Backport Scala 3.x-2.13 sandwich fix

build.sbt

@@ -14,6 +14,7 @@ lazy val root = (project in file("."))
   .settings(
     name := "sbt-projectmatrix",
     pluginCrossBuild / sbtVersion := "1.2.8",
+    scriptedSbt := "1.9.6",
     scalacOptions := Seq("-deprecation", "-unchecked"),
     scriptedLaunchOpts := { scriptedLaunchOpts.value ++
       Seq("-Xmx1024M", "-Dplugin.version=" + version.value)

src/main/scala/sbt/VirtualAxis.scala

@@ -65,7 +65,7 @@ object VirtualAxis {
 
   private[sbt] def isScala2Scala3Sandwich(sbv1: String, sbv2: String): Boolean = {
     def compare(a: String, b: String): Boolean =
-      a == "2.13" && (b.startsWith("0.") || b.startsWith("3."))
+      a == "2.13" && (b == "3" || b.startsWith("3."))
     compare(sbv1, sbv2) || compare(sbv2, sbv1)
   }
 

src/sbt-test/projectMatrix/jvm-sandwich/build.sbt

@@ -1,20 +1,24 @@
 lazy val check = taskKey[Unit]("")
-lazy val scala3M1 = "3.0.0-M1"
-lazy val scala3M2 = "3.0.0-M2"
-lazy val scala213 = "2.13.4"
+lazy val scala3 = "3.5.2"
+lazy val scala213 = "2.13.14"
 
 lazy val fooApp = (projectMatrix in file("foo-app"))
   .dependsOn(fooCore)
   .settings(
     name := "foo app",
   )
-  .jvmPlatform(scalaVersions = Seq(scala3M1, scala3M2))
+  .jvmPlatform(scalaVersions = Seq(scala3))
+
+lazy val fooApp3 = fooApp.jvm(scala3)
+  .settings(
+    test := { () },
+  )
 
 lazy val fooCore = (projectMatrix in file("foo-core"))
   .settings(
     name := "foo core",
   )
-  .jvmPlatform(scalaVersions = Seq(scala213, "2.12.12"))
+  .jvmPlatform(scalaVersions = Seq(scala213, "2.12.18"))
 
 lazy val barApp = (projectMatrix in file("bar-app"))
   .dependsOn(barCore)
@@ -27,7 +31,7 @@ lazy val barCore = (projectMatrix in file("bar-core"))
   .settings(
     name := "bar core",
   )
-  .jvmPlatform(scalaVersions = Seq(scala3M1))
+  .jvmPlatform(scalaVersions = Seq(scala3))
 
 // choose 2.13 when bazCore offers both 2.13 and Dotty
 lazy val bazApp = (projectMatrix in file("baz-app"))
@@ -38,10 +42,9 @@ lazy val bazApp = (projectMatrix in file("baz-app"))
       val cp = (Compile / fullClasspath).value
         .map(_.data.getName)
 
-      streams.value.log.info(cp.toString)
       assert(cp.contains("baz-core_2.13-0.1.0-SNAPSHOT.jar"), s"$cp")
-      assert(!cp.contains("baz-core_3.0.0-M1-0.1.0-SNAPSHOT.jar"), s"$cp")
       assert(projectMatrixBaseDirectory.value == file("baz-app"))
+      assert(!cp.contains("baz-core_3-0.1.0-SNAPSHOT.jar"), s"$cp")
     },
   )
   .jvmPlatform(scalaVersions = Seq(scala213))
@@ -51,4 +54,4 @@ lazy val bazCore = (projectMatrix in file("baz-core"))
     name := "baz core",
     exportJars := true,
   )
-  .jvmPlatform(scalaVersions = Seq(scala213, scala3M1, scala3M2))
+  .jvmPlatform(scalaVersions = Seq(scala213, scala3))

src/sbt-test/projectMatrix/jvm-sandwich/project/plugins.sbt

@@ -3,4 +3,3 @@ sys.props.get("plugin.version") match {
   case _ => sys.error("""|The system property 'plugin.version' is not defined.
                          |Specify this property using the scriptedLaunchOpts -D.""".stripMargin)
 }
-addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.5")

src/sbt-test/projectMatrix/jvm-sandwich/test

@@ -1,6 +1,6 @@
 > projects
 
-> fooApp3_0_0_M1/compile
+> fooApp3/compile
 
 > barApp/compile