Change the flax version to 0.4.2 (currently 0.5.2) will work So much for semver ...

Twisol · on June 28, 2022

0.y.z is kind of an "all bets are off" situation in semver: https://semver.org/#spec-item-4

> Major version zero (0.y.z) is for initial development. Anything MAY change at any time. The public API SHOULD NOT be considered stable.

Variant schemes like the one respected by Cargo (https://doc.rust-lang.org/cargo/reference/semver.html) aren't usually much different.

> Initial development releases starting with "0.y.z" can treat changes in "y" as a major release, and "z" as a minor release.