Posted by means of Márton Braun, Developer Family members Engineer

The Kotlin compiler is being rewritten for Kotlin 2.0. The brand new compiler implementation–codenamed K2–brings with it vital construct velocity enhancements, compiling Kotlin code as much as two times as rapid as the unique compiler. It additionally has a extra versatile structure that can permit the advent of latest language options after 2.0.

Check out the brand new compiler

With Kotlin 1.9, K2 is now to be had in Beta for JVM objectives, together with Android tasks. To assist stabilize the brand new compiler and be sure to’re able for Kotlin 2.0, we inspire you to take a look at compiling your tasks with the brand new compiler. For those who run into any problems, you’ll be able to file them on the Kotlin factor tracker.

To check out the brand new compiler, replace to Kotlin 1.9 and upload the next in your mission’s gradle.houses report:

kotlin.experimental.tryK2=true

Be aware that the brand new compiler must no longer be used for manufacturing builds but. A just right means for making an attempt it early is to create a separate department for your mission for compiling with K2. You’ll in finding an instance of this within the Now in Android repository.

Tooling make stronger

Plugins and equipment that rely at the Kotlin compiler frontend may even should be up to date so as to add make stronger for K2. Some equipment have already got experimental make stronger for construction with K2: the Jetpack Compose compiler plugin helps K2 beginning in 1.5.0, which is suitable with Kotlin 1.9.

Android Lint additionally helps K2 beginning in model 8.2.0-alpha12. To run Lint on K2, improve to this model and upload android.lint.useK2Uast=true in your gradle.houses report. Be aware that any customized lint regulations that depend on APIs from the outdated frontend should be up to date to make use of the research API as a substitute.

Including K2 make stronger in different equipment remains to be in growth: KSP and KAPT duties these days fall again to the usage of the outdated compiler when construction your mission with K2. On the other hand, compilation duties can nonetheless run the usage of K2 when those equipment are used.

Android Studio additionally depends upon the Kotlin compiler for code research. Till Android Studio has make stronger for K2, construction with K2 may lead to some discrepancies between the code research of the IDE and command line builds in positive edge circumstances.

For those who use any further compiler plugins, take a look at their documentation to look whether or not they’re suitable with K2 but.

Get began with the K2 compiler as of late

The Kotlin 2.0 Compiler provides vital enhancements that will help you send updates sooner, be extra productive, and spend extra time specializing in what makes your app distinctive.

It already works with Jetpack Compose and we now have a roadmap to make stronger make stronger in different equipment, together with Android Studio, KSP, and compiler plugins. Now is a smart time to check out it for your app’s codebase and supply comments associated with Kotlin, Compose, or Lint.