Rachel (@rachelnabors) and Pascal (@passy) are back for another interview about Android infrastructure at FB. Thomas joins them to share how the internal Kotlin adoption has progressed since the last time we checked in with Sergey on the topic. In the deeply technical discussion, the three discuss how ABI generation speeds up builds, which Kotlin language features still need to be used with caution and what a plan to 100% Kotlin for Android might look like.