Kotlin Symbol Processing

What's Changed

• Fix OOMs caused by unstopped coroutine Dispatcher threads by moving KSP task cache to a gradle build service (#2817)
• Sanitize ':' in internal-name module suffix so KSP works with Kotlin 2.4.0 default module names (#2964)
• Filter source file trees in KspAATask to restore NO-SOURCE skipping behaviour (#2947)
• Fix R-class resolution in KSP when AGP 9 built-in Kotlin is enabled (#2857)
• Fix KSP2 incremental cache path normalization mismatch (#2854)
• Normalize line endings for KspAATask source roots to prevent cross-platform remote build cache misses (#2849)
• Fix bug where KSP incremental compilation does not consider library class references in annotations (#3011)
• Consume all Kotlin sources in KSP to support other code generators (#3001)
• Fix configuration cache invalidation in klib cross-compilation check (#3014)
• Memoized hash code for KSTypeImpl to speed up processing (#2896)
• Fix incorrect name generation for data classes annotated with @JvmRecord (#2813)
• Include kotlinx.coroutines in the distributed uber jar symbol-processing-aa-embeddable (#2938)
• New debugging features for incremental compilation, including additional logging and dependency graph visualization (#3015)
• Deprecate the ksp(...) Gradle configuration in Kotlin Multiplatform (KMP) projects in favor of target-specific configurations (#2956). Note: Non-KMP projects are also affected. For migration details, see the documentation.

Contributors

• Thanks to @mvanhorn, @Yong-yuan-X, @MariusVolkhart, @shmuelr and everyone who reported bugs and participated in discussions!

Full Changelog: https://github.com/google/ksp/compare/2.3.9...2.3.10

What's Changed

• Cleaned up native cross-compilation support checks to prevent Gradle Configuration Cache invalidation (#2953)
• Fixed a compilation performance regression in in PsiResolutionStrategy introduced in 2.3.8 (#2948)

Contributors

• Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: https://github.com/google/ksp/compare/2.3.8...2.3.9

What's Changed

• Enabled new default annotation use-site rules in Kotlin's Analysis API (see KEEP 402) for more information. Note: KSP was already mostly compatible with KEEP 402, so there shouldn't be any visible changes for users. (#2888)
• Enabled ksp.project.isolation by default when Gradle isolated projects are enabled (#2866)
• Improved getSymbolsWithAnnotation performance by implementing a new PSI-based resolution strategy (#2816)

Contributors

• Thanks to @hugoncosta and everyone who reported bugs and participated in discussions!

Full Changelog: https://github.com/google/ksp/compare/2.3.7...2.3.8

What's Changed

• Bumped Kotlin target language version to 2.3 (#2821)
• Fixed crash caused by upstream dependency (#2856)
• Fixed support for Gradle Isolated Projects (#2844)

Contributors

• Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: https://github.com/google/ksp/compare/2.3.6...2.3.7

What's Changed

• Fixed an issue where module recompilation would fail on Windows environments when KSP2 was enabled (#2774)
• Resolved an issue where generated Java sources were ignored when using Android Kotlin Multiplatform with IP-compatible paths (#2744)
• Fixed a KSP version 2.3.5 CI error exception that does not break build checks (#2763)
• Added symbol-processing-api and common-deps to compile dependencies (#2789)
• Improved the detection of built-in Kotlin by removing the reliance on KotlinBaseApiPlugin (#2772)
• A back-port of a performance optimization in the Intellij / Analysis API (2785 )
• Added support for nested typealias Kotlin language feature #2588
• Exclude jdbc package from log4j to prevent vulnerability issue #2651

Contributors

• Thanks to @salmanmkc, @jaschdoc, @gurusai-voleti and everyone who reported bugs and participated in discussions!

Full Changelog: https://github.com/google/ksp/compare/2.3.5...2.3.6

What's Changed

• A new Gradle property flag was added to mute the warnings about KSP1 usage. You can enable this by setting warn.on.ksp1.usage=false in your gradle.properties file.

Full Changelog: https://github.com/google/ksp/compare/2.2.21-2.0.4...2.2.21-2.0.5

What's Changed

• KSPCoreEnvironment.instance_prop leaks memory when used programmatically #2742
• Missing first annotation argument when toByte is used #2672
• Fix circular dependency between KSP and KAPT in AGP 9.0 #2743

Contributors

• Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: https://github.com/google/ksp/compare/2.3.4...2.3.5

What's Changed

• KSP ignores sources in Kotlin directory #2730
• Avoid recording Java symbol lookups in non-incremental builds #2728
• Clean up ThreadLocals when processing is done #2709

Contributors

• Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: https://github.com/google/ksp/compare/2.3.3...2.3.4

What's Changed

• Migrate away from a deprecated compilerOptions KGP API #2703

Contributors

• Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: https://github.com/google/ksp/compare/2.3.2...2.3.3

What's Changed

Note: This release is a hotfix for a regression introduced in 2.3.1

• Fixed an issue where KSP incorrectly processed specific nullable annotations from Java interfaces, leading to incorrect nullability in the generated Kotlin code #2696
• Fixed a regression introduced in #2656 that caused runtime failures for projects using AGP 8.8.0 and older due to an incompatible, version-specific type check. #2694

Contributors

Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: https://github.com/google/ksp/compare/2.3.1...2.3.2