Upgrading to Play 3.0.0 with Scala 3

[michbarsinai]

Hi Everyone,
I have a Play/Scala application using play 2.8. The upgrade to play 2.9 and JDK21 went incredibly smooth - very impressive work by the Play core team.

When I'm trying to upgrade to Scala 3, I get an error about SBT not finding the following dependencies:

"org.playframework" % "play-slick" % "6.0.0",
"org.playframework" % "play-slick-evolutions" % "6.0.0",
"be.objectify" % "deadbolt-scala" % "2.8.2",

Any idea why these are missing for Scala3? I thought Scala 3 could use Scala 2.13 binaries, but I may be wrong.

Thanks!

[Squeng]

Hi @michbarsinai

I had run into the same problem with the MongoDB Scala driver (and ended up switching to the Java driver: https://www.mongodb.com/community/forums/t/scala-3-support/115681/7?u=paul_sevinc), so it seems like in general, libraries need to be explicitly built for Scala 3.

What's curious in your case is that Slick's pre-releases seem to have supported Scala 3:

I guess there's hope for Slick, but Deadbolt might be a dead end (no pun intended!).

Best of luck!
Paul

[mkurz]

play-slick is not published for Scala 3 yet. The pre-releases did use a slick milestone version, but the 6.0 final only published with Scala 2.13 support. So we have to wait for slick for an official Scala 3 supporting release.

Deadbolt will have a new version with Scala 3 support soon.

[michbarsinai]

Thanks! Good news about Deadbolt, too.

[mkurz]

@michbarsinai deadbolt-scala 2.9.0 and 3.0.0 released:

• https://github.com/mkurz/deadbolt-2-scala/releases/tag/2.9.0
• https://github.com/mkurz/deadbolt-2-scala/releases/tag/3.0.0