given:
        buildFile << """
            ${ruleBasedTasks()}

            class MyPlugin extends RuleSource {
                @Mutate
                void addTasks(ModelMap<EchoTask> tasks) {
                    tasks.create("foo") {
                        message = "foo message"
                    }
                }
            }

            apply type: MyPlugin

                @Mutate
                void addTasks(ModelMap<Task> tasks) {
                    tasks.create("executed") {
                        dependsOn ":b:dependency"
                    }
                }
            }

            class ProjectBRules extends RuleSource {
                @Mutate
                void addTasks(ModelMap<Task> tasks) {
                    tasks.create("dependency")