Prepare Kotlin 2.4.20 support - #202
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Registers 2.4.20[2.4.20-Beta1] in versionSupport.kotlin and switches dev-support to it, following the same pattern used for previous new-baseline bumps (e.g. 2.3.0-Beta2, 2.4.0). Kotlin 2.4.20 changes three compiler-internal APIs SKIE depends on: - `KotlinLibrary.isFromKotlinNativeDistribution` was split into `isImplicitlyLoadedFromKotlinNativeDistribution` and `isExplicitlySpecifiedByUserInCLIArgument`; defaultLibraries.kt now uses the renamed property. The prior 2.4.0.. shim is capped at the 2.4.0 baseline. - `CompilerConfiguration.messageCollector` is now gated behind the `MessageCollectorAccess` opt-in marker; KonanConfigCompat.kt's reportCompilerMessage shim opts in explicitly for 2.4.20+. - `IrSimpleFunction` gained a new abstract member `companionExtensionClass` (companion-extension support). DummyIrSimpleFunction — a short-lived symbol-table placeholder that is never read past its declaration (see FunctionTemplate.declareSymbol) — stubs it the same way as its other members. The 2.1.20.. source set is capped at 2.4.0 and a 2.4.20.. copy adds the new override. - CodegenPhaseInterceptor.kt's debug-prefix-map workaround switched from poking NativeGenerationState.context.messageCollector directly (removed in 2.4.20) to the existing cross-version reportCompilerMessage compat shim, which already covers every supported Kotlin version. Verified by compiling :kotlin-compiler:kotlin-compiler-linker-plugin:compileKotlin against 2.0.0, 2.4.0(2.4.10), and 2.4.20[2.4.20-Beta1]. Since 2.4.20 is still in Beta, this targets the version as [2.4.20-Beta1] per the existing pre-release convention; the compiler-version override can be dropped once the 2.4.20 release ships. Claude-Session: https://claude.ai/code/session_01NRKECdAMmkWgARLzE2sjUo
Seeds SKIE/acceptance-tests/libraries/src/test/resources/tests/2.4.20 by copying
the 2.4.0 libraries.lock and expected-failures verbatim, following the same
pattern used when 2.4.0 was added (see "Copy library tests lockfile and expected
failures from 2.3.20 for 2.4.0"). The actual libraries.lock/expected-failures
content will need to be validated and updated by the real
:acceptance-tests:libraries:test run against 2.4.20 in CI, since that requires
resolving and compiling ~6.7k external KMP libraries — not something feasible to
run to completion outside CI.
Adds smoke-tests-2_4_20-{github,self-hosted}.yml (generated via the
generateCIActions Gradle task, now that the seeded libraries.lock gives it a
library count to batch) and bumps the default Kotlin version in smoke-tests.yml
/ smoke-tests-manual.yml from 2.4.0 to 2.4.20, matching the exact pattern from
"Add CI workflows for Kotlin 2.4.0".
Claude-Session: https://claude.ai/code/session_01NRKECdAMmkWgARLzE2sjUo
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Summary
Preparing SKIE to be ready for Kotlin 2.4.20
Stacked on touchlab/SKIE #201 (Kotlin 2.4.10 patch support)
Changes
KotlinLibrary.isFromKotlinNativeDistributionwas split intoisImplicitlyLoadedFromKotlinNativeDistribution/isExplicitlySpecifiedByUserInCLIArgument.defaultLibraries.ktis updated to use the renamed property; the prior2.4.0..shim is capped at the2.4.0baseline.CompilerConfiguration.messageCollectoris now gated behind theMessageCollectorAccessopt-in marker.KonanConfigCompat.kt'sreportCompilerMessageshim opts in explicitly for 2.4.20+.IrSimpleFunctiongained a new abstract membercompanionExtensionClass(companion-extension support).DummyIrSimpleFunction— a short-lived symbol-table placeholder that's never read past its declaration (seeFunctionTemplate.declareSymbol) — stubs it the same way as its other members. The2.1.20..source set is capped at2.4.0and a2.4.20..copy adds the new override.CodegenPhaseInterceptor.kt's debug-prefix-map workaround switched from pokingNativeGenerationState.context.messageCollectordirectly (removed in 2.4.20) to the existing cross-versionreportCompilerMessagecompat shim, which already covers every supported Kotlin version — this is a version-agnostic fix insrc/main.Verified locally by compiling
:kotlin-compiler:kotlin-compiler-linker-plugin:compileKotlinagainst2.0.0,2.4.0(2.4.10), and2.4.20[2.4.20-Beta1].The copied
libraries.lock/expected-failuresfor 2.4.20 are not yet validated against the new compiler — that requires the real:acceptance-tests:libraries:testrun (~6.7k external KMP libraries) in CI, which isn't feasible to run to completion outside CI. Expect some libraries to need new/updated expected-failure entries once that runs.Since 2.4.20 is still in Beta, this targets
[2.4.20-Beta1]per the existing pre-release convention; the compiler-version override can be dropped once the 2.4.20 release ships.