improvement: Correctly download Scala 2 bridge for Scala 2.13.12

backend/src/main/scala/bloop/ScalaInstance.scala

@@ -17,6 +17,8 @@ import bloop.internal.build.BloopScalaInfo
 import bloop.logging.DebugFilter
 import bloop.logging.Logger
 
+import coursierapi.Repository
+
 final class ScalaInstance private (
     val organization: String,
     val name: String,
@@ -195,12 +197,14 @@ object ScalaInstance {
       scalaOrg: String,
       scalaName: String,
       scalaVersion: String,
-      logger: Logger
+      logger: Logger,
+      additionalRepositories: List[Repository] = Nil
   ): ScalaInstance = {
     def resolveInstance: ScalaInstance = {
       val allPaths = DependencyResolution.resolve(
         List(DependencyResolution.Artifact(scalaOrg, scalaName, scalaVersion)),
-        logger
+        logger,
+        additionalRepos = additionalRepositories
       )
       val allJars = allPaths.collect {
         case path if path.underlying.toString.endsWith(".jar") => path.underlying.toFile

backend/src/main/scala/sbt/internal/inc/BloopComponentCompiler.scala

@@ -27,6 +27,7 @@ import xsbti.ComponentProvider
 import xsbti.Logger
 import xsbti.compile.ClasspathOptionsUtil
 import xsbti.compile.CompilerBridgeProvider
+import scala.util.control.NonFatal
 
 object BloopComponentCompiler {
   import xsbti.compile.ScalaInstance
@@ -44,11 +45,22 @@ object BloopComponentCompiler {
 
   private val CompileConf = Some(Configurations.Compile.name)
   def getModuleForBridgeSources(scalaInstance: ScalaInstance): ModuleID = {
+    val isAfter2_13_11 =
+      try {
+        val Array(_, _, patch) = scalaInstance.version().split("\\.")
+        val patchTrimmed = patch.takeWhile(_.isDigit).toInt
+        scalaInstance.version().startsWith("2.13.") && patchTrimmed >= 12
+      } catch {
+        case NonFatal(_) => false
+      }
+
     def compilerBridgeId(scalaVersion: String) = {
+
       // Defaults to bridge for 2.13 for Scala versions bigger than 2.13.x
       scalaVersion match {
         case sc if (sc startsWith "0.") => "dotty-sbt-bridge"
         case sc if (sc startsWith "3.") => "scala3-sbt-bridge"
+        case _ if isAfter2_13_11 => "scala2-sbt-bridge"
         case sc if (sc startsWith "2.10.") => "compiler-bridge_2.10"
         case sc if (sc startsWith "2.11.") => "compiler-bridge_2.11"
         case sc if (sc startsWith "2.12.") => "compiler-bridge_2.12"
@@ -57,7 +69,7 @@ object BloopComponentCompiler {
     }
 
     val (isDotty, organization, version) = scalaInstance match {
-      case instance: BloopScalaInstance if instance.isDotty =>
+      case instance: BloopScalaInstance if instance.isDotty || isAfter2_13_11 =>
         (true, instance.organization, instance.version)
       case _ => (false, "org.scala-sbt", latestVersion)
     }
@@ -250,7 +262,12 @@ private[inc] class BloopComponentCompiler(
               .Artifact(bridgeSources.organization, bridgeSources.name, bridgeSources.revision)
           ),
           logger,
-          resolveSources = shouldResolveSources
+          resolveSources = shouldResolveSources,
+          List(
+            coursierapi.MavenRepository.of(
+              "https://scala-ci.typesafe.com/artifactory/scala-integration/"
+            )
+          )
         ) match {
           case Right(paths) => paths.map(_.underlying).toVector
           case Left(t) =>

frontend/src/test/scala/bloop/ScalaVersionsSpec.scala

@@ -10,6 +10,8 @@ import bloop.task.Task
 import bloop.util.TestProject
 import bloop.util.TestUtil
 
+import coursierapi.MavenRepository
+
 object ScalaVersionsSpec extends bloop.testing.BaseSuite {
   var loggers: List[RecordingLogger] = Nil
 
@@ -22,7 +24,15 @@ object ScalaVersionsSpec extends bloop.testing.BaseSuite {
 
       def jarsForScalaVersion(version: String, logger: RecordingLogger) = {
         ScalaInstance
-          .resolve(compilerOrg, compilerArtifact, version, logger)
+          .resolve(
+            compilerOrg,
+            compilerArtifact,
+            version,
+            logger,
+            List(
+              MavenRepository.of("https://scala-ci.typesafe.com/artifactory/scala-integration/")
+            )
+          )
           .allJars
           .map(AbsolutePath(_))
       }
@@ -71,7 +81,8 @@ object ScalaVersionsSpec extends bloop.testing.BaseSuite {
     "2.12.17",
     "2.13.10",
     "3.1.3",
-    "3.2.1"
+    "3.2.1",
+    "2.13.12-bin-86f40c2"
   )
 
   val allVersions = if (TestUtil.isJdk8) jdk8OnlyVersions ++ scalaVersions else scalaVersions