In Kotlin 1.7.0, we've reworked incremental compilation for project changes in cross-module dependencies. The new approach lifts previous limitations on incremental compilation. It’s now supported when changes are made inside dependent non-Kotlin modules, and it is compatible with the Gradle build cache. Support for compilation avoidance has also been improved. All of these advancements decrease the number of necessary full-module and file recompilations, making the overall compilation time faster. The new scheme for incremental compilation is currently Experimental and supports only the JV

Starting with Kotlin 1.7.0, you can create build reports for Kotlin compiler tasks. Reports contain durations of different compilation phases and reasons why incremental compilation could not be used. This functionality is still Experimental, so the list of metrics may change. TRY BUILD REPORTS Build reports are useful when you want to investigate issues with compiler tasks. For example, when a Gradle build takes too much time, and it’s quite difficult to understand the root cause of poor performance. Another example is when the compilation time of the same projects differs: sometimes it