chore: update scala3Next to 3.9.0 by He-Pin · Pull Request #3303 · apache/pekko

He-Pin · 2026-07-07T05:15:33Z

Motivation

Scala 3.9.0 is available and should be tested as the next Scala version.

Modification

Update scala3Next version from 3.8.4 to 3.9.0.

Result

Build will use Scala 3.9.0 as the next Scala version.

Tests

Not run - version bump only

References

None - version bump

raboof · 2026-07-19T13:00:43Z

Is this waiting for 3.9.0-RC4 or is there something that still needs investigation?

pjfanning · 2026-07-19T13:39:00Z

there are a few bugs in 3.9.0-RC3 and they should be fixed in RC4.
scala/scala3#26531
scala/scala3#26532

He-Pin · 2026-07-20T06:52:28Z

Not sure why there are quite many bugs in 3.9.0 release :(，let's wait for the next RC4

pjfanning · 2026-07-23T21:01:03Z

still have compile issues

[07-23 14:08:14.282] [error] /home/runner/work/pekko/pekko/actor-tests/src/test/java/org/apache/pekko/actor/AbstractFSMActorTest.java:27:17: org.apache.pekko.actor.AbstractFSMActorTest.MyFSM is not abstract and does not override abstract method org$apache$pekko$actor$FSM$_setter_$org$apache$pekko$actor$FSM$$handleEventDefault_$eq(scala.PartialFunction<org.apache.pekko.actor.FSM.Event<java.lang.String>,org.apache.pekko.actor.FSM.State<java.lang.String,java.lang.String>>) in org.apache.pekko.actor.FSM
[07-23 14:08:14.283] [error] public static class MyFSM extends AbstractFSM<String, String> {
[07-23 14:08:14.283] [error] 
[07-23 14:08:14.283] [error]     private final ActorRef probe;
[07-23 14:08:14.283] [error] 
[07-23 14:08:14.283] [error]     MyFSM(ActorRef probe) {
[07-23 14:08:14.283] [error]       this.probe = probe;
[07-23 14:08:14.283] [error]       onTransition(this::logTransition);
[07-23 14:08:14.284] [error]       startWith("start", "data");
[07-23 14:08:14.284] [error]       when("start", matchEventEquals("next", (newState, data) -> goTo(newState)));
[07-23 14:08:14.284] [error]       when("next", AbstractFSM.NullFunction());
[07-23 14:08:14.284] [error]       initialize();
[07-23 14:08:14.284] [error]     }
[07-23 14:08:14.284] [error] 
[07-23 14:08:14.284] [error]     private void logTransition(final String s1, final String s2) {
[07-23 14:08:14.284] [error]       probe.tell("Transitioning from %1$s to %2$s.".formatted(s1, s2), getSelf());
[07-23 14:08:14.284] [error]     }
[07-23 14:08:14.284] [error]   }
[07-23 14:08:14.284] [error]                 ^
[07-23 14:08:14.778] [info] compiling 44 Scala sources and 1 Java source to /home/runner/work/pekko/pekko/persistence/target/scala-3.9.0-RC4/test-classes ...
[07-23 14:08:20.211] [error] /home/runner/work/pekko/pekko/persistence/src/test/java/org/apache/pekko/persistence/fsm/AbstractPersistentFSMTest.java:28:17: org.apache.pekko.persistence.fsm.AbstractPersistentFSMTest.WebStoreCustomerFSM is not abstract and does not override abstract method org$apache$pekko$persistence$fsm$PersistentFSMBase$_setter_$org$apache$pekko$persistence$fsm$PersistentFSMBase$$handleEventDefault_$eq(scala.PartialFunction<org.apache.pekko.persistence.fsm.PersistentFSM.Event<org.apache.pekko.persistence.fsm.AbstractPersistentFSMTest.WebStoreCustomerFSM.ShoppingCart>,org.apache.pekko.persistence.fsm.PersistentFSM.State<org.apache.pekko.persistence.fsm.AbstractPersistentFSMTest.WebStoreCustomerFSM.UserState,org.apache.pekko.persistence.fsm.AbstractPersistentFSMTest.WebStoreCustomerFSM.ShoppingCart,org.apache.pekko.persistence.fsm.AbstractPersistentFSMTest.WebStoreCustomerFSM.DomainEvent>>) in org.apache.pekko.persistence.fsm.PersistentFSMBase
[07-23 14:08:20.211] [error] public static class WebStoreCustomerFSM
[07-23 14:08:20.212] [error]       extends AbstractPersistentFSM<
[07-23 14:08:20.212] [error]           WebStoreCustomerFSM.UserState,
[07-23 14:08:20.212] [error]           WebStoreCustomerFSM.ShoppingCart,
[07-23 14:08:20.212] [error]           WebStoreCustomerFSM.DomainEvent> {
[07-23 14:08:20.212] [error] 
[07-23 14:08:20.212] [error]     // State name
