CrossVersion.Disabled is not a subtype of CrossVersion

[dwijnand]

In sbt 0.13 CrossVersion.Disabled was a case object that extends CrossVersion. In sbt 1 it's a contraband type - this means it's not a case object but just a class, so CrossVersion.Disabled is an alias to its companion object..

[dwijnand]

Workaround: Replace CrossVersion.Disabled with CrossVersion.Disabled()..

[dwijnand]

Upstream issue is sbt/contraband#114

Here's the test I wrote for this:

package sbt.librarymanagement

import org.scalatest._

class CrossVersionSpec extends FlatSpec with Matchers {
  "CrossVersion.Disabled" should "be a subtype of CrossVersion" in {
    CrossVersion.Disabled shouldBe a[CrossVersion]
  }
  "CrossVersion.Disabled()" should "be a subtype of CrossVersion" in {
    CrossVersion.Disabled() shouldBe a[CrossVersion]
  }
}