Publish Scala 3 artifacts

[guizmaii]

Hi,

Caliban (https://github.com/ghostdogpr/caliban) is using scalafmt-dynamic as a dependency of some of its modules and because scalafmt is not published for Scala 3 it creates issues (ghostdogpr/caliban#1239)

Do you think it would be possible for you to publish scalafmt artifacts for Scala3?

Cheers,
Jules :)

[olafurpg]

@guizmaii thank you for reporting! As a workaround, it should be possible to only depend on scalafmt-interfaces and dynamically classload scalafmt-dynamic. I believe this is what the Gradle spotless integration does to avoid a direct dependency on scalafmt-dynamic. You can use coursier-interface to dynamically download scalafmt-dynamic.

I haven’t looked at what is needed to cross-compile scalafmt-dynamic with Scala 3 but it should be relatively easy since it doesn’t depend on Scalameta (which has no Scala 3 artifact)

[sfali23]

You also should be able to do following as well

def isScala3: Def.Initialize[Boolean] = Def.setting[Boolean](scalaVersion.value.startsWith("3."))
libraryDependencies ++= {
      Seq(
        if (isScala3.value) "org.scalameta" %% "scalafmt-dynamic" % "3.8.3" cross CrossVersion.for3Use2_13
        else "org.scalameta" %% "scalafmt-dynamic" % "3.8.3"
      )
    }