Update dependency scala to v2.12.21#92
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This PR contains the following updates:
2.12.10→2.12.21Warning
Some dependencies could not be looked up. Check the Dependency Dashboard for more information.
Release Notes
scala/scala (scala)
v2.12.21: Scala 2.12.21Compare Source
The Scala team at Akka is pleased to announce Scala 2.12.21.
This release is compatible with JDK 25 LTS and also introduces preliminary support for JDK 26.
The following are highlights of this release:
JDK 25 and 26 support
Orderingsubclasses (overridingmin/max) may fail on Java 26, see comment on #11175New
@uncheckedOverrideannotationThe new
@uncheckedOverrideannotation is equivalent to theoverridekeyword, except that it allows to override nothing. This is useful when cross-building: a method may override or not, depending on the version of some dependency. #11175GPG key change
This release is signed with a different GPG key than previous Scala 2.12 releases. The new key is the same one used by Scala 3. #11158
More changes
For the complete 2.12.21 change lists, see all merged PRs and all closed bugs.
Compatibility
As usual for our minor releases, Scala 2.12.21 is binary-compatible with the whole Scala 2.12 series.
Contributors
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 9 contributors, according to
git shortlog -sn --no-merges @​ ^v2.12.20. Thank you Seth Tisue, Lukas Rytz, A. P. Marki, Friendseeker, Matthias Kurz, NthPortal, Philippus Baalman, Scala Steward, dependabot[bot].Thanks to Akka for their continued sponsorship of the Scala 2 team’s efforts. Akka offers commercial support for Scala.
Scala 2.12 notes
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Obtaining Scala
Scala releases are available through a variety of channels, including (but not limited to):
using scalasetting in your Scala-CLI projectscalaVersionsetting in your sbt or Mill projectv2.12.20: Scala 2.12.20Compare Source
This release improves compatibility:
and compiler profiling:
For complete 2.12.20 change lists, see all merged PRs and all closed bugs.
Compatibility
As usual for our minor releases, Scala 2.12.20 is binary-compatible with the whole Scala 2.12 series.
Contributors
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 8 contributors, according to
git shortlog -sn --no-merges @​ ^v2.12.19. Thank you Scala Steward, Seth Tisue, Lukas Rytz, A. P. Marki, Hamza Remmal, Philippus Baalman, Stefan Zeiger, nbauma109.Thanks to Lightbend for their continued sponsorship of the Scala 2 team’s efforts. Lightbend offers commercial support for Scala 2.
Scala 2.12 notes
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Obtaining Scala
Scala releases are available through a variety of channels, including (but not limited to):
scalaVersionsetting in your sbt projectusing scalasetting in your Scala CLI projectv2.12.19: Scala 2.12.19Compare Source
This release improves compatibility:
-Yreleaseoption supplements-release, allows access to additional JVM packages (#10671 by @som-snytt)And it has bugfixes:
NullPointerExceptionin some tree-based collections (#10640 by @lrytz)InterruptedExceptionhandling forFutures (#10379 by @szeiger)For complete 2.12.19 change lists, see all merged PRs and all closed bugs.
Compatibility
As usual for our minor releases, Scala 2.12.19 is binary-compatible with the whole Scala 2.12 series.
Contributors
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 9 contributors, according to
git shortlog -sn --no-merges @​ ^v2.12.18 ^2.11.x. Thank you Scala Steward, Seth Tisue, A. P. Marki, Lukas Rytz, Stefan Zeiger, Dmitry Komanov, Philippus Baalman, cahilltr, dependabot.Thanks to Lightbend for their continued sponsorship of the Scala 2 team’s efforts. Lightbend offers commercial support for Scala 2.
Scala 2.12 notes
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Obtaining Scala
Scala releases are available through a variety of channels, including (but not limited to):
scalaVersionsetting in your sbt projectusing scalasetting in your Scala CLI projectv2.12.18: Scala 2.12.18Compare Source
This release improves compatibility:
It also aids migration to Scala 2.13 and Scala 3:
-Xsource:2.13, warn when inherited takes precedence over outer definitions (#10297, #10321)-Xsource:2.13, flag eta-expanding methods without parameter lists (#10283)-Xsource:2.13, don't GLB binders of type patterns, use the type directly (#10298)and improves linting:
and enables improved tooling:
Block/Applyinversion transform (#10176)For complete 2.12.18 change lists, see all merged PRs and all closed bugs.
Compatibility
As usual for our minor releases, Scala 2.12.18 is binary-compatible with the whole Scala 2.12 series.
Contributors
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 6 contributors, according to
git shortlog -sn --no-merges @​ ^v2.12.17 ^2.11.x. Thank you Seth Tisue, Lukas Rytz, Scala Steward, A. P. Marki, Jason Zaugg, Philippus Baalman.Thanks to Lightbend for their continued sponsorship of the Scala 2 team’s efforts. Lightbend offers commercial support for Scala.