[07-23 14:08:20.212] [error]     // #customer-states
[07-23 14:08:20.212] [error]     enum UserState implements PersistentFSM.FSMState {
[07-23 14:08:20.212] [error]       LOOKING_AROUND("Looking Around"),
[07-23 14:08:20.212] [error]       SHOPPING("Shopping"),
[07-23 14:08:20.212] [error]       INACTIVE("Inactive"),
[07-23 14:08:20.212] [error]       PAID("Paid");
[07-23 14:08:20.212] [error] 
[07-23 14:08:20.212] [error]       private final String stateIdentifier;
[07-23 14:08:20.212] [error] 
[07-23 14:08:20.212] [error]       UserState(String stateIdentifier) {
[07-23 14:08:20.212] [error]         this.stateIdentifier = stateIdentifier;
[07-23 14:08:20.212] [error]       }
[07-23 14:08:20.212] [error] 
[07-23 14:08:20.212] [error]       @Override
[07-23 14:08:20.212] [error]       public String identifier() {
[07-23 14:08:20.212] [error]         return stateIdentifier;
[07-23 14:08:20.212] [error]       }
[07-23 14:08:20.212] [error]     }
[07-23 14:08:20.212] [error] 
[07-23 14:08:20.212] [error]     // #customer-states
[07-23 14:08:20.212] [error] 
[07-23 14:08:20.212] [error]     // #customer-states-data
[07-23 14:08:20.212] [error]     public static class ShoppingCart {
[07-23 14:08:20.212] [error]       private final List<Item> items = new ArrayList<>();
[07-23 14:08:20.212] [error] 
[07-23 14:08:20.212] [error]       public ShoppingCart(Item initialItem) {
[07-23 14:08:20.212] [error]         items.add(initialItem);
[07-23 14:08:20.212] [error]       }
[07-23 14:08:20.212] [error] 
[07-23 14:08:20.212] [error]       public ShoppingCart() {}
[07-23 14:08:20.212] [error] 
[07-23 14:08:20.212] [error]       public List<Item> getItems() {
[07-23 14:08:20.212] [error]         return List.copyOf(items);
[07-23 14:08:20.212] [error]       }
[07-23 14:08:20.213] [error] 
[07-23 14:08:20.213] [error]       public ShoppingCart addItem(Item item) {
[07-23 14:08:20.213] [error]         items.add(item);
[07-23 14:08:20.213] [error]         return this;
[07-23 14:08:20.213] [error]       }
[07-23 14:08:20.213] [error] 
[07-23 14:08:20.213] [error]       public void empty() {
[07-23 14:08:20.213] [error]         items.clear();
[07-23 14:08:20.213] [error]       }
[07-23 14:08:20.213] [error]     }
[07-23 14:08:20.213] [error] 
[07-23 14:08:20.213] [error]     public record Item(String id, String name, float price) implements Serializable {
[07-23 14:08:20.213] [error]       @Override
[07-23 14:08:20.213] [error]       public String toString() {
[07-23 14:08:20.213] [error]         return "Item{id=%s, name=%s, price=%s}".formatted(id, price, name);
[07-23 14:08:20.213] [error]       }
[07-23 14:08:20.213] [error]     }
[07-23 14:08:20.213] [error] 
[07-23 14:08:20.213] [error]     // #customer-states-data
[07-23 14:08:20.213] [error] 
[07-23 14:08:20.213] [error]     public interface Command {}
[07-23 14:08:20.213] [error] 
[07-23 14:08:20.213] [error]     // #customer-commands
[07-23 14:08:20.213] [error]     public record AddItem(Item item) implements Command {}
[07-23 14:08:20.213] [error] 
[07-23 14:08:20.213] [error]     public enum Buy implements Command {
[07-23 14:08:20.213] [error]       INSTANCE
[07-23 14:08:20.213] [error]     }
[07-23 14:08:20.213] [error] 
[07-23 14:08:20.213] [error]     public enum Leave implements Command {
[07-23 14:08:20.213] [error]       INSTANCE
[07-23 14:08:20.213] [error]     }
[07-23 14:08:20.213] [error] 
[07-23 14:08:20.213] [error]     public enum GetCurrentCart implements Command {
[07-23 14:08:20.213] [error]       INSTANCE
[07-23 14:08:20.214] [error]     }
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     // #customer-commands
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     public interface DomainEvent extends Serializable {}
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     // #customer-domain-events
[07-23 14:08:20.214] [error]     public record ItemAdded(Item item) implements DomainEvent {}
