSince(versions: Seq[String]): Seq[Def.Setting[?]] = Def settings
   ),
 )
 
+val contrabandSettings: Seq[Def.Setting[?]] = Seq(
+  Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
+  Compile / managedSourceDirectories +=
+    baseDirectory.value / "src" / "main" / "contraband-scala",
+  Compile / generateContrabands / contrabandScala3enum := false,
+  Compile / generateContrabands / contrabandFormatsForType := DatatypeConfig.getFormats,
+)
+
 val scriptedSbtMimaSettings = Def.settings(mimaPreviousArtifacts := Set())
 
 lazy val sbtRoot: Project = (project in file("."))
@@ -315,10 +323,7 @@ lazy val utilLogging = project
         sjsonNewScalaJson.value,
       ),
     testDependencies,
-    Compile / generateContrabands / contrabandCodecsDependencies := List(sjsonNewCore.value),
-    Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / managedSourceDirectories +=
-      baseDirectory.value / "src" / "main" / "contraband-scala",
+    contrabandSettings,
     Compile / generateContrabands / contrabandFormatsForType := { tpe =>
       val old = (Compile / generateContrabands / contrabandFormatsForType).value
       val name = tpe.removeTypeParameters.name
@@ -358,10 +363,7 @@ lazy val utilCache = project
         sjsonNewScalaJson.value,
         sjsonNewMurmurhash.value
       ),
-    Compile / managedSourceDirectories +=
-      baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / contrabandFormatsForType := ContrabandConfig.getFormats,
+    contrabandSettings,
     mimaSettings,
     mimaBinaryIssueFilters ++= Seq(
     ),
@@ -411,10 +413,7 @@ lazy val testingProj = (project in file("testing"))
       sjsonNewCore.value,
     ),
     conflictWarning := ConflictWarning.disable,
-    Compile / managedSourceDirectories +=
-      baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / contrabandFormatsForType := ContrabandConfig.getFormats,
+    contrabandSettings,
     mimaSettings,
     mimaBinaryIssueFilters ++= Vector(
     ),
@@ -476,9 +475,7 @@ lazy val runProj = (project in file("run"))
   .settings(
     testedBaseSettings,
     name := "Run",
-    Compile / managedSourceDirectories +=
-      baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
+    contrabandSettings,
     mimaSettings,
     mimaBinaryIssueFilters ++= Seq(
     )
@@ -537,10 +534,7 @@ lazy val actionsProj = (project in file("main-actions"))
     name := "Actions",
     libraryDependencies += sjsonNewScalaJson.value,
     libraryDependencies ++= Seq(gigahorseApacheHttp, jline3Terminal),
-    Compile / managedSourceDirectories +=
-      baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / contrabandFormatsForType := ContrabandConfig.getFormats,
+    contrabandSettings,
     // Test / fork := true,
     Test / classLoaderLayeringStrategy := ClassLoaderLayeringStrategy.Flat,
     mimaSettings,
@@ -564,10 +558,7 @@ lazy val protocolProj = (project in file("protocol"))
     name := "Protocol",
     libraryDependencies ++= Seq(sjsonNewScalaJson.value, sjsonNewCore.value, ipcSocket),
     Compile / scalacOptions += "-source:3.7",
-    Compile / managedSourceDirectories +=
-      baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / contrabandFormatsForType := ContrabandConfig.getFormats,
+    contrabandSettings,
     mimaSettings,
     mimaBinaryIssueFilters ++= Seq(
     )
@@ -586,10 +577,7 @@ lazy val commandProj = (project in file("main-command"))
       sjsonNewScalaJson.value,
       templateResolverApi
     ),
-    Compile / managedSourceDirectories +=
-      baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / contrabandFormatsForType := ContrabandConfig.getFormats,
+    contrabandSettings,
     mimaSettings,
     mimaBinaryIssueFilters ++= Vector(
     ),
@@ -713,9 +701,7 @@ lazy val mainProj = (project in file("main"))
       case v if v.startsWith("2.12.") => List()
       case _                          => List(scalaPar)
     }),
-    Compile / managedSourceDirectories +=
-      baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
+    contrabandSettings,
     Test / testOptions += Tests
       .Argument(TestFrameworks.ScalaCheck, "-minSuccessfulTests", "1000"),
     SettingKey[Boolean]("usePipelining") := false,
