flutter: “>=0.2.4 <2.0.0” pub get failed (65) when cloud_firestore package is used in pubspec.yaml

Question

When I tried to add the google_sign_in,flutter_auth and cloud_firestore it is throwing me the error that flutter: ">=0.2.4 <2.0.0".I tried to run flutter dector -v the output is

[✓] Flutter (Channel stable, v1.5.4-hotfix.2, on Linux, locale en_US.UTF-8) • Flutter version 1.5.4-hotfix.2 at /home/ramu/Downloads/tools/flutter • Framework revision 7a4c33425d (4 weeks ago), 2019-04-29 11:05:24 -0700 • Engine revision 52c7a1e849 • Dart version 2.3.0 (build 2.3.0-dev.0.5 a1668566e5)

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3) • Android SDK at /home/ramu/Android/Sdk • Android NDK location not configured (optional; useful for native profiling support) • Platform android-28, build-tools 28.0.3 • ANDROID_HOME = /home/ramu/Android/Sdk • Java binary at: /snap/android-studio/73/android-studio/jre/bin/java • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01) • All Android licenses accepted.

[✓] Android Studio (version 3.3) • Android Studio at /snap/android-studio/73/android-studio • Flutter plugin version 34.0.1 • Dart plugin version 182.5215 • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)

[✓] VS Code (version 1.34.0) • VS Code at /usr/share/code • Flutter extension version 3.0.2

[!] Connected device ! No devices available

! Doctor found issues in 1 category.

firebase_auth: ^0.6.2+1 google_sign_in: ^3.2.2 cloud_firestore: ^0.8.2+3

Answer 1

Try updating your environment sdk in pubspec.yaml from >=0.2.4 <2.0.0 to >=2.1.0 <3.0.0

The upper bound for your environment sdk is below version 2.0.0 but google_sign_in ,firebase_auth, and cloud_firestore requires at least >=2.0.0-dev.28.0 (which is newer then what you have specified for your project).

Answer 2

Try to delete that project folder and create a new one and paste all the code in the newly created project.