Update dependency scala to v3 by renovate[bot] · Pull Request #165 · reviewdog/errorformat

renovate · 2026-06-07T06:05:56Z

ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package	Change	Age	Confidence
scala (source)	`2.13.12` → `3.8.4`

Release Notes

scala/scala3 (scala)

`v3.8.4`

Compare Source

Highlights of the release

Allow :help syntax for all settings #26052
feature: Add logical package parsing for sourcepath #25446
Upgrade Scala CLI to 1.14.0
- https://github.com/VirtusLab/scala-cli/releases/tag/v1.12.5
  - --cross support for run, package and doc sub-commands (experimental)
  - Global --offline config key
  - Local .m2 in publish local (experimental)
- https://github.com/VirtusLab/scala-cli/releases/tag/v1.13.0
  - Support for Scala.js 1.21.0
  - Ammonite REPL deprecated & scheduled for removal
  - java-test-runner for pure Java tests
  - GraalVM native-image packaging: packaging.graalvmJvmId and packaging.graalvmArgs
- https://github.com/VirtusLab/scala-cli/releases/tag/v1.14.0
  - Support for .test.java
  - A toggle to turn auto-IDE-setup off

Other changes and fixes

Annotations

Also copy param annots at mixin #24916
Named arg may be deprecatedName #21588
Use dealiasKeepRefiningAnnots in AvoidMap #25609

Backend

Do not simplify isInstanceOf if unrelated types might be subtypes at run-time #25535
Port more Scala2 tests + some mixin improvements #25573
Use Objects.equals in translating == #25314

Compiler Phases

Harden Period creation and use of Run/PhaseId #25484
Make Phase.run protected #25366

Context Functions

Fix crash when processing path dependent context functions using HKTs #25530

Coverage

Fix #25555: Preserve singleton precision during scoverage lifting #25556
Fixes #25482: Ensure package transformation properly handles language imports in InstrumentCoverage #25546
Scoverage: do not instrument erased values. #25298

Default parameters

Fix named arguments evaluation order with by-name parameters #25161
Typer: remove by-name lifting and replace default-getter args with fresh syms #25502

Documentation

Error mentions bad _1 selector #25616
Document Scala compiler error codes #24734
Fix capture checking doc links in language.scala #25498
Docs: apply snippet compiler on new types reference docs #19513
Remove outdated comment in value classes #25428
Update IsIterable scaladoc #24692

Enums

Make enum apply ascriptions inferred types #25562

Extension Methods

Accept using right associative parameters #24766
Better handling of illegal trees in extension #25368

GADTs

Also trust TypeTest when there is a Bind #24568

Implicits

Deprecation when inferring implicit from non-accessible companion #25516
Fix missing deprecation warning for implicit in non-accessible companion #25608
Update migration message #25627

Inline

Ensure the inline match scrutinee type conforms to the recalculated type #24988
Do not update Symbol defTrees when retyping after Inlining #23870
Inlines: decide sealing against original target, while using widened type as cast destination #25448
Do not generate access proxies for locally defined protected defs #25056
Avoid useless scrutinee proxy vals in inline match reduction #25279
Improve the test for creating protected method accessors for inlines #25865

Linting

Match apply in PolyFunction for override #25505
Value discard checks inline call for exemption #25554
Introduce error message ids for shadow warnings #25101
Warn if for with many vals and overloaded map #25090

Match Types

Restore MatchTypeNoCases warning with correct source position #25470

Named Tuples

Fix Ycheck crash from singleton tuple selects after specialization #25331
Fix #23621: make named tuples exhaustive checkable #25267

Nullability

Patch to allow interop with XMLBuilder and -Yexplicit-nulls #25221
Be honest about the nullability of ConsoleReporter.reader and SourcePosition.outer. #25561

Opaque Types

Treat synthetic casts as pure #25126

Overloading

Pretype args before skipping clause of overloaded application #23012

Parser

Fix #20063: Java leading annotation parsing #25503
Observe outdent also for type cases and type blocks in quotes #25519
Fix: import resolution for Java #25537
Fix #25456: parser crash on polymorphic context bound #25623
Accept primitive.class in annotations #25363
InCase has indent width of case #25295
Don't automatically insert OUTDENT before COMMA #25501
Add "did you mean to use parentheses/a block" when finding a complex expression on the RHS of an infix operator #25099
Pat var must be isVarPattern #25701
Don't pop outermost region when skipping #25738
Context bound always has a span #25809
Don't lookahead from interpolation #25834

