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I want to make use of typedefs for variables in Dart thus I am trying to update minimum dart version to 2.14.0.
When I change environment to

environment:
  sdk: ">=2.14.0 <3.0.0"

I get the following error

[project] flutter pub get
Running "flutter pub get" in project...                      
The current Dart SDK version is 2.14.0-377.0.dev.

Because project requires SDK version >=2.14.0 <3.0.0, version solving failed.
pub get failed (1; Because project requires SDK version >=2.14.0 <3.0.0, version solving failed.)
exit code 1

Now I am confused what >= means if my version is 2.14.something and it does not satisfy condition >=2.14.0.
Any idea what's going on?

flutter doctor
[√] Flutter (Channel dev, 2.5.0-5.0.pre, on Microsoft Windows [Version 10.0.19043.1110], locale en-GB)
...
Chris
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1 Answers1

4

The version of the Dart SDK you have installed is 2.14.0-377.0.dev; the -377.0.dev part indicates that it is a development release (a pre-release), which cannot satisfy a requirement for a stable version of 2.14.0 as required by your pubspec.yaml constraints.

(Imagine that a development release introduced some new feature before some major bug was noticed and fixed. If your package depends on that feature, you probably would not want an unstable development release to satisfy your package's dependency requirement by default.)

You can set sdk: ">=2.14.0-0 <3.0.0" instead (note the -0) to indicate that you accept development versions of 2.14.0.

jamesdlin
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