Upgrade to Android Gradle Plugin 9.1.0#2318
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- Bump agp to 9.1.0, androidTools to 32.1.0
- Fix CommonExtension usage: no longer takes type parameters in AGP 9
- Propagate ANDROID_HOME to paparazzi-preview-lints test sub-builds;
AGP 9 requires local.properties for SDK location, env var alone is
not sufficient in nested builds
- Remove ~89 explicit kotlin-android plugin declarations from fixture
build files; AGP 9 defaults android.builtInKotlin=true, which
auto-applies Kotlin and makes the explicit plugin redundant
- Remove kotlinOptions { jvmTarget } blocks from fixture build files;
jvmTarget already defaults from compileOptions.targetCompatibility
- Migrate report-snapshots fixture from android { kotlinOptions {} }
to top-level kotlin { compilerOptions {} }; AGP 9 defaults
android.newDsl=true which no longer supports kotlinOptions inside
android {}
- Remove android.builtInKotlin=false and android.newDsl=false compat
flags from root gradle.properties and applicable fixture properties
- Add android.onlyEnableUnitTestForTheTestedBuildType=false to
generated fixture gradle.properties; AGP 9 defaults this to true,
restricting unit tests to the debug variant only
- Remove build/generated/res/resValues/debug from 4 test assertions;
AGP 9 omits this path from variant.sources.res.all when no resValues
are configured
- Add test verifying resValues path is present when explicitly
configured (buildFeatures.resValues=true required in AGP 9)
- Retain android.builtInKotlin=false in multiplatform-plugin-with-android
and multiplatform-plugin-without-android fixtures; AGP 9 explicitly
blocks com.android.library + kotlin.multiplatform with builtInKotlin=true
This was referenced Apr 11, 2026
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@eboudrant as you wish 😊 |
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Summary
Upgrades AGP from 8.13.2 → 9.1.0 and removes all AGP 8 compatibility shims, leaving the project fully compliant with AGP 9 defaults.
What changed
libs.versions.toml—agp = "9.1.0",androidTools = "32.1.0"PaparazziPlugin.kt—CommonExtensionno longer takes type parameters in AGP 9paparazzi-preview-lints/build.gradle— propagateANDROID_HOMEto test sub-builds; AGP 9 requireslocal.propertiesfor SDK location, env var alone is not sufficient in nested buildsid 'kotlin-android'andkotlinOptions { jvmTarget }blocks; AGP 9 defaultsandroid.builtInKotlin=true, which auto-applies Kotlin and makes the explicit plugin redundant;jvmTargetis already implied bycompileOptions.targetCompatibilityreport-snapshots/build.gradle— migratedandroid { kotlinOptions {} }to top-levelkotlin { compilerOptions {} }; AGP 9 defaultsandroid.newDsl=true, which no longer supportskotlinOptionsinsideandroid {}gradle.properties(root) + 5 fixturegradle.propertiesfiles — removedandroid.builtInKotlin=falseandandroid.newDsl=falsecompat flagsPaparazziPluginTest.kt— addedandroid.onlyEnableUnitTestForTheTestedBuildType=falseto generated fixture properties (AGP 9 defaults this totrue, restricting unit tests to debug-only); removedbuild/generated/res/resValues/debugfrom 4 assertions (AGP 9 omits this path when noresValuesare configured); added new test verifying the path is present whenresValuesare explicitly configured (buildFeatures.resValues=trueis also required explicitly in AGP 9)Intentional carve-outs:
multiplatform-plugin-with-androidandmultiplatform-plugin-without-androidfixtures retainandroid.builtInKotlin=falseandandroid.newDsl=false— AGP 9 explicitly blocks thecom.android.library + kotlin.multiplatformcombination withbuiltInKotlin=true. These fixtures specifically test the legacy KMP path.Test plan
./gradlew buildpasses (91 tests, 0 failures)./gradlew :sample:testDebugpasses