Pattern Matching

Clean desugaring of simple tuple assignments #25010
Extend caching in the space engine beyond local context #23483
Prevent from getting children in case of non-sealed private #25359
Use MatchCaseUnreachable #24829
Fix wrong exhaustive check with sequence wildcard on case class with custom unapply #24260
Try expanding case class to the product of its fields #25454
Fix false-positive pat mat unreachable case warning #25978

Positions

Preserve span of this during statification of trait constructors #25354

Presentation Compiler

Improvement: Add fallbacks in non critical places for presentation compiler #25483
Improvement: Use method type if it's available #25641
Bugfix: Fix wrong type in InferredType code action #25469
Fix & feat: improvements in selection ranges #25290
Fix: ignore implicit apply for signature help #25294
Bugfix: remove stale top-level symbols between runs #25317
feature: Improve the logical sources provider #26079

Quotes

Fix crashing for context bound type variables in quoted patterns #25286
Remove redundant mapOver in fixThisTypeModuleClassReferences #25440
Improve LambdaTypes handling in Quotes reflect memberType #25786

Reflection

Fix Select.copy in reflect API losing DerivedName for default getters #25269
Do not expose ClassInfo in memberType in reflect API #24922

Reporting

Force conditional warnings when configured #25552
Suppressions before finalize #25576
Use dollar-free param names in stub implementations #25646
Fix #24711: Use dot notation for Java nested types in error messages #24919
Use deprecatedOverriding message #25439
Improve message for misplaced using #15624
Use other tree for actual symbol of Assign #22869
Add ErrorMessageID to -Winfer-union warnings (#25073) #25249
Fix TastyPrinter's JAR-walking logic to include subdirectories #25678

REPL

Allow global language imports in REPL and snippet compiler #25458
Fix all REPL tests when production behavior is enabled #25449
Add setting to control REPL print height #25560
Fix #25691: scalaXml Elem rendering in repl #25781
Fix Ctrl+C handling in the REPL #25782
Fix "Fix Ctrl-C Handling in the REPL" #25835

Rewrites

Fix incorrect rewrite of expr _ when expr has a function type #25457

Runner

Fix for #22443: prevent stty from being called when not running in a terminal #22444

Scala.js

Fix #25342: Transfer methodsAllowingJSAwait to forcefully inlined methods. #25344

Scaladoc

Use <sup> tags for exponents in Scaladoc comments #25645
Do not hide when a class or a trait extends Any #25403
Do not generate documentation for AnyVal, it exists now #25399
Ability to hide snippets from the documentation #25411
Update scaladoc signature for given methods #25325
Fetch the right kind for synthesised definitions #25405
Scaladoc: Take title from sidebar.yml into account #18997
Bump jackson-* to 3.1.2 (was 2.15.1) #25785
Parse HTML properly in Scaladoc #25681

SemanticDB

Encapsulate SemanticDB package, unify symbol and document printing #25084
Better refinement symbols in semanticDB #18604

Standard Library

Array.range trusts NumericRange.count #24878
Chore: optimize lazy val with power of two. #22428
Move process parse exceptions to sys.error instead of a custom exception #25675

Syntax

Check protected parent constructor accesses only occurs in child constructors #25511
Fix protected constructor access #25523
Do not warn for package object at the top level #25826

TASTy

Fix infinite loop with bad section ends in TastyHeaderUnpickler #25676

Tooling

Fix MSI installer reporting wrong Scala version on Windows #25591
Fix -Ymagic-offset-header for DoubleDefinition error and implicitNotFound errors, and remove global unmanaged cache #25706

Transform

Always encode in derived name #23478
Fix "Scala 3.8.3 compiling covariant overrides with separate compilation causes AbstractMethodError at runtime" #25659
Do not overwrite the supertype of non-trait super in Erasure #26081

Tuples

Normalize tuple types when typing patterns #25335
Rewrite Desugar.makePatDef to fix typing issues and be more understandable #24972

Typeclass Derivation

Fix #23043: spurious package conflict from non-class directories #25441
Also checkRefinement for Singleton mirror #24080

