Migrate to AGP 9

[Copilot]

AGP 9 makes com.android.application and com.android.library incompatible with kotlin.multiplatform in the same module.

Version update

• AGP 8.13.2 → 9.1.1 in buildSrc/build.gradle.kts

Library modules (Path A)

• Convention plugin: com.android.library → com.android.kotlin.multiplatform.library
• androidTarget {} + top-level android {} → kotlin { android { namespace; compileSdk } }
• Removed publishLibraryVariants (single-variant model in new plugin)
• Unique namespaces per module derived from project path (AGP 9 enforces android.uniquePackageNames=true)

Demo module (Path B)

• Split Android entry point into new demo-android-app module with pure com.android.application
• Demo module converted from com.android.application to com.android.kotlin.multiplatform.library
• Moved MainActivity, AndroidManifest.xml, resources to demo-android-app/

Source set hierarchy workaround

withAndroidTarget() in applyDefaultHierarchyTemplate doesn't recognize the Android target created by com.android.kotlin.multiplatform.library. Added explicit dependsOn:

// In lib-conventions-without-publishing.gradle.kts and demo/build.gradle.kts
sourceSets.androidMain {
    dependsOn(sourceSets.getByName("composeUiMain"))
}

Both publishToMavenLocal and check (including apiCheck) pass.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• add-skill.vercel.sh
  • Triggering command: /usr/local/bin/node node /home/REDACTED/.npm/_npx/ac0ed6aa23b37c1e/node_modules/.bin/skills add REDACTED --skill kotlin-tooling-agp9-migration (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[sonarqubecloud]

Quality Gate failed

Failed conditions
2 Security Hotspots

See analysis details on SonarQube Cloud