Scala 2.12 notes
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Obtaining Scala
Scala releases are available through a variety of channels, including (but not limited to):
scalaVersionsetting in your sbt projectusing scalasetting in your Scala-CLI projectv2.12.17: Scala 2.12.17Compare Source
This release has the following notable changes affecting compatibility:
-release; deprecate-target(#10109)It also fixes this regression in Scala 2.12.16:
and aids migration to Scala 2.13:
-Xsource:2.13, warn about changed precedence in imports (#10095)and eases cross-compilation with Scala 3:
usingin method signature (to aid cross-building with Scala 3) (#10075)and enables improved tooling:
For complete 2.12.17 change lists, see all merged PRs and all closed bugs.
Compatibility
As usual for our minor releases, Scala 2.12.17 is binary-compatible with the whole Scala 2.12 series.
Contributors
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 7 contributors, according to
git shortlog -sn --no-merges @​ ^v2.12.16 ^2.11.x. Thank you Lukas Rytz, Seth Tisue, Sébastien Doeraene, A. P. Marki, Jason Zaugg, Scala Steward, Daniel Esik.Thanks to Lightbend for their continued sponsorship of the Scala core team’s efforts. Lightbend offers commercial support for Scala.
Scala 2.12 notes
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Obtaining Scala
Scala releases are available through a variety of channels, including (but not limited to):
scalaVersionsetting in your sbt-based projectv2.12.16: Scala 2.12.16Compare Source
This release improves compatibility with recent JDKs:
-targetsupport JDK 8 through 19 (and deprecate 5 through 7) (#9916)MethodHandle.invoke(et al) under JDK 17-release(#9930)AnyVal#formatted(formatString), to avoid conflict with JDK 15+ method (#9783)and aids cross-compiling with Scala 3:
?as a wildcard even without-Xsource:3(#10005)and improves security and error reporting:
For complete 2.12.16 change lists, see all merged PRs and all closed bugs.
Known issue
Scala 2.12.16 contains a regression that was discovered after the artifacts were published. Only mixed compilation of Scala and Java source files together is affected, and only when the Scala code contains references to certain nested classes in the Java sources. The problem manifests as a compile-time type error. Follow link for details and workarounds. We'll fix the problem in Scala 2.12.17 which we expect to release in a few months.
Compatibility
As usual for our minor releases, Scala 2.12.16 is binary-compatible with the whole Scala 2.12 series.
Contributors
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 18 contributors, according to
git shortlog -sn --no-merges @​ ^v2.12.15 ^2.11.x. Thank you Scala Steward, Seth Tisue, Lukas Rytz, Sébastien Doeraene, A. P. Marki, Daniel Le, Jason Zaugg, Guillaume Martres, Frank Thomas, Philippus, Daniela Sfregola, Dale Wijnand, Vadzim Marchanka, hepin.p, naferx, Fredrik Svensson, Štefan Jurčo, Georgi Krastev.Thanks to Lightbend for their continued sponsorship of the Scala core team’s efforts. Lightbend offers commercial support for Scala.
Scala 2.12 notes
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Obtaining Scala
Scala releases are available through a variety of channels, including (but not limited to):
scalaVersionsetting in your sbt-based projectv2.12.15: Scala 2.12.15Compare Source
This release improves compatibility with JDK 17 and 18:
IllegalArgumentExceptionin JDK 17+ for lambda deserialization (#9676)and facilitates cross-building with Scala 3 with:
casein pattern bindings even without-Xsource:3(#9740 by @smarter)import x.{*, given}under-Xsource:3(#9736 by @smarter)-Xsource:3) (#9665 by @som-snytt)For complete 2.12.15 change lists, see all merged PRs and all closed bugs.
Compatibility
As usual for our minor releases, Scala 2.12.15 is binary-compatible with the whole Scala 2.12 series.
Contributors
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 4 contributors, according to
git shortlog -sn --no-merges @​ ^v2.12.14 ^2.11.x. Thank you Jason Zaugg, Seth Tisue, A.P. Marki, Guillaume Martres.Thanks to Lightbend for their continued sponsorship of the Scala core team’s efforts. Lightbend offers commercial support for Scala.
Scala 2.12 notes
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Obtaining Scala
Scala releases are available through a variety of channels, including (but not limited to):
scalaVersionsetting in your sbt-based projectv2.12.14: Scala 2.12.14Compare Source
-Xsource:3to help projects cross build between 2.12.x, 2.13.x and 3.x.(#9589, #9595 and #9620 by @smarter and @neko-kai)
TaskSupportthrough operations of parallel collections. (#9529, backport of fix for scala/scala-parallel-collections#152, by @lrytz)For complete 2.12.14 change lists, see all merged PRs and all closed bugs.
Compatibility
As usual for our minor releases, Scala 2.12.14 is binary-compatible with the whole Scala 2.12 series.
Contributors
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 40 contributors, according to
git shortlog -sn --no-merges HEAD ^v2.12.13 ^2.11.x. Thank you Jason Zaugg, Lukas Rytz, Guillaume Martres, Dale Wijnand, Seth Tisue, A. P. Marki, Mike Skells, Tom Grigg, Kai, Mario Galic, Martijn Hoekstra, tanishiking, Philippus, Adriaan Moors, Sébastien Doeraene, Tobias Schlatter, Andrii, Filipe Regadas, Alexey Kotlyarov.Thanks to Lightbend for their continued sponsorship of the Scala core team’s efforts. Lightbend offers commercial support for Scala.
