3.8.0-RC1 release procedure

[WojciechMazur]

• Publish artifacts to Maven via CI

  • Ensure scala-steward is blocking automatic upgrades for 3.8.0
  • On release-3.8.0 branch:
    • In project/Build.scala: Set baseVersion = "3.8.0-RC1"
    • In tasty/src/dotty/tools/tasty/TastyFormat.scala ensure MinorVersion is set to 8
    • In tasty/src/dotty/tools/tasty/TastyFormat.scala ensure ExperimentalVersion is set to experimental (1 or higher)
    • Create changelog file in changelogs/3.8.0-RC1.md
    • Tag the branch as 3.8.0-RC1
    • Wait for CI to publish artifacts
    • Audit and release artifacts on https://central.sonatype.com/

• On main branch:

  • In project/Build.scala: Set referenceVersion to 3.8.0-RC1
  • Check and update project/MiMaFilters.scala
  • Move content of */src-bootstrapped to */src
  • Remove content of */src-non-bootstrapped

• Wait for releases/confirmation from tooling:

  • Scala CLI - test: Bump Scala 3 Next RC to 3.8.0-RC1 VirtusLab/scala-cli#3957
  • Scala Native - publish compiler plugin
  • Scastie - update available versions [chore] Set Scala 3.7.4 and 3.8.0-RC1 as latest/stable Next release scalacenter/scastie#1202
  • Scalameta Parser - test

• Prepare draft of announcement blogpost for 3.8.0 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/t/scala-3-8-0-release-thread/7291