Resolve bootstrap compiler classpath in root buildscript

Temporary workaround for bootstrapping.
Building the project with plugin version 1.2.60-dev-xxx
and deployVersion='1.3-SNAPSHOT' fails because Gradle
substitutes kotlin-stdlib dependency of kotlinCompilerClasspath
configuration with project dependency ':kotlin-stdlib'.
kotlinCompilerClasspath configuration is used to run the compiler,
which cannot be started with not yet built ':kotlin-stdlib'.

build.gradle.kts

@@ -35,7 +35,14 @@ buildscript {
         }
     }
 
+    // a workaround for kotlin compiler classpath in kotlin project: sometimes gradle substitutes
+    // kotlin-stdlib external dependency with local project :kotlin-stdlib in kotlinCompilerClasspath configuration.
+    // see also configureCompilerClasspath@
+    val bootstrapCompilerClasspath by configurations.creating
+
     dependencies {
+        bootstrapCompilerClasspath(kotlinDep("compiler-embeddable", bootstrapKotlinVersion))
+
         classpath("com.gradle.publish:plugin-publish-plugin:0.9.7")
         classpath(kotlinDep("gradle-plugin", bootstrapKotlinVersion))
         classpath("net.sf.proguard:proguard-gradle:5.3.3")
@@ -353,6 +360,13 @@ allprojects {
             task("printTestCompileClasspath") { doFirst { javaConvention.sourceSets["test"].compileClasspath.printClassPath("test compile") } }
             task("printTestRuntimeClasspath") { doFirst { javaConvention.sourceSets["test"].runtimeClasspath.printClassPath("test runtime") } }
         }
+
+        run configureCompilerClasspath@ {
+            val bootstrapCompilerClasspath by rootProject.buildscript.configurations
+            configurations.findByName("kotlinCompilerClasspath")?.let {
+                dependencies.add(it.name, files(bootstrapCompilerClasspath))
+            }
+        }
     }
 }
 

build.gradle.kts.182

@@ -35,7 +35,14 @@ buildscript {
         }
     }
 
+    // a workaround for kotlin compiler classpath in kotlin project: sometimes gradle substitutes
+    // kotlin-stdlib external dependency with local project :kotlin-stdlib in kotlinCompilerClasspath configuration.
+    // see also configureCompilerClasspath@
+    val bootstrapCompilerClasspath by configurations.creating
+
     dependencies {
+        bootstrapCompilerClasspath(kotlinDep("compiler-embeddable", bootstrapKotlinVersion))
+
         classpath("com.gradle.publish:plugin-publish-plugin:0.9.7")
         classpath(kotlinDep("gradle-plugin", bootstrapKotlinVersion))
         classpath("net.sf.proguard:proguard-gradle:5.3.3")
@@ -352,6 +359,13 @@ allprojects {
             task("printTestCompileClasspath") { doFirst { javaConvention.sourceSets["test"].compileClasspath.printClassPath("test compile") } }
             task("printTestRuntimeClasspath") { doFirst { javaConvention.sourceSets["test"].runtimeClasspath.printClassPath("test runtime") } }
         }
+
+        run configureCompilerClasspath@ {
+            val bootstrapCompilerClasspath by rootProject.buildscript.configurations
+            configurations.findByName("kotlinCompilerClasspath")?.let {
+                dependencies.add(it.name, files(bootstrapCompilerClasspath))
+            }
+        }
     }
 }