Scala 3.6.3-RC1 release procedure

[WojciechMazur]

• Publish artifacts to Maven via CI

  • Ensure scala-steward is blocking automatic upgrades for 3.6.3
  • On release-3.6.3 branch:
    • In project/Build.scala: Set baseVersion = "3.6.3-RC1"
    • In tasty/src/dotty/tools/tasty/TastyFormat.scala ensure ExperimentalVersion is set to stable (0)
    • Create changelog file in changelogs/3.6.3-RC1.md
    • Tag the branch as 3.6.3-RC1
    • Wait for CI to publish artifacts
    • Audit and release artifacts on https://oss.sonatype.org/

• On main branch:

  • In project/Build.scala: Set referenceVersion to 3.6.3-RC1 - Update reference, MiMa previous version and sync TASTy version #22187
  • Check and update project/MiMaFilters.scala

• Wait for releases/confirmation from tooling:

  • Scala CLI - test
  • Scala Native - publish compiler plugin
  • Scastie - update available versions
  • Scala DAP - publish compiler plugin

• Prepare draft of announcement blogpost for 3.6.3 on https://docs.scala-lang.org/

• Announce the release

  • Publish release on GitHub Releases (as pre-release)
  • Create tracking thread on https://contributors.scala-lang.org