Flutter clean command causes null safety errors

Question

Ever since null-safety was introduced to Flutter, when I do flutter clean, the whole project switches to null-safety.

I can not update my whole project to null-safety quite yet as many packages I use have not migrated.

How can I do a flutter clean without getting thousands of errors telling me that non-nullable item must be initialized first...

I am currently on Flutter 1.24.0-10.2-pre, channel beta.

pubspec.yaml includes the following

environment:
  sdk: ">=2.2.2 <3.0.0"

Answer 1

I get exactly the same issue. I haven't found a fix yet but if you open the pub spec.yaml file and save it without making changes it solves the issue until you next run flutter clean.