use sbt-version-policy and declare versionScheme

[SethTisue]

No description provided.

[SethTisue]

The Scala 3 jobs are hitting scalacenter/sbt-version-policy#62

and the Scala 2 jobs are getting

[info] scalacheck: mimaPreviousArtifacts is empty, not analyzing binary compatibility.
[error] sbt.librarymanagement.ResolveException: Error downloading default:scala-parallel-collections_2.13:1.0.1
[error]   Not found
[error]   not found: /home/travis/.ivy2/localdefault/scala-parallel-collections_2.13/1.0.1/ivys/ivy.xml
[error]   not found: https://repo1.maven.org/maven2/default/scala-parallel-collections_2.13/1.0.1/scala-parallel-collections_2.13-1.0.1.pom
[error] 	at lmcoursier.CoursierDependencyResolution.unresolvedWarningOrThrow(CoursierDependencyResolution.scala:258)

@julienrf note the incorrect URL — it's looking in default/scala-parallel-collections_2.13 when it should be org/scala-lang/modules/scala-parallel-collections_2.13. I could use your help here. is this is a bug in sbt-version-policy?

[julienrf]

it's looking in default/scala-parallel-collections_2.13 when it should be org/scala-lang/modules/scala-parallel-collections_2.13. I could use your help here. is this is a bug in sbt-version-policy?

Maybe, yes, or it could be an interaction between sbt-scala-module and sbt-version-policy, since both set MiMa settings.

It is not clear to me how the root project is defined, in this repository, but it’s organization setting is default, instead of org.scala-lang.modules.

A workaround is to invoke versionPolicyCheck only on the core project, which is the only one being published here.