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build(deps): bump org.scala-lang:scala-library from 2.12.20 to 2.12.21#732

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build(deps): bump org.scala-lang:scala-library from 2.12.20 to 2.12.21#732
dependabot[bot] wants to merge 1 commit intomainfrom
dependabot/gradle/org.scala-lang-scala-library-2.12.21

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@dependabot dependabot bot commented on behalf of github Mar 9, 2026 •
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Bumps org.scala-lang:scala-library from 2.12.20 to 2.12.21.

Release notes

Sourced from org.scala-lang:scala-library's releases.

Scala 2.12.21

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

  • Compiling on JDK 25 is now supported #11028
  • Compiling on JDK 26 is also supported #11172
    • Note: compilation of Ordering subclasses (overriding min / max) may fail on Java 26, see [comment on #11175](scala/scala#11175)

New @uncheckedOverride annotation

The new @uncheckedOverride annotation is equivalent to the override keyword, 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. #11175

GPG 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):

  • Bump the using scala setting in your Scala-CLI project
  • Bump the scalaVersion setting in your sbt or Mill project
  • Download a distribution from scala-lang.org
  • Obtain JARs via Maven Central
Commits
  • b7cc68a Merge pull request #11186 from lrytz/revert-ordering
  • 1ddafac Revert "[backport] Tweak variance of Ordering.min and .max"
  • f843123 Merge pull request #11185 from scala/dependabot/github_actions/2.12.x/actions...
  • dbe2250 Bump actions/checkout from 5 to 6
  • d092b1b Merge pull request #11183 from scala-steward/update/2.12.x/commons-lang3-3.20.0
  • 5b69835 Update commons-lang3 to 3.20.0 in 2.12.x
  • 597789e Merge pull request #11178 from dragos/dragos/backport-base-type-crash-fix
  • 01ad07a Merge pull request #11175 from lrytz/t13127-12
  • 7dcf3a6 Add @uncheckedOverride annotation for definitions that may override
  • a70746c Prevent presentation compiler crash on base type cache invalidation
  • Additional commits viewable in compare view

Most Recent Ignore Conditions Applied to This Pull Request
Dependency Name Ignore Conditions
org.scala-lang:scala-library [>= 2.13.a, < 2.14]
org.scala-lang:scala-library [>= 3.a, < 4]

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@dependabot dependabot bot added dependencies Pull requests that update a dependency file java Pull requests that update java code labels Mar 9, 2026
bestbeforetoday
bestbeforetoday requested changes Mar 9, 2026
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In addition to updating uses of Scala 2.12, this PR incorrectly changes uses of Scala 2.13 to 2.12.

@dependabot
build(deps): bump org.scala-lang:scala-library from 2.12.20 to 2.12.21
f560e06 
Bumps [org.scala-lang:scala-library](https://github.com/scala/scala) from 2.12.20 to 2.12.21.
- [Release notes](https://github.com/scala/scala/releases)
- [Commits](scala/scala@v2.12.20...v2.12.21)

---
updated-dependencies:
- dependency-name: org.scala-lang:scala-library
  dependency-version: 2.12.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot bot force-pushed the dependabot/gradle/org.scala-lang-scala-library-2.12.21 branch from 290d0c0 to f560e06 Compare March 13, 2026 09:20
bvolpato
bvolpato reviewed Mar 25, 2026
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The reviewer (@bestbeforetoday) correctly identified that this PR incorrectly changes uses of Scala 2.13 to 2.12. This is a Dependabot bug — it matched both scala-2-12 and scala-2-13 version lines and replaced both with 2.12.21.

Recommendation: Close this PR. If the Scala 2.12 bump is desired, a manual PR that only updates the scala-2-12 version line would be the correct approach.

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bestbeforetoday commented Mar 25, 2026

Closing as suggested by @bvolpato. Dependabot is obviously not going to fix this PR and it cannot be merged as-is so little point in keeping it open.

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dependabot bot commented on behalf of github Mar 25, 2026

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.

@dependabot dependabot bot deleted the dependabot/gradle/org.scala-lang-scala-library-2.12.21 branch March 25, 2026 19:23
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