refactor: start using newly published bloop-gradle

build.sbt

@@ -446,6 +446,7 @@ lazy val metals = project
       "sbtBloopVersion" -> V.sbtBloop,
       "gradleBloopVersion" -> V.gradleBloop,
       "mavenBloopVersion" -> V.mavenBloop,
+      "gradleBloopVersion" -> V.gradleBloop,
       "scalametaVersion" -> V.scalameta,
       "semanticdbVersion" -> V.semanticdb,
       "javaSemanticdbVersion" -> V.javaSemanticdb,
@@ -648,6 +649,7 @@ lazy val metalsDependencies = project
       "com.lihaoyi" % "mill-contrib-testng" % V.mill,
       "org.virtuslab.scala-cli" % "cli_3" % V.scalaCli intransitive (),
       "ch.epfl.scala" % "bloop-maven-plugin" % V.mavenBloop,
+      "ch.epfl.scala" %% "gradle-bloop" % V.gradleBloop,
     ),
   )
   .disablePlugins(ScalafixPlugin)

metals/src/main/scala/scala/meta/internal/builds/GradleBuildTool.scala

@@ -6,6 +6,7 @@ import java.nio.file.Path
 
 import scala.util.Properties
 
+import scala.meta.internal.metals.BuildInfo
 import scala.meta.internal.metals.UserConfiguration
 import scala.meta.io.AbsolutePath
 
@@ -14,14 +15,15 @@ case class GradleBuildTool(userConfig: () => UserConfiguration)
     with BloopInstallProvider {
 
   private val initScriptName = "init-script.gradle"
-  private def initScript(versionToUse: String) =
+  private val gradleBloopVersion = BuildInfo.gradleBloopVersion
+  private val initScript =
     s"""
        |initscript {
        |  repositories{
        |    mavenCentral()
        |  }
        |  dependencies {
-       |    classpath 'ch.epfl.scala:gradle-bloop_2.12:$versionToUse'
+       |    classpath 'ch.epfl.scala:gradle-bloop_2.12:$gradleBloopVersion'
        |  }
        |}
        |allprojects {
@@ -30,8 +32,7 @@ case class GradleBuildTool(userConfig: () => UserConfiguration)
     """.stripMargin.getBytes()
 
   private lazy val initScriptPath: Path = {
-    val bloopVersion = userConfig().currentBloopVersion
-    Files.write(tempDir.resolve(initScriptName), initScript(bloopVersion))
+    Files.write(tempDir.resolve(initScriptName), initScript)
   }
 
   private lazy val gradleWrapper = {

project/V.scala

@@ -21,7 +21,7 @@ object V {
   val coursierInterfaces = "1.0.11"
   val debugAdapter = "3.0.4"
   val genyVersion = "0.7.1"
-  val gradleBloop = bloop
+  val gradleBloop = "1.5.7-RC1"
   val java8Compat = "1.0.2"
   val javaSemanticdb = "0.7.4"
   val jsoup = "1.15.3"