Typer

Preserve pattern, use tuple type when optimizing #25566
Detect InsertedApply on Apply to break synthetic apply loops, not just Select #25463
Fail self-recursive deferred given impl #22595
Use TypeComparer.constValue in TypeEval #24718
Add the transparent flag to java.lang.Object #25394
Make type arguments to default methods InferredTypeTrees #25852

Experimental: Capture Checking

Distribute capture set into and-type on RHS of comparison #25509
Fix global capabilities support in scaladoc #25563
Improve capture-error precision for lambdas #25583
Make result types of hoisted superArg defs InferredTypes #25577
Transform result any to fresh in Setup.transformSym #25584
Propagate expected types when rechecking match return expressions #25580
Drop assertion in toFunctionType #25628
Delay normalization of capture sets of vals and defs #25640
Fluidify explicit self types for non-CC classes #25639
Add missing TypeMap in Setup: FreshCapToResult #25648
Fixes for capture checking case class methods #25278
Don't add capture variables for type arguments with pure upper bounds #25316
Two fixes for #25251 #25488
Fixed #25430: Add missing CaptureChecked flag during ExpandSAMs #25443
Fix accessibility check for any's in static objects #25582
Disallow type parameters in OnlyCapability annotations #25496
Capture check Try #25072
Make Capability types have implied capture sets for new #25346

Experimental: Safe Mode

Enhance safe mode #25638
Fixes to Safe Mode Checking #25603
Reject scala.runtime's mutable refs in safe mode #25749
Tweak SafeRefs allow list for java.util classes #25783
Tune SafeRefs allow list for scala.util classes #25787
Require explicit types in assumeSafe definitions in the empty package #25795
Skip checkSafeAnnots for synthetic symbols #25773
Reject News with unsupported Java classes #25761

Experimental: Explicit Nulls

Recognize Nullable annotations in explicit nulls #25237

Contributors

Thank you to all the contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.8.3..3.8.4 these are:

   156	Solal Pirelli
    84	Martin Odersky
    45	Wojciech Mazur
    36	Som Snytt
    15	Piotr Chabelski
    13	Matt Bovel
    13	Tomasz Godzik
    12	Hamza Remmal
    12	Rikito Taniguchi
    10	Jan Chyb
     9	Oliver Bračevac
     9	noti0na1
     8	Yichen Xu
     8	dependabot[bot]
     7	Jakub Warchoł
     5	Emil Ejbyfeldt
     4	Kenji Yoshida
     4	Li Haoyi
     3	Anatolii Kmetiuk
     3	HarrisL2
     3	Lukas Rytz
     3	Sébastien Doeraene
     2	110416
     2	James You
     2	Matt Dziuban
     2	Ondřej Lhoták
     2	Patryk Zieliński
     2	Ruslan Shevchenko
     1	Aviral Garg
     1	Bbn08
     1	Eugene Flesselle
     1	Harrishan Raveendran
     1	He-Pin(kerr)
     1	Jakub Cieśluk
     1	Jeon Yoonjae
     1	Mark Hammons
     1	Natsu Kagami
     1	Oliver Marienfeld
     1	Piotr Paradziński
     1	Vadim Chelyshov
     1	philwalk

`v3.8.3`

Compare Source

Release highlights

Add support for local coverage on and off with // $COVERAGE-OFF$ and // $COVERAGE-ON$ #24486
Deprecate for removal -print-lines compiler setting #25330
Add safe mode capture checking extension #25307
Port the Scala2 JVM backend optimizer #25165

Other changes and fixes

Desugaring

Fix #24997: Avoid unnecessary CHECKCAST in untupled function parameters #25085

Documentation

Fix little errors in the API documentation #25241
CC Language Reference: Rename cap to any/fresh #25057

Enums

Deprecate override class, improve checks #24828
Fix Java enum forwarders to pull from companion on initialization #24361

Experimental: Capture Checking

Rename caps.cap to caps.any #24923
Track global capabilities #24883
Treat local mutable vars as capabilities #24815
Fix Crashes when Capture-set Parameters Conflict with Terms #25029
Replace "cannot be included in" by "cannot flow into" in error messages #25155
CC: Add field captures to self-type constraints #24984
Add uses clauses for templates #24857
Drop special code paths for objects #24881
Do not consider generated getters to be update def #24906
Under cc, mark inferred type arguments to inline methods with an @inferred annotation #25175
Handle call-by-name types in bad locations under cc #25154
Fixes for global capabilities #25123
Warn if reach capability in result will likely cause leakage #24860
Make <fluid> decorations replace existing capture sets #25012
Make TypeMaps in Setup work correctly for fresh #24985
For a limited time, also recognize caps.cap #25076
Fix closure typing #25014
Map class capture sets via as-seen-from with prefix of created types #24830
Drop SafeMode attribute in Tasty #25357
Fix @assumeSafe addition in safe mode #25364
Disallow @assumeSafe under safe mode #25462

