[Gradle] Convert taskOutputsBackupExcludes into SetProperty

#KT-49785 In Progress

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/tasks/Tasks.kt

@@ -386,14 +386,7 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> @Inject constr
 
     /** Task outputs that we don't want to include in [TaskOutputsBackup] (see [TaskOutputsBackup.outputsToRestore] for more info). */
     @get:Internal
-    protected open val taskOutputsBackupExcludes: List<File>
+    internal abstract val taskOutputsBackupExcludes: SetProperty<File>
-        get() {
-            val list = mutableListOf<File>()
-            if (preciseCompilationResultsBackup.get()) {
-                list.add(destinationDirectory.get().asFile)
-            }
-            return list
-        }
 
     @TaskAction
     fun execute(inputChanges: InputChanges) {
@@ -420,7 +413,7 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> @Inject constr
                             fileSystemOperations,
                             layout.buildDirectory,
                             layout.buildDirectory.dir("snapshot/kotlin/$name"),
-                            outputsToRestore = allOutputFiles() - taskOutputsBackupExcludes,
+                            outputsToRestore = allOutputFiles() - taskOutputsBackupExcludes.get(),
                             logger
                         ).also {
                             it.createSnapshot()
@@ -639,9 +632,6 @@ abstract class KotlinCompile @Inject constructor(
             classpathSnapshotProperties.classpathSnapshot
         )
 
-    override val taskOutputsBackupExcludes: List<File>
-        get() = (classpathSnapshotProperties.classpathSnapshotDir.orNull?.asFile?.let { listOf(it) } ?: emptyList()) + super.taskOutputsBackupExcludes
-
     @get:Internal
     final override val defaultKotlinJavaToolchain: Provider<DefaultKotlinJavaToolchain> = objectFactory
         .propertyWithNewInstance({ this })

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/tasks/configuration/AbstractKotlinCompileConfig.kt

@@ -80,6 +80,9 @@ internal abstract class AbstractKotlinCompileConfig<TASK : AbstractKotlinCompile
             task.preciseCompilationResultsBackup
                 .convention(propertiesProvider.preciseCompilationResultsBackup)
                 .finalizeValueOnRead()
+            task.taskOutputsBackupExcludes.addAll(task.preciseCompilationResultsBackup.map {
+                if (it) listOf(task.destinationDirectory.get().asFile, task.taskBuildLocalStateDirectory.get().asFile) else emptyList()
+            })
 
             task.incremental = false
             task.useModuleDetection.convention(false)

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/tasks/configuration/KotlinCompileConfig.kt

@@ -19,6 +19,7 @@ import org.jetbrains.kotlin.gradle.plugin.sources.DefaultLanguageSettingsBuilder
 import org.jetbrains.kotlin.gradle.plugin.tcsOrNull
 import org.jetbrains.kotlin.gradle.report.BuildMetricsService
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+import org.jetbrains.kotlin.gradle.utils.providerWithLazyConvention
 import org.jetbrains.kotlin.project.model.LanguageSettings
 
 internal typealias KotlinCompileConfig = BaseKotlinCompileConfig<KotlinCompile>
@@ -57,6 +58,12 @@ internal open class BaseKotlinCompileConfig<TASK : KotlinCompile> : AbstractKotl
                 } else {
                     task.classpathSnapshotProperties.classpath.from(task.project.provider { task.libraries }).disallowChanges()
                 }
+                task.taskOutputsBackupExcludes.addAll(
+                    task.classpathSnapshotProperties.classpathSnapshotDir.asFile.flatMap {
+                        // it looks weird, but it's required to work around this issue: https://github.com/gradle/gradle/issues/17704
+                        objectFactory.providerWithLazyConvention { listOf(it) }
+                    }.orElse(emptyList())
+                )
             }
         }
     }