Workaround for commonSourceSet issue in kotlin compile tasks

build.gradle

tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompileWithWorkers) { task ->
        project.gradle.taskGraph.beforeTask {
            if (task == it) {
                // Get the 'commonSourceSet' property and make it accessible
                def field = task.class.superclass.superclass.superclass.getDeclaredField('commonSourceSet')
                field.setAccessible(true)

                // Store the current value, and if the 'source' property contains everything in 'commonSourceSet', 
                // clear it out for the purposes of snapshotting (i.e. the directories are already tracked by a different
                // input property)
                def originalCommonSourceSet = field.get(task)
                project.rootProject.buildScan.value "${task.path}.source", task.source.files.join("\n")
                if (!originalCommonSourceSet.files.isEmpty() && task.source.files.containsAll(originalCommonSourceSet.files)) {
                    field.set(task, project.files())
                } else {
                    // If there is something in 'commonSourceSet' not in 'source' track it so we can troubleshoot 
                    project.rootProject.buildScan.value "${task.path}.commonSourceSet", originalCommonSourceSet.files.join("\n")
                }                    

                // Right before the task executes (after snopshotting), set the property back to its original value
                task.doFirst {
                    field.set(task, originalCommonSourceSet)
                }
            }
        }   
    }