Experimental: Modularity

Fix nested desugaring of applied constructor types #25288

Exports

Add ctor proxies before exports #24884

Inline

Make containsOuterRefsAnywhere follow aliases #25214
Find annotation args in inline expansion #24895
Also substitute symbols in case bindings symbols #24849

JDK

Skip over JEP 445 compact compilation units #23247
Handle MissingType during Erasure phase #24817

JVM Backend

Simplify JVM interface list emission, remove a mini-phase #25203
Don't generate bridge methods for inaccessible Java package-private methods #25166
Revise isLocalToCompilationUnit #24856
Enforce JVM UTF-8 string limits in the backend #25300
Fix class super-call invokespecial owner #25437

Linting

Extension check handles hiBound of opaque type #25172
Distrust tree pos for patvar lint #25043
Move second CheckUnused after pattern matcher #25114
Unused lint ignores args to ctor of enclosing class #24768
Check inline expansion for exclusion #23019

Metaprogramming

Fix: Fix incremental compilation of (some unquoted) macros #24969

Named Tuples

Don't try checking for ambiguous single-element tuples when in types #24910
Fix "NamedTuple type in match is parsed as named pattern" #24929
Fix "Named pattern matching doesn't work in val statements or for generators" #24928
Fix false exhaustivity warning for pattern returning NamedTuple #23362

Overloading

Prefer non-extension to extension #24943

Parser

Check seen for TypeParamRef in TypeSizeAccumulator #25264
End of new expr never shrinks #25253
Use toVector for XML literal sequences #23221

Pattern Matching

Emit unchecked warnings for trait patterns #24962

Presentation Compiler

Bugfix: inline value false-positive shadowing with lambda params #25140
Test hover on backticked identifiers with whitespace #25142
Inlining interpolated variables #25144
Bugfix: treat self types as parent types #25167
Feat(pc): add closing labels inlay hints #25178
Coursier dependency imports should have lexicographic ordering #21592
Bugfix: Fix various minor presentation compiler issues #25256
Fix negative activeParameter in signature help #24945
Closes #7532: Parameter hints not working for functions #23854
Fix opaque types displayed as Nothing & Any in hover and signature help #24921

REPL

Skip module-info.class files during REPL tab-completion #24838
Fix REPL usage of macros loaded via :dep and :jar #25312
Make REPL type echo-ing use partially qualified names where made possible by imports #24850
Force REPL to not evaluate LazyList #25444

Reporting

Check -Werror on summarize #25096
Fixes #24233: Remove misleading JDK compatibility hint for TASTy errors #25171
Ignore resetting if preferPrevious #24991
Enhance WInferUnion to not warn propagated explicit union types #25280
Improve diagnostic message for unnecessary trailing underscore in eta-expansion #25285
More descriptive "not found" message when type/term exists with the expected term/type name #24959
Warn on Scala 2 auto-apply if loosely nullary #24811
Fix printing references to nested objects #25086
Add error note for type mismatch involving blocks without last expression #25181
Drop -print-lines option #24905
Don't suggest invisible members of root imports #24999

Runner

Bump Scala CLI to v1.12.3 (was v1.12.2) #25365
Bump Scala CLI to 1.12.4 (was 1.12.3) #25434

Rewrites

Accommodate ArrowAssoc in infix named arg migration #25255

Scaladoc

Init MacroClassLoader in scaladoc #25141
Scaladoc Overload Method Link Fix #25156
Fix duplicate member entries in Scaladoc generation #24712
Scaladoc Tests for CC #25277
Skip generation of API pages when building reference docs #25153
Docs: Enforce links checks in the generated docs #25425

Scala.js

Fix issues in presentation compiler when using Scala JS #25450
Fix issues with Scala JS and the presentation compiler #25550

