Resolve problem with too long command line path in Gradle Windows

buildSrc/src/main/kotlin/CommonUtil.kt

@@ -52,7 +52,7 @@ var Project.javaHome: String?
     get() = extra.takeIf { it.has("javaHome") }?.get("javaHome") as? String
     set(v) { extra["javaHome"] = v }
 
-fun Project.generator(fqName: String) = task<JavaExec> {
+fun Project.generator(fqName: String) = smartJavaExec {
     classpath = the<JavaPluginConvention>().sourceSets["test"].runtimeClasspath
     main = fqName
     workingDir = rootDir

buildSrc/src/main/kotlin/SmartJavaExec.kt

@@ -0,0 +1,47 @@
+import org.gradle.api.Project
+import org.gradle.api.tasks.JavaExec
+import org.gradle.jvm.tasks.Jar
+import org.gradle.kotlin.dsl.task
+
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+fun Project.smartJavaExec(configure: JavaExec.() -> Unit) = task<JavaExec> javaExec@{
+    configure()
+
+    val jarTask = project.task("${name}WriteClassPath", Jar::class) {
+        val classpath = classpath
+        val main = main
+        dependsOn(classpath)
+        inputs.property("main", main)
+        doFirst {
+            val classPathString = classpath.joinToString(" ") { project.file(it).toURI().toString() }
+            manifest {
+                attributes(
+                    mapOf(
+                        "Class-Path" to classPathString,
+                        "Main-Class" to main
+                    )
+                )
+            }
+        }
+        archiveName = "$main.${this@javaExec.name}.classpath.container.$extension"
+        destinationDir = temporaryDir
+    }
+
+
+
+    dependsOn(jarTask)
+
+    doFirst {
+        main = "-jar"
+
+        classpath = project.files()
+        val copyArgs = mutableListOf<Any?>().also { it.addAll(args) }
+        args(jarTask.outputs.files.singleFile)
+        args(copyArgs)
+
+    }
+}