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     public enum OrderExecuted implements DomainEvent {
[07-23 14:08:20.214] [error]       INSTANCE
[07-23 14:08:20.214] [error]     }
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     public enum OrderDiscarded implements DomainEvent {
[07-23 14:08:20.214] [error]       INSTANCE
[07-23 14:08:20.214] [error]     }
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     // #customer-domain-events
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     public enum CustomerInactive implements DomainEvent {
[07-23 14:08:20.214] [error]       INSTANCE
[07-23 14:08:20.214] [error]     }
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     // Side effects - report events to be sent to some "Report Actor"
[07-23 14:08:20.214] [error]     public interface ReportEvent {}
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     public record PurchaseWasMade(List<Item> items) implements ReportEvent {}
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     public enum ShoppingCardDiscarded implements ReportEvent {
[07-23 14:08:20.214] [error]       INSTANCE
[07-23 14:08:20.214] [error]     }
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     private final String persistenceId;
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     @Override
[07-23 14:08:20.214] [error]     public Class<DomainEvent> domainEventClass() {
[07-23 14:08:20.214] [error]       return DomainEvent.class;
[07-23 14:08:20.214] [error]     }
[07-23 14:08:20.214] [error] 
[07-23 14:08:20.214] [error]     @Override
[07-23 14:08:20.214] [error]     public String persistenceId() {
[07-23 14:08:20.214] [error]       return persistenceId;
[07-23 14:08:20.214] [error]     }
[07-23 14:08:20.215] [error] 
[07-23 14:08:20.215] [error]     public static Props props(String persistenceId, ActorRef reportActor) {
[07-23 14:08:20.215] [error]       return Props.create(WebStoreCustomerFSM.class, persistenceId, reportActor);
[07-23 14:08:20.215] [error]     }
[07-23 14:08:20.215] [error] 
[07-23 14:08:20.215] [error]     public WebStoreCustomerFSM(String persistenceId, ActorRef reportActor) {
[07-23 14:08:20.215] [error]       this.persistenceId = persistenceId;
[07-23 14:08:20.215] [error] 
[07-23 14:08:20.215] [error]       // #customer-fsm-body
[07-23 14:08:20.215] [error]       startWith(UserState.LOOKING_AROUND, new ShoppingCart());
[07-23 14:08:20.215] [error] 
[07-23 14:08:20.215] [error]       when(
[07-23 14:08:20.215] [error]           UserState.LOOKING_AROUND,
[07-23 14:08:20.215] [error]           matchEvent(
[07-23 14:08:20.215] [error]                   AddItem.class,
[07-23 14:08:20.215] [error]                   (event, data) ->
[07-23 14:08:20.215] [error]                       goTo(UserState.SHOPPING)
[07-23 14:08:20.215] [error]                           .applying(new ItemAdded(event.item()))
[07-23 14:08:20.215] [error]                           .forMax(Duration.ofSeconds(1)))
[07-23 14:08:20.215] [error]               .event(GetCurrentCart.class, (event, data) -> stay().replying(data)));
[07-23 14:08:20.215] [error] 
[07-23 14:08:20.215] [error]       when(
[07-23 14:08:20.215] [error]           UserState.SHOPPING,
[07-23 14:08:20.215] [error]           matchEvent(
[07-23 14:08:20.215] [error]                   AddItem.class,
[07-23 14:08:20.215] [error]                   (event, data) ->
[07-23 14:08:20.215] [error]                       stay().applying(new ItemAdded(event.item())).forMax(Duration.ofSeconds(1)))
[07-23 14:08:20.215] [error]               .event(
[07-23 14:08:20.215] [error]                   Buy.class,
[07-23 14:08:20.215] [error]                   // #customer-andthen-example
[07-23 14:08:20.215] [error]                   (event, data) ->
[07-23 14:08:20.215] [error]                       goTo(UserState.PAID)
[07-23 14:08:20.215] [error]                           .applying(OrderExecuted.INSTANCE)
