[GitHub] [incubator-pekko] alexandru commented on issue #6: Upgrade scala versions

[GitBox <gi...@apache.org>]

alexandru commented on issue #6:
URL: https://github.com/apache/incubator-pekko/issues/6#issuecomment-1302135402

   Bumping Scala 3's minor version isn't necessarily a good thing, some care is needed.
   
   If a project is using Scala `3.1.3`, bumping the Pekko dependency to a new version that uses Scala `3.2.0`, also forces the project on Scala `3.2.0` — backwards compatibility is provided, but not forward compatibility. In that sense, Scala 3 upgrades behave like libraries. This is unlike upgrading from Scala 2.3.9 to Scala 2.3.10.
   
   And care is needed because a compiler is unlike a library, as it may have bugs that don't manifest in the Pekko library's codebase, but that impacts downstream projects.
   
   I think right now an upgrade to Scala 3.2.0 is totally fine, given the state of the Scala 3 adoption, and that of Pekko, but for the future, it's good to keep in mind that such upgrades basically force the new Scala version on downstream users, and that may not be good for Scala versions that have issues.


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