Update dependency scala to v2.13.15

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
scala (source)	2.13.12 -> 2.13.15

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Release Notes

scala/scala (scala)

v2.13.15: Scala 2.13.15

Compare Source

The Scala team at Lightbend is pleased to announce Scala 2.13.15.

The following changes are highlights of this release:

Breaking changes

• -Wconf:x,y now means -Wconf:x -Wconf:y, with y overruling x, rather than the reverse (to align with Scala 3.4+ and with user intuition) (#​10708 by @​som-snytt)
• Compiler plugins: rework and improve phase assembly (#​10687 by @​som-snytt)
  • Plugin authors should check to see if they are affected
  • Plugin users may see strange errors if a plugin is affected and not adjusted by its author
  • Most plugins are not affected

Compatibility

• Support JDK 23 in optimizer (via upgrade to patched ASM 9.7.0) (#​10744)
• Support Scala 3.5 in TASTy reader (#​10811 by @​bishabosha)
• REPL: JLine 3.26.3 (was 3.25.1) (#​10827)

Features

• Support alternative JVM system images (via -system, like javac) (#​10801 by @​szeiger)
• Add -Ycollect-statistics for collecting statistics without printing them (#​10795 by @​szeiger)

Align with Scala 3

• Add -Xsource-features:double-definitions to warn or error for double definitions (#​10846 by @​som-snytt)
• Under -Xsource:3, allow importing given, for cross-building (#​10786 by @​som-snytt)
• Under -Xsource:3, remove by-name restriction for case copy (#​10770 by @​som-snytt)

Errors and warnings

• Fix -Wconf and -nowarn to be more consistent (#​10750 by @​som-snytt)
• Add -Wtostring-interpolated to warn if interpolator uses toString (#​10776 by @​som-snytt)
• Improve inferred-Any lint (fixing false positives and false negatives) (#​9452 by @​som-snytt)
• Fix false-positive unused warnings in for comprehensions (#​10812 by @​som-snytt)
  • (Still seeing false positives, or new false positives? see https://github.com/scala/scala/pull/10870)
• Fix false-positive by-name implicit warnings with -Wmacros (#​10781 by @​som-snytt)
• Mention if missing symbol is on the class path (#​10774 by @​som-snytt)
• Avoid unused import warnings in REPL (#​10769 by @​som-snytt)
• Add -Vcyclic to improve reporting of "cyclic reference" errors (#​10680 by @​som-snytt)

More changes

For the complete 2.13.15 change lists, see all merged PRs and all closed bugs.

Compatibility

As usual for our minor releases, Scala 2.13.15 is binary-compatible with the whole Scala 2.13 series.

Upgrading from 2.12? Enable -Xmigration while upgrading to request migration advice from the compiler.

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.

We especially acknowledge and thank A. P. Marki, also known as Som Snytt, who is responsible for many of the improvements in this release.

This release was brought to you by 13 contributors, according to git shortlog -sn --no-merges @​ ^v2.13.14 ^2.12.x. Thank you A. P. Marki, Lukas Rytz, Scala Steward, Seth Tisue, Jamie Thompson, Stefan Zeiger, Hamza Remmal, EnzeXing, Marissa, Philippus Baalman, Samuel Chassot, luozexuan, nbauma109.

Thanks to Lightbend for their continued sponsorship of the Scala 2 team’s efforts. Lightbend offers commercial support for Scala.

Scala 2.13 notes

The release notes for Scala 2.13.0 have important information applicable to the whole 2.13 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

v2.13.14: Scala 2.13.14

Compare Source

The Scala team at Lightbend is pleased to announce Scala 2.13.14.

The following changes are highlights of this release:

Align with Scala 3

• Introduce -Xsource-features, for customizing the behavior of -Xsource:3 and -Xsource:3-cross (#​10709)
  • A section of the Scala 3 Migration Guide documents these flags: documentation

Regression fixes

• Rename -Xlint:named-booleans to -Wunnamed-boolean-literal (and no longer include it in -Xlint) (#​10704 by @​som-snytt)
• Fix ArrayBuilder regression in Scala 2.13.13 (OutOfMemoryError when adding empty arrays) (#​10722 by @​som-snytt)
• Fix 2.13.13 regression in Scaladoc compilation when using Scala 3 definitions (#​10700 by @​bishabosha)

Other improvements

• Unused warnings: for macros, by default, look for usages in expansion (#​10693 by @​som-snytt)
• REPL: Upgrade to JLine 3.25.1 (was 3.24.1) (#​10717)
• Remove SHELLOPTS=vi and -Xjline support; reinstate -Xnojline (#​10716 by @​hvesalai)

More changes

For the complete 2.13.14 change lists, see all merged PRs and all closed bugs.

Compatibility

As usual for our minor releases, Scala 2.13.14 is binary-compatible with the whole Scala 2.13 series.

Upgrading from 2.12? Enable -Xmigration while upgrading to request migration advice from the compiler.

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.

We especially acknowledge and thank A. P. Marki, also known as Som Snytt, who is responsible for many of the improvements in this release.

