[Bug]: Migrate Plugin to Built-in Kotlin to prevent future build failures

[docthubmobileapp]

Platform

Android 12+

Plugin

package_info_plus: ^9.0.1

Version

9.0.1

Flutter SDK

3.44.2

Steps to reproduce

I'm using Flutter 3.44.2 and get the warning that my plugin applies the Kotlin Gradle Plugin (KGP). Future versions of Flutter will fail to build. Please migrate this plugin to use Flutter's Built-in Kotlin as described in the official guide

Code Sample

Logs

WARNING: Your Android app project: app located at: /Users/Apple/Desktop/Mobile/Projects/test_app/android/app/build.gradle
applies the Kotlin Gradle Plugin, which will cause build failures in future versions of Flutter. 
Please migrate your app to Built-in Kotlin using this guide: https://docs.flutter.dev/release/breaking-changes/migrate-to-built-in-kotlin/for-app-developers

WARNING: Your app uses the following plugins that apply Kotlin Gradle Plugin (KGP): device_info_plus, facebook_app_events, file_picker, fluttertoast, mobile_scanner, package_info_plus, share_plus
Future versions of Flutter will fail to build if your app uses plugins that apply KGP.

Please check the changelogs of these plugins and upgrade to a version that supports Built-in Kotlin.
If no such version exists, report the issue to the plugin. If necessary, here is a guide on filing 
an issue against a plugin: https://docs.flutter.dev/release/breaking-changes/migrate-to-built-in-kotlin/for-app-developers#report-incompatible-kotlin-gradle-plugin-usage-to-plugin-authors

If you are a plugin author, please migrate your plugin to Built-in Kotlin using this guide: https://docs.flutter.dev/release/breaking-changes/migrate-to-built-in-kotlin/for-plugin-authors

Flutter Doctor

Flutter (Channel stable, 3.44.2, on macOS 26.5.1 25F80 darwin-arm64, locale en-IN) [696ms]
    • Flutter version 3.44.2 on channel stable at /Users/Apple/Desktop/Mobile/SDKFlutterPath/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision c9a6c48423 (7 days ago), 2026-06-10 15:52:41 -0700
    • Engine revision 77e2e94772
    • Dart version 3.12.2
    • DevTools version 2.57.0
    • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-native-assets,
      no-enable-swift-package-manager, omit-legacy-version-file, enable-lldb-debugging, enable-uiscene-migration

[✓] Android toolchain - develop for Android devices (Android SDK version 36.1.0) [2.3s]
    • Android SDK at /Users/Apple/Library/Android/sdk
    • Emulator version 36.2.12.0 (build_id 14214601) (CL:N/A)
    • Platform android-36, build-tools 36.1.0
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
      This is the JDK bundled with the latest Android Studio installation on this machine.
      To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.10+-117844308-b1163.108)
    • All Android licenses accepted.

Checklist before submitting a bug

• I searched issues in this repository and couldn't find such bug/problem
• I Google'd a solution and I couldn't find it
• I searched on StackOverflow for a solution and I couldn't find it
• I read the README.md file of the plugin
• I'm using the latest version of the plugin
• All dependencies are up to date with flutter pub upgrade
• I did a flutter clean
• I tried running the example project