Meta-programming with KSP and Kotlin compiler plugins
summary
Claims that KSP runs noticeably faster than kapt (marketing says ~2×), that it has a stable processor API and Java source support, and that it only generates new Kotlin code (no expression-level edits) are all stated. Actual compiler work hits the IR: kotlin compiler plugins can add synthetic declarations, mutate IR at expression level, and enable things like Swift code generation for KMM (example: Sky) that successfully links into frameworks. Downsides: complex setup, unstable APIs across Kotlin releases, heavy testing burden, and stricter Kotlin/Native requirements.
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chapters (7)
- 0:00Start
- 0:54Agenda
- 12:33Compiler plugins
- 19:46SyntheticResolveExtension
- 20:41IrGenerationExtension
- 22:17Setting up
- 37:10Recap
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