@@ -1142,10 +1128,7 @@ lazy val lmCore = (project in file("lm-core"))
       case v if v.startsWith("2.12.") => List("-Ywarn-unused:-locals,-explicits,-privates")
       case _                          => List()
     }),
-    Compile / managedSourceDirectories +=
-      baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / contrabandFormatsForType := DatatypeConfig.getFormats,
+    contrabandSettings,
     // WORKAROUND sbt/sbt#2205 include managed sources in packageSrc
     Compile / packageSrc / mappings ++= {
       val srcs = (Compile / managedSources).value
@@ -1177,10 +1160,7 @@ lazy val lmIvy = (project in file("lm-ivy"))
       scalacheck % Test,
       scalaVerify % Test,
     ),
-    Compile / managedSourceDirectories +=
-      baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / sourceManaged := baseDirectory.value / "src" / "main" / "contraband-scala",
-    Compile / generateContrabands / contrabandFormatsForType := DatatypeConfig.getFormats,
+    contrabandSettings,
     Test / classLoaderLayeringStrategy := ClassLoaderLayeringStrategy.Flat,
     mimaSettings,
   )
diff --git a/project/ContrabandConfig.scala b/project/ContrabandConfig.scala
deleted file mode 100644
index 2fa3aa170..000000000
--- a/project/ContrabandConfig.scala
+++ /dev/null
@@ -1,53 +0,0 @@
-import sbt.contraband.ast.*
-import sbt.contraband.CodecCodeGen
-
-object ContrabandConfig {
-
-  /** Extract the only type parameter from a TpeRef */
-  def oneArg(tpe: Type): Type = {
-    val pat = s"""${tpe.removeTypeParameters.name}[<\\[](.+?)[>\\]]""".r
-    val pat(arg0) = tpe.name
-    NamedType(arg0 split '.' toList)
-  }
-
-  /** Extract the two type parameters from a TpeRef */
-  def twoArgs(tpe: Type): List[Type] = {
-    val pat = s"""${tpe.removeTypeParameters.name}[<\\[](.+?), (.+?)[>\\]]""".r
-    val pat(arg0, arg1) = tpe.name
-    NamedType(arg0 split '.' toList) :: NamedType(arg1 split '.' toList) :: Nil
-  }
-
-  /** Codecs that were manually written. */
-  val myCodecs: PartialFunction[String, Type => List[String]] = {
-    // TODO: These are handled by BasicJsonProtocol, and sbt-contraband should handle them by default, imo
-    case "Option" | "Set" | "scala.Vector" => { tpe =>
-      getFormats(oneArg(tpe))
-    }
-    case "Map" | "Tuple2" | "scala.Tuple2" => { tpe =>
-      twoArgs(tpe).flatMap(getFormats)
-    }
-    case "Int" | "Long" => { _ =>
-      Nil
-    }
-    case "sbt.testing.Status" => { _ =>
-      "sbt.internal.testing.StatusFormats" :: Nil
-    }
-    case "scalajson.ast.unsafe.JValue" | "sjsonnew.shaded.scalajson.ast.unsafe.JValue" => { _ =>
-      "sbt.internal.util.codec.JValueFormats" :: Nil
-    }
-    case "xsbti.HashedVirtualFileRef" => { _ =>
-      "sbt.internal.util.codec.HashedVirtualFileRefFormats" :: Nil
-    }
-    case "java.nio.ByteBuffer" => { _ =>
-      "sbt.internal.util.codec.ByteBufferFormats" :: Nil
-    }
-  }
-
-  /** Returns the list of formats required to encode the given `TpeRef`. */
-  val getFormats: Type => List[String] =
-    CodecCodeGen.extensibleFormatsForType {
-      case tpe: Type if myCodecs isDefinedAt tpe.removeTypeParameters.name =>
-        myCodecs(tpe.removeTypeParameters.name)(tpe)
-      case other => CodecCodeGen.formatsForType(other)
-    }
-}
diff --git a/project/DatatypeConfig.scala b/project/DatatypeConfig.scala
index ed21a8520..6327fdd27 100644
--- a/project/DatatypeConfig.scala
+++ b/project/DatatypeConfig.scala
@@ -62,6 +62,22 @@ object DatatypeConfig {
       "sbt.librarymanagement.ConfigRefFormats" :: Nil
     }
 
+    case "sbt.testing.Status" => { _ =>
+      "sbt.internal.testing.StatusFormats" :: Nil
+    }
+
+    case "scalajson.ast.unsafe.JValue" | "sjsonnew.shaded.scalajson.ast.unsafe.JValue" => { _ =>
+      "sbt.internal.util.codec.JValueFormats" :: Nil
+    }
+
+    case "xsbti.HashedVirtualFileRef" => { _ =>
+      "sbt.internal.util.codec.HashedVirtualFileRefFormats" :: Nil
+    }
+
+    case "java.nio.ByteBuffer" => { _ =>
+      "sbt.internal.util.codec.ByteBufferFormats" :: Nil
+    }
+
     // TODO: These are handled by BasicJsonProtocol, and sbt-datatype should handle them by default, imo
     case "Option" | "Set" | "scala.Vector" => { tpe =>
       getFormats(oneArg(tpe))