Scala 2.12 notes
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Obtaining Scala
Scala releases are available through a variety of channels, including (but not limited to):
scalaVersionsetting in your sbt-based projectv2.12.13: Scala 2.12.13Compare Source
Highlights
@nowarnand-Wconf), backported from 2.13For a tour of this capability, consult this blog post by Lukas Rytz.
Standard library
CharSequence#isEmptymethod #9292CharSequencewrappers inPredefnon-implicit.Other changes
immutable.{TreeMap,TreeSet}by using mutation within the builderFor complete 2.12.13 change lists, see all merged PRs and all closed bugs.
Compatibility
As usual for our minor releases, Scala 2.12.13 is binary-compatible with the whole Scala 2.12 series.
The internal implementation of
groupByhas been optimized to reduce allocations. This can result in different ordering elements if you iterate the resultingMap. The ordering of the returned map is not specified behaviour and should not be relied upon, for ordering sensitive use cases consider building aLinkedHashMaporTreeMapinstead.Contributors
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 40 contributors, according to
git shortlog -sn --no-merges HEAD ^v2.12.12 ^2.11.x. Thank you Mike Skells, Jason Zaugg, Lukas Rytz, Dale Wijnand, A. P. Marki, Harrison Houghton, Darcy Shen, Seth Tisue, Ivano Pagano, João Ferreira, Ethan Atkins, NthPortal.Thanks to Lightbend for their continued sponsorship of the Scala core team’s efforts. Lightbend offers commercial support for Scala.
Scala 2.12 notes
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Obtaining Scala
Scala releases are available through a variety of channels, including (but not limited to):
scalaVersionsetting in your sbt-based projectv2.12.12: Scala 2.12.12Compare Source
Highlights
This release adds compiler support for scala-async and backports substantial performance improvements to collections.
This transform is based on the macro implementation in
scala-asyncbut has been substantially rewritten to fix somelong standing bugs, reduce the overhead of compilation and simplify the extension points for third party effect systems.
scala-async1.0.0 will be released shortly building atop this phase. (#8816)immutable.{TreeSet, TreeMap}are now based on a backport of the 2.13.x implementation. (#8749)immutable.{HashMap, HashSet}are more efficient -- they now use mutation during building to reduce memory churn. (#8726)Further highlights
This is not a complete list of changes. For that, see all merged PRs and all closed bugs.
Compatibility
As usual for our minor releases, Scala 2.12.12 is binary-compatible with the whole Scala 2.12 series.
Contributors
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation,
spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 13 contributors, according to
git shortlog -sn --no-merges v2.12.11..v2.12.12. Thank you Jason Zaugg, Mike Skells, Lukas Rytz, Harrison Houghton, Adriaan Moors, Stefan Zeiger, Dale Wijnand, Seth Tisue, A. P. Marki, Eugene Yokota, NthPortal, Georgi Krastev and Martijn Hoekstra.Thanks to Lightbend for their continued sponsorship of the Scala core team’s efforts. Lightbend offers commercial support for Scala.
Scala 2.12 notes
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Obtaining Scala
Scala releases are available through a variety of channels, including (but not limited to):
scalaVersionsetting in your sbt-based projectv2.12.11: Scala 2.12.11Compare Source
The Scala 2.12.11 release mainly brings bug fixes and performance improvements.
Highlights
-Yrepl-class-based, an alternative internal REPL encoding that avoids deadlocks (details on #8712)-Yrepl-use-magic-importsflag that avoids deep class nesting in the REPL, which can lead to deteriorating performance in long sessions (#8576)toXmethods that could expose the underlying mutability of aListBuffer-generated collection (#8674)JDK 9+ support
:javapin the REPL now works on JDK 9+ (#8400)Other changes
Duration("1m"),Duration("3 hrs")(#8325, #8450)TypeTagcaches (#8470) and some thread safety issues in runtime reflection (#8433)For more details, see the full list of merged PRs and the list of closed bugs.
Compatibility
Custom subclasses of
immutable.HashSetandimmutable.HashMapthat overrideelemHashCodeare no longer supported. Note thatHashSetandHashMaparesealed, and their subclasses in the standard library are marked@deprecatedInheritance. More details in scala-dev#675.As usual for our minor releases, Scala 2.12.11 is binary compatible with the whole Scala 2.12 series.
Contributors
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation,
spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 15 contributors, according to
git shortlog -sn --no-merges v2.12.10..v2.12.11. Thank you Jason Zaugg, Mike Skells, Harrison Houghton, Dale Wijnand, Seth Tisue, Lukas Rytz, A. P. Marki, Laurynas Lubys, Diego E. Alonso Blas, Daniele Torelli, Philippus, Aaron S. Hawley, leitoh, Eugene Yokota.Thanks to Lightbend for their continued sponsorship of the Scala core team's efforts. Lightbend offers commercial support for Scala.
Scala 2.12 notes
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Obtaining Scala
Scala releases are available through a variety of channels, including (but not limited to):
scalaVersionsetting in your sbt-based projectConfiguration
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