Settings

Don't enable compact annotations under 2.13. #25419

Standard Library

Remove incorrect equals implementations from ArrayBuilder #25205
Use StringBuilder intead of StringBuffer in Regex #24576
Update StringOps.* implementation #24786

TASTy format

Don't absolutize sources outside of the sourceroot in TASTy #25429

Tooling

Fix behavior of -Ydump-sbt-inc #25125

Typer

Never widen constant type on selector type in matches #25197
Preserve insertion order when balancing And/OrType #25361
Improve ref check of constructors #24342

Quotes

Fix #25208: handle AndType(TermRef, TypeRef) in TreeUnpickler path trees #25209

Contributors

Thank you to all the contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.8.2..3.8.3 these are:

    92	Martin Odersky
    68	Solal Pirelli
    65	Wojciech Mazur
    27	Som Snytt
    13	Tomasz Godzik
    11	Li Haoyi
     9	Kenji Yoshida
     9	Oliver Bračevac
     8	Rikito Taniguchi
     7	dependabot[bot]
     5	Jakub Warchoł
     4	Emil Ejbyfeldt
     4	Hamza Remmal
     4	Zieliński Patryk
     4	noti0na1
     3	Binayak Das
     3	Lukas Rytz
     3	Matt Bovel
     3	Piotr Chabelski
     2	Chua Chee Seng
     2	Eugene Yokota
     2	Jamie Thompson
     2	Jędrzej Rochala
     2	Natsu Kagami
     2	Oscar Boykin
     2	P. Oscar Boykin
     2	Sébastien Doeraene
     1	Anatolii Kmetiuk
     1	Aviral Garg
     1	Bbn08
     1	Bill Venners
     1	Eric Ventor
     1	Jentsch
     1	Jeon Yoonjae
     1	Krrish Biswas
     1	Matt Dziuban
     1	Merlin Hughes
     1	Philippus Baalman
     1	Vadim Chelyshov

`v3.8.2`

Compare Source

Highlights of the release

Warn if for with many vals and overloaded map #25090
Support :dep ... to add library dependencies in the Scala REPL #24131
Upgrade to Scala.js 1.20.2. #24898
Bump Scala CLI to v1.12.2 (was 1.11.0) #25217:
- New aliases for RC and nightly Scala versions
- Detailed changelog available in scala-cli release notes for versions: v1.12.0, v1.12.1 and v1.12.2

Other changes and fixes

Context Functions

Inferred Contextual params are less nameable #24381

Desugaring

A comprehension with valdef aliases is never a candidate for map elimination. #23448

Experimental: Capture Checking

Capture Checking of Lazy Vals #24261
Represent read-only with a classifier #24295
Fix typing closure blocks where result type refers to a closure parameter. #24299
Systematically recompute denotations when needed in rechecker phases #24302
Ensure that read-only methods don't use exclusive capabilities #24311
Handle capture parameters in dcs #24328
Don't prematurely force info of fields with inferred types #24336
Disallow fresh caps from parameter bounds in results #24541
Avoid box failures and better diagnosis if they come back #24546
Freshen all explicit arguments of type applications #24354
Optimize and harden isCaptureChecking tests #24439
Add Unscoped classifier #24470
Optimization: Introduce CompactAnnotation #24679

Experimental: Seperation Checking

Changes to Mutable #24352
Don't crash when update is used as a modifier outside cc #24378
Imply update only for consume methods in Mutable classes #24383
Decompose Mutable #24495
Add freeze wrapper (2) #24518
Make Arrays mutable types under separation checking #24649

Experimental: Explcit Nulls

Relax flow typing checks on Flexible Types #24278
Do not expose flexible types #24292
Do not search contextual function type in union types in general #24393
Add jspecify NonNull annotation to NotNullAnnots list #24487
Recognize Nullable annotations in explicit nulls #25237

Experimental: Global Initialization

Global object init checker gives warning when accessing an object before its super constructor finishes #24349

Annotations

Accommodate adapted Scala 2 annotation value #17516
Harden Annotation.refersToParamOf #24647
Do not allow @targetName on primary constructor too #24682

Coverage

Fix issues with Scala.js and coverage #24769
Make coverage support incremental compilation #24773
Improvement: Try to optimize coverage phase #24925