[07-23 14:08:20.215] [error]                           .andThen(
[07-23 14:08:20.215] [error]                               exec(
[07-23 14:08:20.215] [error]                                   cart -> {
[07-23 14:08:20.215] [error]                                     reportActor.tell(new PurchaseWasMade(cart.getItems()), self());
[07-23 14:08:20.215] [error]                                     // #customer-andthen-example
[07-23 14:08:20.215] [error]                                     saveStateSnapshot();
[07-23 14:08:20.215] [error]                                     // #customer-andthen-example
[07-23 14:08:20.215] [error]                                   })))
[07-23 14:08:20.215] [error]               // #customer-andthen-example
[07-23 14:08:20.215] [error]               .event(
[07-23 14:08:20.215] [error]                   Leave.class,
[07-23 14:08:20.215] [error]                   // #customer-snapshot-example
[07-23 14:08:20.215] [error]                   (event, data) ->
[07-23 14:08:20.215] [error]                       stop()
[07-23 14:08:20.215] [error]                           .applying(OrderDiscarded.INSTANCE)
[07-23 14:08:20.215] [error]                           .andThen(
[07-23 14:08:20.215] [error]                               exec(
[07-23 14:08:20.215] [error]                                   cart -> {
[07-23 14:08:20.215] [error]                                     reportActor.tell(ShoppingCardDiscarded.INSTANCE, self());
[07-23 14:08:20.215] [error]                                     saveStateSnapshot();
[07-23 14:08:20.215] [error]                                   })))
[07-23 14:08:20.215] [error]               // #customer-snapshot-example
[07-23 14:08:20.216] [error]               .event(GetCurrentCart.class, (event, data) -> stay().replying(data))
[07-23 14:08:20.216] [error]               .event(
[07-23 14:08:20.216] [error]                   StateTimeout$.class,
[07-23 14:08:20.216] [error]                   (event, data) -> goTo(UserState.INACTIVE).forMax(Duration.ofSeconds(2))));
[07-23 14:08:20.216] [error] 
[07-23 14:08:20.216] [error]       when(
[07-23 14:08:20.216] [error]           UserState.INACTIVE,
[07-23 14:08:20.216] [error]           matchEvent(
[07-23 14:08:20.216] [error]                   AddItem.class,
[07-23 14:08:20.216] [error]                   (event, data) ->
[07-23 14:08:20.216] [error]                       goTo(UserState.SHOPPING)
[07-23 14:08:20.216] [error]                           .applying(new ItemAdded(event.item()))
[07-23 14:08:20.216] [error]                           .forMax(Duration.ofSeconds(1)))
[07-23 14:08:20.216] [error]               .event(GetCurrentCart.class, (event, data) -> stay().replying(data))
[07-23 14:08:20.216] [error]               .event(
[07-23 14:08:20.216] [error]                   StateTimeout$.class,
[07-23 14:08:20.216] [error]                   (event, data) ->
[07-23 14:08:20.216] [error]                       stop()
[07-23 14:08:20.216] [error]                           .applying(OrderDiscarded.INSTANCE)
[07-23 14:08:20.216] [error]                           .andThen(
[07-23 14:08:20.216] [error]                               exec(
[07-23 14:08:20.216] [error]                                   cart ->
[07-23 14:08:20.216] [error]                                       reportActor.tell(ShoppingCardDiscarded.INSTANCE, self())))));
[07-23 14:08:20.216] [error] 
[07-23 14:08:20.216] [error]       when(
[07-23 14:08:20.216] [error]           UserState.PAID,
[07-23 14:08:20.216] [error]           matchEvent(Leave.class, (event, data) -> stop())
[07-23 14:08:20.216] [error]               .event(GetCurrentCart.class, (event, data) -> stay().replying(data)));
[07-23 14:08:20.216] [error]       // #customer-fsm-body
[07-23 14:08:20.216] [error]     }
[07-23 14:08:20.216] [error] 
[07-23 14:08:20.216] [error]     /**
[07-23 14:08:20.216] [error]      * Override this handler to define the action on Domain Event during recovery
