Update base version to 3.4.1-RC1

Now we can check MiMa against 3.4.0-RC1 to ensure that the API has not changed.
Though that version has a couple of mistakes that will be fixed in 3.4.0-RC2.

Author: nicolasstucki

project/Build.scala

@@ -85,7 +85,7 @@ object Build {
 
   val referenceVersion = "3.3.1"
 
-  val baseVersion = "3.4.0-RC1"
+  val baseVersion = "3.4.1-RC1"
 
   // Versions used by the vscode extension to create a new project
   // This should be the latest published releases.
@@ -101,7 +101,7 @@ object Build {
    *  set to 3.1.3. If it is going to be 3.1.0, it must be set to the latest
    *  3.0.x release.
    */
-  val previousDottyVersion = "3.3.1"
+  val previousDottyVersion = "3.4.0-RC1"
 
   object CompatMode {
     final val BinaryCompatible = 0

project/MiMaFilters.scala

@@ -3,18 +3,17 @@ import com.typesafe.tools.mima.core._
 
 object MiMaFilters {
   val Library: Seq[ProblemFilter] = Seq(
-    // New API in 3.4.X
-    ProblemFilters.exclude[ReversedMissingMethodProblem]("scala.quoted.Quotes#reflectModule#FlagsModule.AbsOverride"),
-    ProblemFilters.exclude[ReversedMissingMethodProblem]("scala.quoted.Quotes#reflectModule.ValOrDefDefTypeTest"),
-    ProblemFilters.exclude[ReversedMissingMethodProblem]("scala.quoted.Quotes#reflectModule.ValOrDefDefMethods"),
-    ProblemFilters.exclude[ReversedMissingMethodProblem]("scala.quoted.Quotes#reflectModule#defnModule.FunctionClass"),
-    ProblemFilters.exclude[ReversedMissingMethodProblem]("scala.quoted.Quotes#reflectModule#defnModule.PolyFunctionClass"),
-    ProblemFilters.exclude[ReversedMissingMethodProblem]("scala.quoted.Quotes#reflectModule#TypeReprMethods.dealiasKeepOpaques"),
-    ProblemFilters.exclude[ReversedMissingMethodProblem]("scala.quoted.Quotes#reflectModule#SymbolMethods.paramVariance"),
-    ProblemFilters.exclude[ReversedMissingMethodProblem]("scala.quoted.Quotes#reflectModule#TypeLambdaMethods.paramVariances"),
+    // This language feature was in 3.4.0-RC1 but will be removed in 3.4.0-RC2
+    ProblemFilters.exclude[MissingFieldProblem]("scala.runtime.stdLibPatches.language#deprecated.ascriptionVarargsUnpacking"),
+    ProblemFilters.exclude[MissingClassProblem]("scala.runtime.stdLibPatches.language$deprecated$ascriptionVarargsUnpacking$"),
+
+    // This language feature is not in 3.4.0-RC1 but will be added in 3.4.0-RC2
+    ProblemFilters.exclude[MissingFieldProblem]("scala.runtime.stdLibPatches.language.3.5-migration"),
+    ProblemFilters.exclude[MissingFieldProblem]("scala.runtime.stdLibPatches.language.3.5"),
+    ProblemFilters.exclude[MissingClassProblem]("scala.runtime.stdLibPatches.language$3$u002E5$"),
+    ProblemFilters.exclude[MissingClassProblem]("scala.runtime.stdLibPatches.language$3$u002E5$minusmigration$"),
   )
   val TastyCore: Seq[ProblemFilter] = Seq(
-    ProblemFilters.exclude[DirectMissingMethodProblem]("dotty.tools.tasty.TastyFormat.EXPLICITtpt"),
   )
   val Interfaces: Seq[ProblemFilter] = Seq(
   )