enable src/sbt-test/sbt-release/cross with sbt 2

build.sbt

@@ -87,7 +87,6 @@ TaskKey[Unit]("scriptedTestSbt2") := Def.taskDyn {
   // TODO enable all tests
   val exclude: Set[(String, String)] = Set(
     "command-line-version-numbers",
-    "cross",
     "mercurial",
     "tasks-as-steps",
   ).map("sbt-release" -> _)

src/sbt-test/sbt-release/cross/A.scala

@@ -0,0 +1 @@
+class A

src/sbt-test/sbt-release/cross/build.sbt

@@ -1,10 +1,11 @@
 import sbtrelease.ReleaseStateTransformations._
 
 val Scala213 = "2.13.16"
+val Scala212 = "2.12.20"
 
 scalaVersion := Scala213
 
-crossScalaVersions := Scala213 :: "2.12.20" :: Nil
+crossScalaVersions := Scala213 :: Scala212 :: Nil
 
 releaseCrossBuild := false
 
@@ -19,3 +20,32 @@ releaseProcess := Seq(
   setNextVersion,
   commitNextVersion
 )
+
+name := "sbt-release-cross-test"
+
+InputKey[Unit]("checkTargetDir") := {
+  import complete.DefaultParsers._
+  val args = spaceDelimited("<arg>").parsed
+  val exists = args(1) match {
+    case "exists" =>
+      true
+    case "not-exists" =>
+      false
+  }
+  val dir = file{
+    if (sbtVersion.value.startsWith("1")) {
+      val scalaBinaryV = args(0)
+      s"target/scala-${scalaBinaryV}/classes"
+    } else {
+      val scalaV = args(0) match {
+        case "2.12" =>
+          Scala212
+        case "2.13" =>
+          Scala213
+      }
+      s"target/out/jvm/scala-${scalaV}/sbt-release-cross-test/classes"
+    }
+  }
+
+  assert(dir.isDirectory == exists)
+}

src/sbt-test/sbt-release/cross/test

@@ -8,13 +8,13 @@ $ exec git commit -m init
 > reload
 
 > release with-defaults
-$ exists target/scala-2.13
--$ exists target/scala-2.12
+> checkTargetDir 2.13 exists
+> checkTargetDir 2.12 not-exists
 
 > clean
--$ exists target/scala-2.12
--$ exists target/scala-2.13
+> checkTargetDir 2.12 not-exists
+> checkTargetDir 2.13 not-exists
 
 > release with-defaults cross
-$ exists target/scala-2.13
-$ exists target/scala-2.12
+> checkTargetDir 2.13 exists
+> checkTargetDir 2.12 exists