This release was brought to you by 9 contributors, according to git shortlog -sn --no-merges @​ ^v2.13.13 ^2.12.x. Thank you A. P. Marki, Lukas Rytz, Seth Tisue, Scala Steward, Jamie Thompson, Antoine Amiguet, Heikki Vesalainen, Robert Stoll, guqicun.

Thanks to Lightbend for their continued sponsorship of the Scala 2 team’s efforts. Lightbend offers commercial support for Scala.

Scala 2.13 notes

The release notes for Scala 2.13.0 have important information applicable to the whole 2.13 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

v2.13.13: Scala 2.13.13

Compare Source

The Scala team at Lightbend is pleased to announce Scala 2.13.13.

The following changes are highlights of this release:

Language

• Support binary integer literals using 0b, as in Java (#​10656 by @​som-snytt)

Compatibility

• TASTy reader: support Scala 3.4 (#​10670 by @​bishabosha)
• Support certain Java libraries compiled on JDK 21 (#​10675 by @​SethTisue)
• For JDK 22 support, upgrade to ASM 9.6 (#​10576 by @​Philippus)

Align with Scala 3

• Allow either -Xsource:3 (for preparing to switch to 3) or -Xsource:3-cross (for crossbuilding on 2 and 3); some existing users of -Xsource:3 should switch to -Xsource:3-cross to avoid unwanted behavior changes (#​10573 by @​som-snytt)
  • A new section in the Scala 3 Migration Guide documents -Xsource:3 and -Xsource:3-cross: documentation
• For migration to 3, accommodate case companion as function (#​10648 by @​som-snytt)
• Scala 3 migration warning for implicits found in package prefix (#​10621 by @​lrytz)

Other improvements

• -Yrelease supplements -release, allows access to additional JVM packages (#​10543 by @​som-snytt)
• -Xlint now enables -Xlint:named-booleans to lint unnamed boolean literal args (#​10612 by @​som-snytt)
• Respect java.lang.Deprecated annotation even in Scala sources (#​10517 by @​kapunga)
• Optimize tail recursion on effectively final methods even when final keyword is absent (#​10629 by @​som-snytt)
• Add -Xlint:pattern-shadow to lint pattern varids which are backquotable (#​8806 by @​som-snytt)
• In mixed compilation, allow Java sources to reference MODULE$ (#​10644 by @​som-snytt)
• Scaladoc: re-align -doc-source-url behavior with 2.12 (#​10581 by @​lrytz)

Known issues

• When upgrading to 2.13.13, existing users of -Xsource:3 should explicitly consider switching to -Xsource:3-cross. Some behaviors of -Xsource:3 have changed, e.g. in result type inference for inherited methods; see new doc page for details
• Some library authors who were already using -Xsource:3 are getting MiMa failures when upgrading to 2.13.13 and switching from -Xsource:3 to -Xsource:3-cross. If you’re in this situation, you may need to wait for 2.13.14; see scala/bug#12961
• Users of sbt must upgrade to sbt 1.9.9 to use the console task to access the 2.13.13 REPL (sbt/sbt#7502); error message is NoSuchMethodError: org.jline.utils.AttributedString.fromAnsi
• Regression: Scaladoc generation may fail if you are using the TASTy reader to access Scala 3 dependencies (scala/bug#12955); error message is "Unsupported Scala 3 generic tuple type"; we'll fix it in 2.13.14
• Regression: on JDK 11 (but not 8 or 17 or 21), the REPL prints a harmless "illegal reflective access" warning at startup (scala/bug#12957); we'll fix it in 2.13.14
• The inclusion of -Xlint:named-booleans in -Xlint (#​10612) has already proved at least somewhat controversial, and will likely be adjusted for 2.13.14; you can leave feedback on this at #​10704

More changes

For the complete 2.13.13 change lists, see all merged PRs and all closed bugs.

Compatibility

As usual for our minor releases, Scala 2.13.13 is binary-compatible with the whole Scala 2.13 series.

Upgrading from 2.12? Enable -Xmigration while upgrading to request migration advice from the compiler.

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.

We especially acknowledge and thank A. P. Marki, also known as Som Snytt, who is responsible for many of the improvements in this release.

This release was brought to you by 23 contributors, according to git shortlog -sn --no-merges @​ ^v2.13.12 ^2.12.x. Thank you A. P. Marki, Lukas Rytz, Jamie Thompson, Seth Tisue, Scala Steward, friendseeker, Paul J Thordarson, Philippus Baalman, Shardul Chiplunkar, Stefan Zeiger, Dale Wijnand, Dmitry Komanov, Eugene Yokota, Georgi Krastev, GerretS, Jason Zaugg, Martijn, Mohammad Yousuf Minhaj Zia, Roberto Tyley, Ryan Scheidter, Trey Cahill, c, Dependabot.

Thanks to Lightbend for their continued sponsorship of the Scala 2 team’s efforts. Lightbend offers commercial support for Scala.

Scala 2.13 notes

The release notes for Scala 2.13.0 have important information applicable to the whole 2.13 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

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