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Upgrade Scala to 3.8.4 and sbt to 1.12.11#8

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mbryzek wants to merge 1 commit into
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2026-07-10-upgrade-dep
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Upgrade Scala to 3.8.4 and sbt to 1.12.11#8
mbryzek wants to merge 1 commit into
mainfrom
2026-07-10-upgrade-dep

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@mbryzek

@mbryzek mbryzek commented Jul 10, 2026

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Summary

  • Upgrade Scala 3.4.2 -> 3.8.4 (build.sbt)
  • Upgrade sbt 1.10.0 -> 1.12.11 (project/build.properties)
  • Rename -Xfatal-warnings to -Werror: Scala 3.8.4 deprecates the old alias, and the deprecation warning itself fails the build under fatal warnings

Verification

sbt compile passes on Scala 3.8.4 / sbt 1.12.11.

🤖 Generated with Claude Code

Scala 3.8.4 deprecates -Xfatal-warnings in favor of -Werror; the old
alias now emits a warning that fails the build under fatal warnings,
so the flag is renamed as part of the upgrade.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@mbryzek mbryzek marked this pull request as ready for review July 10, 2026 12:36
@mbryzek mbryzek closed this Jul 11, 2026
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