Cancelling "pub get" does not work

[DanTup]

• Add an invalid package name in pubspec of a Flutter app
• Click save
• Open the Output window
• Click Cancel on the "pub get" notification
• Note the process continues to run (and there's no way to cancel it)

[DanTup]

Adding this does not help:

if (this.process)
	this.process.kill();

I wonder if this is also related to dart-lang/sdk#42092, and may be fixed once that rolls into Flutter?

[DanTup]

I think the code above is required, but it doesn't currently work due to flutter/flutter#61357. I'll leave it out until that's fixed so I can confirm it works correctly.