Flutter App stopped building on android: cannot find symbol

[yvanvds]

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• I confirm I have searched the Docs, Codemagic Sample Projects, and GitHub Discussions.
• I confirm the software versions on my local computer match the ones in CI environment (e.g. Xcode version, Gradle version). See here
• I confirm I am able to do a fresh clone of the repository and build the project on my local computer.

Which mobile framework are you using?

Flutter (Dart)

Steps to reproduce

Try to build an Android flutter app on codemagic that uses image_picker or google_sign_in. (maybe more packages, but I stopped after two).

Expected results

The app should build, and it did when I built it last month. It also builds locally.

Actual results

The symbol PluginRegistry.Registrar cannot be found. After reading up, I found that google is phasing out this technique, and plugins are being updated. I first got the error on image_picker. I got around that by specifying the version for image_picker_android and specifying the newest version. That should not be needed, because this version is not even refered to in the most recent image_picker package. In pubspec.yaml:

image_picker: ^1.1.2
image_picker_android: ^0.8.12+21 # temporary fix for codemagic

This solves the problem with image_picker. But now I get the same error on the google_sign_in package:

/Users/builder/.pub-cache/hosted/pub.dev/google_sign_in_android-6.1.22/android/src/main/java/io/flutter/plugins/googlesignin/GoogleSignInPlugin.java:72: error: cannot find symbol
  public void setUpRegistrar(@NonNull PluginRegistry.Registrar registrar) {
                                                    ^
  symbol:   class Registrar
  location: interface PluginRegistry

This makes me think the issue is not a fluke with a single package. Moreover, these are packages that are supported by the flutter team. They are decently up to date. I've tried and checked versions of Dart, Flutter, Java and Gradle, but I cannot find why this goes wrong on codemagic now.

Build id (optional)

67c4c09cd6bc66c046e26b9f

[yvanvds]

Nevermind. I got the same error when I updated flutter locally. Turns out that specifying the flutter version in pubspec.yaml does not matter because it is set in the workflow editor.