Declare the exact path of the jextract generated sources

With kts build scripts Gradle generates some additional Java sources
which were being picked up by the Java compilation

Author: timofeys1

BuildLogic/src/main/kotlin/utilities/registerJextractTask.kt

@@ -50,21 +50,14 @@ fun Project.registerJextractTask(
         inputs.file(File(projectDir, "Package.swift"))
 
         // monitor all targets/products which depend on the JExtract plugin
-        swiftProductsWithJExtractPlugin().forEach {
-            logger.info("[swift-java:jextract (Gradle)] Swift input target: ${it}")
-            inputs.dir(File(layout.projectDirectory.asFile, "Sources/${it}"))
-        }
-        outputs.dir(layout.buildDirectory.dir("../.build/plugins/outputs/${layout.projectDirectory.asFile.getName().lowercase()}"))
-
-        val baseSwiftPluginOutputsDir = layout.buildDirectory.dir("../.build/plugins/outputs/").get().asFile
-        if (!baseSwiftPluginOutputsDir.exists()) {
-            baseSwiftPluginOutputsDir.mkdirs()
-        }
-        Files.walk(layout.buildDirectory.dir("../.build/plugins/outputs/").get().asFile.toPath()).forEach {
-            // Add any Java sources generated by the plugin to our sourceSet
-            if (it.endsWith("JExtractSwiftPlugin/src/generated/java")) {
-                outputs.dir(it)
-            }
+        swiftProductsWithJExtractPlugin().forEach { targetName ->
+            logger.info("[swift-java:jextract (Gradle)] Swift input target: ${targetName}")
+            inputs.dir(File(layout.projectDirectory.asFile, "Sources/${targetName}"))
+            outputs.dir(
+                layout.buildDirectory.dir(
+                    "../.build/plugins/outputs/${layout.projectDirectory.asFile.getName().lowercase()}/${targetName}/destination/JExtractSwiftPlugin/src/generated/java"
+                )
+            )
         }
 
         workingDir = layout.projectDirectory.asFile