Enums

Lint enum case in outer context #24652

Exports

Preserve select of exported member in newExpr #24570

Erasure

Fix isJvmAccessible to handle nested protected Java classes #24625

Inline

Allow references to erased values in types #24421
Cast inline call results to result type, not method type #25111
Fix "Compiler crash when calling another file's inline def that uses a private constructor" #24941

Implicits

Avoid more constraints in result if trying views #24369

Initialization

Skip caret when source is missing in initialization checker #23926

JVM Backend

Preserve singleton types for final val aliases to Java enum constants #24980

Linting

Suppression matches inlined positions #24092
Wshadow option recognizes Wall #24469

Nullability

Record NotNullInfo for exceptional try-catch #24320

Overloading

Ignore selection prototypes when typing type applications #24489
Fix varargs overload resolution with wildcard types #24669
Fix override checking for Java methods with covariant array #24408

Parser

Permit new with trivial end #24331
Single line case lambda gets a region #24497
Error tree on outdent is zero extent #23796

Pattern Matching

Fix false exhaustivity for GADT under separate compilation #23966

Presentation Compiler

Create extension method in infer method action #24721
Exclude XRayModeHint for synthetics #24722
Fix incorrect XRay hint #24738
Improve multi-line code message rendering #24723
Improvement: Allow passing -explain to the presentation compiler #24740
Handle inlined tree in implicit parameter inlay hints #24762

REPL

Improve REPL code, echo and exception highlighting with pprint and fansi #24298
Replace REPL signal handling with raw mode jline terminal to make Ctrl-C handling work when REPL is a child process #24842
Fix "Colon as operator part at beginning of line in REPL" #24942
Fix "REPL dependency on scala-parallel-collections doesn't work" #25064
Fix "Still can't use scala-parallel-collections in REPL via :dep" #25092

Reporting

Addendum when apply error involves default arg #21133
Forward reference error includes line numbers #22534
Improve error messages for scope extrusion errors #24318
Use a better span for an anonymous class #24640
Add ErrorMessageID to -Winfer-union warnings (#25073) #25249

Scaladoc

Allow to additional scalacOptions in Markdown code snippets #24755

Standard Library

Enable capture checking on Tuple #24345
Update StringOps.padTo implementation #24575
Use String.repeat in scala.io.Source #24594
Ensure stability of IArray.tapEach #24727

TASTy

Pickle CompactAnnotations as regular annotations #25213
Drop spurious applies in unpickler and inliner #25201

Transform

Adjust purity of trait with lazy member #23788

Tuples

Fix inconsistent typeSize calculation for TupleN vs recursive pair encodings #24743

Typer

Dealias type of type constructor in typedAppliedTypeTree #24522
Improve TypeVar instantiation logic #24697
Try to instantiate TypeVars inside pt when possible #24231
Error instead of crash when generating trees referring to skolems #24380
Try to fix callee type inference in typedFunctionValue #24732
Fix wildcardArgOK for mixed wildcard/concrete type args #25001

Union types

Dealias in isSimpleThrowable check #24744

Value class

Avoid NPE when calling hashCode on a value class wrapping null #25110

Quotes

Make quotes.reflect.Position.ofMacroExpansion consider -Ymagic-offset-header #24301

Contributors

Thank you to all the contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.8.1..3.8.2 these are:

   103	Martin Odersky
    93	Hamza Remmal
    79	Wojciech Mazur
    36	Som Snytt
    27	noti0na1
    16	Rikito Taniguchi
     9	Li Haoyi
     8	Matt Bovel
     8	Oliver Bračevac
     7	Kenji Yoshida
     7	Natsu Kagami
     7	Tomasz Godzik
     7	Yichen Xu
     6	Jan Chyb
     6	Piotr Chabelski
     5	Zieliński Patryk
     5	dependabot[bot]
     4	HarrisL2
     4	Lukas Rytz
     3	Jamie Thompson
     2	Chua Chee Seng
     2	Fengyun Liu
     2	Guillaume Martres
     2	Lluc Santamaria Riba
     2	Sébastien Doeraene
     1	Alex1005a
     1	Bill Venners
     1	Emil Ejbyfeldt
     1	EnzeXing
     1	Evgeny Vereshchagin
     1	Jeon Yoonjae
     1	Lorenzo Gabriele
     1	Seth Tisue
     1	matsu-chara
     1	rjolly
     1	zielinsky

`v3.8.1`

Compare Source

Highlights of the release

Scala 3.8.1 is a hotfix release for 3.8.0.
It addresses runtime regressions found after the 3.8.0 artifacts were released, specifically JVM linkage errors affecting a small subset of Scala 2 specialized types and members.

