try to fix issue with sbt-assembly and duplicate classes

try assembly fix - take 2

Update build.sbt

try again

more sbt-assembly issues

scalafmt

try to fix gradle build

build.sbt

@@ -71,6 +71,10 @@ lazy val codegen = Project(id = "codegen", base = file("codegen"))
     (assembly / mainClass) := Some("org.apache.pekko.grpc.gen.Main"),
     (assembly / assemblyOption) := (assembly / assemblyOption).value.withPrependShellScript(
       Some(sbtassembly.AssemblyPlugin.defaultUniversalScript(shebang = true))),
+    (assembly / assemblyMergeStrategy) := {
+      case PathList("META-INF", _*) => MergeStrategy.discard
+      case _                        => MergeStrategy.first
+    },
     crossScalaVersions := Dependencies.Versions.CrossScalaForPlugin,
     scalaVersion := scala212,
     Compile / unmanagedSourceDirectories ++= {

sbt-plugin/src/sbt-test/gen-scala-server/01-gen-basic-server/build.sbt

@@ -17,8 +17,8 @@ enablePlugins(PekkoGrpcPlugin)
 
 assembly / assemblyMergeStrategy := {
   // https://github.com/akka/akka/issues/29456
-  case PathList("google", "protobuf", _)    => MergeStrategy.discard
-  case PathList("google", "protobuf", _, _) => MergeStrategy.discard
+  case PathList("google", "protobuf", _*) => MergeStrategy.discard
+  case PathList("META-INF", _*)           => MergeStrategy.discard
   case x =>
     val oldStrategy = (assembly / assemblyMergeStrategy).value
     oldStrategy(x)

sbt-plugin/src/sbt-test/gen-scala-server/07-gen-basic-server-with-pekko/build.sbt

@@ -15,8 +15,8 @@ enablePlugins(PekkoGrpcPlugin)
 
 assembly / assemblyMergeStrategy := {
   // https://github.com/akka/akka/issues/29456
-  case PathList("google", "protobuf", _)    => MergeStrategy.discard
-  case PathList("google", "protobuf", _, _) => MergeStrategy.discard
+  case PathList("google", "protobuf", _*) => MergeStrategy.discard
+  case PathList("META-INF", _*)           => MergeStrategy.discard
   case x =>
     val oldStrategy = (assembly / assemblyMergeStrategy).value
     oldStrategy(x)