How can I avoid prerelease versions in Flutter?

Question

Because null safety in flutter is relatively new, I had to depend on some prerelease versions. However for some packages I would like to use the stable version. The problem is: flutter don't let me use version 1.0.0 of hive_generator. It always selects 0.9.0-nullsafety.0.

dev_dependencies:
  hive_generator: 1.0.0

Because every version of fast_i18n from git depends on build ^2.0.0 and hive_generator >=0.9.0-nullsafety.0 depends on build ^1.5.2, fast_i18n from git is incompatible with hive_generator >=0.9.0-nullsafety.0.
So, because ikus_app depends on both fast_i18n from git and hive_generator 1.0.0, version solving failed.
pub get failed (1; So, because ikus_app depends on both fast_i18n from git and hive_generator 1.0.0, version solving failed.)

Edit 1:

It seems that flutter prefers prereleases when prereleases are in dependency graph:

https://dart.dev/tools/pub/publishing#publishing-prereleases

Note: If a stable package in the dependency graph depends on a prerelease, then pub chooses that prerelease instead of a stable release.

Is there anyway to opt-out one package?

Answer 1

My solution was to use the git version of hive_generator, because it must depend on build ^2.0.0.

I forgot that hive_generator 1.0.0 still depends on build ^1.5.2.

hive_generator >=0.9.0-nullsafety.0 is a display bug I think.