The macos implementation of url_launcher.
Please set your constraint to url_launcher_macos: '>=0.0.y+x <2.0.0'
The plugin has reached a stable API, we guarantee that version 1.0.0 will be backward compatible with 0.0.y+z. Please use url_launcher_macos: '>=0.0.y+x <2.0.0' as your dependency constraint to allow a smoother ecosystem migration. For more details see: https://github.com/flutter/flutter/wiki/Package-migration-to-1.0.0
This package has been endorsed, meaning that you only need to add url_launcher as a dependency in your pubspec.yaml. It will be automatically included in your app when you depend on package:url_launcher.
This is what the above means to your pubspec.yaml:
... dependencies: ... url_launcher: ^5.4.1 ...
If you wish to use the macos package only, you can add url_launcher_macos as a dependency:
... dependencies: ... url_launcher_macos: ^0.0.1 ...