One of the stated goals of Kotlin is to compile at least as fast as Java.
This, plus the 100% java interoperability, are some of the key points that attract me to Kotlin.
In the current state, using the Kotlin plugin in IntelliJ, I find compilation takes about 2-4x longer than java (one example, from 3 seconds to 11 seconds).
This is something that keeps me from using Kotlin currently. I develop games using Java/libgdx and the fast compilation cycle is critical for iterative testing. I would really like to use Kotlin, though.
Assuming it is not because of incorrect settings on my part, is there a roadmap for optimizing compilation speed for Kotlin? Also, is the goal for compiling as fast as Java still considering achievable?