Scala 2.13 support

[REASY]

Quickly tried to just update the version to 2.13.6 and compile the project, it didn't work:

Error:

sbt-guardrail(master)> compile
[warn]
[warn]  Note: Unresolved dependencies path:
[error] stack trace is suppressed; run last core / update for the full output
[error] (core / update) sbt.librarymanagement.ResolveException: Error downloading org.scala-sbt:scripted-sbt_2.13:1.5.5
[error]   Not found
[error]   Not found
[error]   not found: https://repo1.maven.org/maven2/org/scala-sbt/scripted-sbt_2.13/1.5.5/scripted-sbt_2.13-1.5.5.pom
[error]   not found: C:\Users\User\.ivy2\localorg.scala-sbt\scripted-sbt_2.13\1.5.5\ivys\ivy.xml
[error]   not found: https://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/org.scala-sbt/scripted-sbt_2.13/1.5.5/ivys/ivy.xml
[error]   not found: https://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/scripted-sbt_2.13/1.5.5/ivys/ivy.xml
[error] Total time: 7 s, completed Jul 24, 2021 5:28:02 PM

[blast-hardcheese]

Sorry for the delay in response! My GitHub Notifications got screwed up, I just re-watched all guardrail repositories a few weeks ago, but I didn't see your issue here.

sbt-guardrail is limited to 2.12 currently because sbt itself is limited to 2.12. guardrail will generate source code compatible with Scala 2.11, 2.12, and 2.13 (2.13 will also be usable from Scala 3 when using 2.13 source compatibility mode)

[blast-hardcheese]

Going to leave this open as some sort of documentation for those who run down the same thought experiment

[Veske]

Should cross-builds work as well with the guardrail task ? I.e should + guardrail being run in a project produce generated clients and servers under both target/scala-2.13 and target/scala-2.12 in case these are the provided crossScalaVersions in the build.sbt ?

[blast-hardcheese]

@Veske That is expected to work, yes. It looks like the sbt task caching is scoped to target/, not target/scala-* as I expected. PR incoming.

[blast-hardcheese]

#149

[Veske]

#149

Thank you for that ! I will try it out in the morning.

[blast-hardcheese]

0.69.0.1 was released with that change, thank you