It seems[1] there's a flag called useIncrementalCompilation which is indeed enabled by default but doesn't actually cause any incremental compilation to happen.

It seems[1] there's a flag called useIncrementalCompilation which is indeed enabled by default but doesn't actually cause any incremental compilation to happen. Setting the flag to false causes it to compile only changed files, but this will give incorrect results, for the reasons described in the Kotlin blog post. [1] https://stackoverflow.com/a/49700942 https://stackoverflow.com/a/49700942