Additional regressions

The following regressions still present in 3.8.1 will be addressed in a forthcoming 3.8.2 hotfix release:

Some for comprehensions have incorrect behavior at runtime (#24673)
Certain code involving calls to certain parts of the Java standard library fail to compile (#25133)

Cautious users may wish to wait for 3.8.2.

Fixed regressions

Revert addition of new base trait to ReturnThrowable #24975
Use uninlined version of Scala 2 standard-library in ScalaLibraryPlugin #25008
Add missing specialized method in NumericRange #25020
Correct the list of files to copy from Scala 2 #25033

Thank you to all the contributors who made this release possible 🎉

`v3.8.0`

Please use Scala 3.8.1
Version 3.8.0 was published with runtime regressions.

Highlights of the release

Require JDK 17+ #24146
Add explicit null checks to Scala 3 Standard Library #23566
Add capture-checking to Scala 3 Standard Library #23688
Add capture-checking to Scala 2 collections #23769
Extract REPL to be its own artifact #24243
SIP-57: Make runtimeChecked a standard feature #23262
SIP-62: Make better-fors a stable feature #23630
Preview SIP-71: Make into preview feature #24090
Experimental SIP-67: Strict equality pattern matching #23803
Experimental SIP-70: Allow multiple spreads in function arguments #23855
Experimental SIP-75: Allow single-line lambdas after : #23821
Experimental: Match if sub cases #23786
Support JDK 26 #24430
Make scala.caps.Pure non-experimental #23745
Allow annotations to annotate themselves #24447
Changed indicator for LTS/Next series indicator in pom.xml #24709

Other changes and fixes

Annotations

Emit deprecation warnings when a symbol is annotated by a deprecated annotation #23906
Deprecate scala.annotation.elidable #23913
Deprecate scala.annotation.transparentTrait #23116

Experimental: Capture Checking

Make scala.caps.Pure transparent #23914
Make scala.caps.Capability non-experimental #23507
Check conformance to scala.caps.Pure upper bound only under cc #23784
Widen type parameters before box adaptation #23809
Level checking: distinguish between certain capset vars with same owner #24077
Implement FreshCap Handling for Classes and Objects #24136
Skip capture sets in checkNoPrivateLeaks and drop them in posttyper when cc is not enabled #23886
Changes around reaches and uses #23584
Revise capability hierarchy and fix classifiers #23656
Improve closure typing #23700
Better printing of capabilities in error messages #23701
More improvements to error messages #23721
CC Language Ref Polishings #23762
CC Language Reference Improvements v2 #23818
Changes in CC around classes, constructors, this #23874
Various fixes and simplifications #23881
Simplify Level Chec

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Update dependency scala to v3

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Update dependency scala to v3#165

Update dependency scala to v3#165
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Release Notes

v3.8.4

Highlights of the release

Other changes and fixes

Annotations

Backend

Compiler Phases

Context Functions

Coverage

Default parameters

Documentation

Enums

Extension Methods

GADTs

Implicits

Inline

Linting

Match Types

Named Tuples

Nullability

Opaque Types

Overloading

Parser

Pattern Matching

Positions

Presentation Compiler

Quotes

Reflection

Reporting

REPL

Rewrites

Runner

Scala.js

Scaladoc

SemanticDB

Standard Library

Syntax

TASTy

Tooling

Transform

Tuples

Typeclass Derivation

Typer

Experimental: Capture Checking

Experimental: Safe Mode

Experimental: Explicit Nulls

Contributors

v3.8.3

Release highlights

Other changes and fixes

Desugaring

Documentation

Enums

Experimental: Capture Checking

Experimental: Modularity

Exports

Inline

JDK

JVM Backend

Linting

Metaprogramming

Named Tuples

Overloading

Parser

Pattern Matching

Presentation Compiler

REPL

Reporting

Runner

Rewrites

Scaladoc

Scala.js

Settings

Standard Library

TASTy format

Tooling

renovate Bot commented Jun 7, 2026 •

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`v3.8.4`

`v3.8.3`

`v3.8.2`

`v3.8.1`

`v3.8.0`