[07-23 14:08:20.216] [error]      *
[07-23 14:08:20.216] [error]      * @param event domain event to apply
[07-23 14:08:20.216] [error]      * @param currentData state data of the previous state
[07-23 14:08:20.216] [error]      */
[07-23 14:08:20.216] [error]     // #customer-apply-event
[07-23 14:08:20.216] [error]     @Override
[07-23 14:08:20.216] [error]     public ShoppingCart applyEvent(DomainEvent event, ShoppingCart currentData) {
[07-23 14:08:20.216] [error]       if (event instanceof ItemAdded itemAdded) {
[07-23 14:08:20.216] [error]         currentData.addItem(itemAdded.item());
[07-23 14:08:20.216] [error]         return currentData;
[07-23 14:08:20.216] [error]       } else if (event instanceof OrderExecuted) {
[07-23 14:08:20.216] [error]         return currentData;
[07-23 14:08:20.216] [error]       } else if (event instanceof OrderDiscarded) {
[07-23 14:08:20.216] [error]         currentData.empty();
[07-23 14:08:20.216] [error]         return currentData;
[07-23 14:08:20.216] [error]       }
[07-23 14:08:20.216] [error]       throw new RuntimeException("Unhandled");
[07-23 14:08:20.217] [error]     }
[07-23 14:08:20.217] [error]     // #customer-apply-event
[07-23 14:08:20.217] [error]   }
[07-23 14:08:20.217] [error]                 ^
[07-23 14:08:20.267] [error] /home/runner/work/pekko/pekko/persistence/src/test/java/org/apache/pekko/persistence/fsm/AbstractPersistentFSMTest.java:265:17: org.apache.pekko.persistence.fsm.AbstractPersistentFSMTest.PFSMwithLog is not abstract and does not override abstract method org$apache$pekko$persistence$fsm$PersistentFSMBase$_setter_$org$apache$pekko$persistence$fsm$PersistentFSMBase$$handleEventDefault_$eq(scala.PartialFunction<org.apache.pekko.persistence.fsm.PersistentFSM.Event<java.lang.Integer>,org.apache.pekko.persistence.fsm.PersistentFSM.State<org.apache.pekko.persistence.fsm.AbstractPersistentFSMTest.PFSMState,java.lang.Integer,java.lang.Integer>>) in org.apache.pekko.persistence.fsm.PersistentFSMBase
[07-23 14:08:20.267] [error] public static class PFSMwithLog extends AbstractPersistentFSM<PFSMState, Integer, Integer> {
[07-23 14:08:20.267] [error]     {
[07-23 14:08:20.267] [error]       startWith(PFSMState.STARTED, 0);
[07-23 14:08:20.267] [error] 
[07-23 14:08:20.267] [error]       when(
[07-23 14:08:20.267] [error]           PFSMState.STARTED,
[07-23 14:08:20.267] [error]           matchEvent(
[07-23 14:08:20.267] [error]               String.class,
[07-23 14:08:20.267] [error]               (command, currentData) -> {
[07-23 14:08:20.267] [error]                 sender().tell("started", getSelf());
[07-23 14:08:20.267] [error]                 return stay();
[07-23 14:08:20.267] [error]               }));
[07-23 14:08:20.267] [error] 
[07-23 14:08:20.267] [error]       onTransition(this::transitionLogger); // this is tested command
[07-23 14:08:20.267] [error]     }
[07-23 14:08:20.267] [error] 
[07-23 14:08:20.268] [error]     private void transitionLogger(PFSMState from, PFSMState to) {
[07-23 14:08:20.268] [error]       System.out.println("transition from " + from + " to " + to);
[07-23 14:08:20.268] [error]     }
[07-23 14:08:20.268] [error] 
[07-23 14:08:20.268] [error]     @Override
[07-23 14:08:20.268] [error]     public Class<Integer> domainEventClass() {
[07-23 14:08:20.268] [error]       return Integer.class;
[07-23 14:08:20.268] [error]     }
[07-23 14:08:20.268] [error] 
[07-23 14:08:20.268] [error]     @Override
[07-23 14:08:20.268] [error]     public Integer applyEvent(final Integer domainEvent, final Integer currentData) {
[07-23 14:08:20.268] [error]       return 0;
[07-23 14:08:20.268] [error]     }
[07-23 14:08:20.268] [error] 
[07-23 14:08:20.268] [error]     @Override
[07-23 14:08:20.268] [error]     public String persistenceId() {
[07-23 14:08:20.268] [error]       return "id";
[07-23 14:08:20.268] [error]     }
[07-23 14:08:20.268] [error]   }
[07-23 14:08:20.268] [error]                 ^

