title: How can I set Kotlin compiler options in my Android Studio project, when I can't use Gradle?
body: <p>For a library I'm using, I get an error on some of the overridden methods:</p>
  <pre><code>Inheritance from an interface with '@JvmDefault' members is only allowed with -Xjvm-default option
  </code></pre>
  <p>The answer prior to my Bumblebee upgrade was to use kotlinOptions in the app build.gradle:</p>
  <pre><code>android {
  
      kotlinOptions {
          freeCompilerArgs = ['-Xjvm-default=compatibility']
          jvmTarget = &quot;1.8&quot;
      }
  </code></pre>
  <p>but now, kotlinOptions always breaks the build:</p>
  <pre><code>No signature of method: build_5rl9tbmrzydf364yqkdyvcpyq.android() is applicable for argument types: (build_5rl9tbmrzydf364yqkdyvcpyq$_run_closure1) values: [build_5rl9tbmrzydf364yqkdyvcpyq$_run_closure1@60f02a40]
  </code></pre>
  <p>so where else can I set the compiler options for Kotlin in Android Studio Bumblebee?</p>
  <p>Or, how can I fix the build so that kotlinOptions works again?</p>