How to change the current Dart SDK version?

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I ran the following commands in my foo project:

iDecode@iDecodes-Mac foo % pub get
Resolving dependencies... 
The current Dart SDK version is 2.7.2.

Because foo requires SDK version >=2.12.0 <3.0.0, version solving failed.
iDecode@iDecodes-Mac foo % flutter --version
Flutter 2.6.0-11.0.pre • channel dev
Tools • Dart 2.15.0 (build 2.15.0-116.0.dev)

My pubspec.yaml file has:

environment:
  sdk: '>=2.12.0 <3.0.0'

As you can see my current Dart SDK version is set to 2.7.2, my project is targeting a min of 2.12.0 and Dart SDK installed on my machine is 2.15.0. So, how do I change the current Dart SDK version?

This is my ~/.zshrc file

export PATH=/flutter/bin:$PATH
export PATH=$PATH:/$HOME/Library/Android/sdk/platform-tools/
export PATH="$PATH:/$HOME/flutter/bin"
export PATH="$PATH":"$HOME/.pub-cache/bin"
export JAVA_HOME=$(/usr/libexec/java_home)
7 Answers

It seems like you installed Flutter/Dart SDK somewhere using Homebrew. Use which flutter and which dart to see the actual Flutter/Dart command that is taking effect. Once you find where your Dart SDK is you can use

brew uninstall dart

After this when you run which dart it will now point to where your Flutter SDK was installed.

You can also try this way: Just download that specific flutter version from here. and just set the flutter version in your editor and try to run it will run that specific flutter version but make sure you can't run that with terminal commands. So you need to handle all commands from the Tools option.

set flutter version

Must Run commands from here

Flutter comes with dart by default. Suggestion is to delete old flutter, delete .zshrc and download the latest stable version 2.5.3 for your mac and then give path for it in your .zshrc. Other method is switch to flutter stable by running flutter channel stable and then give flutter upgrade command so it will catch all the stuff from git in you local machine and you'll be good to go.

Simply go to the location where Dart SDK is kept and delete that and install a new Dart SDK version from the official website which is

https://dart.dev/get-dart

I had that same issue

Resolving dependencies... (5.3s) The current Dart SDK version is 2.17.0.

Because talk_to_me depends on browser >=0.3.1+1 which requires SDK version <2.0.0, version solving failed I think we need to uninstall dart and install the correct version

To uninstall dart:

sudo apt purge dart

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