pjfanning · 2026-07-25T14:04:28Z

@He-Pin would you have time to try to summarise the remaining compile issues for the scala3 team?

He-Pin · 2026-07-25T15:03:45Z

They are working on it now

pjfanning · 2026-08-11T17:07:23Z

Same issues as the 3.9.0-RC4 build. Oddly the build fails with compiling java source files.

Motivation: Scala 3.9.0-RC1 is available and should be tested as the next Scala version. Modification: Update scala3Next version from 3.8.4 to 3.9.0-RC1. Result: Build will use Scala 3.9.0-RC1 as the next Scala version. Tests: Not run - version bump only References: None - version bump

mkurz · 2026-08-14T08:29:05Z

Are you actually planning to release Pekko 2 build with Scala 3.9?
I was long thinking about this for next Play release and I think I would just keep using Scala 3.3.x with-Yfuture-lazy-vals. And after this conversation came up I am more confident to do so.
(Currently Play main is already on Scala 3.9 RC but I will roll that back to 3.3, which should be easy anyway)

pjfanning · 2026-08-14T08:35:56Z

it is not the plan to drop support for Scala 3.3 - these 3.9 builds are just to check that code can build with that release

I suppose that we would make scala 3.9 the baseline at some stage within a year of the 3.9.0 release.

Basically, Pekko 3 would be the target for that but we would be publishing snapshots for Pekko 3 within a few months (within a month or 2 of a Pekko 2.0.0 release).

He-Pin · 2026-08-14T14:24:28Z

@mkurz Yes, this is a part of the community build, make Pekko ready for 3.9.0

pjfanning · 2026-08-19T19:05:38Z

3.9.0-RC6 seems to have fixed the compile issues

He-Pin · 2026-08-20T11:46:59Z

Cool~ it's finally passed

Philippus · 2026-08-27T20:14:01Z

3.9.0 is out!

pjfanning

lgtm - if CI passes

He-Pin force-pushed the wip/scala3-next-3.9.0-RC1 branch from 449c8a7 to 82fef1a Compare July 8, 2026 18:15

He-Pin changed the title ~~chore: update scala3Next to 3.9.0-RC1~~ chore: update scala3Next to 3.9.0-RC2 Jul 9, 2026

He-Pin closed this Jul 10, 2026

He-Pin reopened this Jul 10, 2026

He-Pin changed the title ~~chore: update scala3Next to 3.9.0-RC2~~ chore: update scala3Next to 3.9.0-RC3 Jul 12, 2026

He-Pin marked this pull request as ready for review July 12, 2026 12:21

This was referenced Jul 12, 2026

Generic signature replaces bounded method type parameter uses with the enclosing class type scala/scala3#26531

Closed

Mixin forwarder signature points to a nonexistent nested class owned by the subclass scala/scala3#26532

Closed

He-Pin marked this pull request as draft July 20, 2026 06:51

He-Pin changed the title ~~chore: update scala3Next to 3.9.0-RC3~~ chore: update scala3Next to 3.9.0-RC4 Jul 23, 2026

He-Pin mentioned this pull request Jul 23, 2026

Scala 3.9.0-RC4: trait private val with type alias still generates incompatible setter signature for Java subclasses scala/scala3#26616

Closed

He-Pin changed the title ~~chore: update scala3Next to 3.9.0-RC4~~ chore: update scala3Next to 3.9.0-RC5 Aug 11, 2026

He-Pin and others added 5 commits August 12, 2026 11:32

Update scala3NextVersion to 3.9.0-RC2

449f8d1

Update scala3NextVersion to 3.9.0-RC3

2e3404d

Update Dependencies.scala

04e9c25

Update scala3NextVersion to 3.9.0-RC5

83c23f7

He-Pin force-pushed the wip/scala3-next-3.9.0-RC1 branch from 72b8556 to 83c23f7 Compare August 12, 2026 03:50

Update scala3NextVersion to 3.9.0-RC6

37a7f08

pjfanning changed the title ~~chore: update scala3Next to 3.9.0-RC5~~ chore: update scala3Next to 3.9.0-RC6 Aug 19, 2026

Update scala3NextVersion to 3.9.0

939496c

He-Pin changed the title ~~chore: update scala3Next to 3.9.0-RC6~~ chore: update scala3Next to 3.9.0 Aug 29, 2026

He-Pin marked this pull request as ready for review August 29, 2026 10:04

pjfanning approved these changes Aug 29, 2026

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pjfanning merged commit 0f67661 into apache:main Aug 29, 2026
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He-Pin commented Jul 7, 2026 •

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