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rust-embedded / cortex-m

Low level access to Cortex-M processors
Apache License 2.0
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`master` is out of date (0.7.4 vs 0.7.7) #547

Closed BartMassey closed 4 months ago

BartMassey commented 4 months ago

It looks like the release version of cortex-m on crates.io is 0.7.7, but master and staging here are 0.7.4. v0.7.x seems to contain the current version.

Permission to merge v0.7.x onto master?

adamgreig commented 4 months ago

The reason is that master is tracking a few breaking changes, so it will eventually be published as 0.8, but we don't bump the version until publishing. In the meantime, several backwards-compatible fixes (and some backports) were made in the 0.7.x branch and released as new 0.7 versions, but nothing that's not also present in master.

This is confusing but is currently how we generally handle working towards a new breaking-change version. We do have a plan to revamp cortex-m a bit before 0.8 to reduce the impact of breaking changes - the reason we haven't already released 0.8 is that currently it breaks the whole cortex-m ecosystem when we do (new PACs, new HALs, new drivers, etc) and requires/usually gets a semver-hack release in the old version, but that gets harder and harder to do with each release, hence the plan to make it less ecosystem-breaking.

BartMassey commented 4 months ago

Thanks much for the explanation!