[Bug]: genai package has unnecessary Flutter SDK dependency preventing pure-Dart CLI usage

[soumyarajbag]

Describe the bug/problem

Please describe the bug/problem here

The genai package currently has a hard dependency on the Flutter SDK. In its pubspec.yaml, it requires:

flutter:
  sdk: flutter

Additionally, ai_request_utils.dart imports package:flutter/foundation.dart solely to use debugPrint.

While similar issues were addressed for better_networking (e.g., #1360), this problem still exists in the genai package. This tight coupling to Flutter prevents the package from being used in pure Dart environments and blocks batch evaluation runs in headless Dart/CLI contexts.

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Steps to Reproduce the bug/problem

Please provide the steps to reproduce the behaviour. Screenshot(s)/image(s) are preferred to help explain it better

1. Create a pure Dart CLI application or package (without Flutter).

2. Add the genai package from this workspace as a dependency.

3. Run:

   dart pub get

4. Attempt to run a Dart script.

Result:

• It fails because the Flutter SDK is not available, or

• Compilation fails due to the import:

  import 'package:flutter/foundation.dart';

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Expected behavior

Description of what you expected to happen

The genai package should be a pure Dart library without any dependency on the Flutter SDK.

Utilities like debugPrint should be replaced with:

• print
• dart:developer's log()
• or a dedicated logging package

This would allow seamless usage in Dart CLI, backend services, and other non-Flutter environments.

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Device Info (The device where you encountered this issue)

• OS: MacOS (Applies to all Operating Systems)
• Version: Not Platform Specific
• Browser (only if you encountered the issue while running the web app): N/A

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Flutter Doctor

Please run the flutter doctor -v command and provide the details below:

# N/A - Architectural/Dependency issue.
[✓] Flutter (Channel stable)
[✓] Dart SDK version: 3.x

[bhumikanilesh]

Hello
I would like to work on this issue, my plan on solving this issue would be as follows :

1. I will remove Flutter imports and remove Flutter meta data from genai
2. Stop exporting Flutter widgets from genai and move the three config widgets into the app’s own widget layer.
3. Remove Flutter dependencies from genai and convert it to pure Dart.
4. Verify whether the package still inherits any Flutter coupling through better_networking.

[bhumikanilesh]

Hello @animator, @ashitaprasad

I have tested the fix in a simple Dart CLI app outside repo.
The good part is that the dart pub get works and the flutter is no longer being pulled as a dependency through pubspec.

The issue is when i try to run dart file with import 'package:genai/genai.dart';, it still fails because some widget files inside genai still depend on flutter.
The direct flutter dependency has been removed but genai is not usable as a full dart package, because main import path still ends up touching the flutter based widget files.

Should the expected fix be to separate the flutter widget part from the pure Dart Package entrypoint, so CLI users can safely import package:genai/genai.dart without flutter?

[animator]

You can send a PR @bhumikanilesh

[bhumikanilesh]

@animator
I have created a new PR #1639, the previous one (#1607) had been polluted with unrelated diff noise. Kindly check the latest PR #1639 .

[rajesh-puripanda]

genai package depends on Flutter — blocks non-Flutter use. I'll separate pure Dart logic from Flutter widgets using conditional imports. The core AI logic shouldn't need Flutter.

[rajesh-puripanda]

@foss42 I've outlined my approach above — I'm ready to implement this. Please assign this issue to me. Will submit a clean PR once assigned.