cargo-workspace: cascaded dependent bumps ignore the active prerelease window

[stefan-gorules]

What happens

When a cargo workspace is in a prerelease window (a PrereleaseVersioningStrategy, e.g. prerelease: true with prereleaseType: "beta"), crates that are released directly get the correct prerelease bump (1.0.0-beta.0 → 1.0.0-beta.1).

But a crate that is only cascade-bumped - i.e. it has no release commits of its own and is force-bumped solely because it depends on a crate that is being released - gets the wrong version. Instead of incrementing the prerelease counter, it bumps the base patch and keeps the stale prerelease suffix:

1.0.0-beta.0  →  1.0.1-beta.0   ❌  (expected: 1.0.0-beta.1)

So in a single release PR you end up with two inconsistent paths:

• core/* (directly released) → 1.0.0-beta.1 ✅
• bindings/* (only a dependent of core) → 1.0.1-beta.0 ❌

Root cause

CargoWorkspace.bumpVersion always uses a raw PatchVersionUpdate, which is unaware of the configured versioning strategy:

src/plugins/cargo-workspace.ts

protected bumpVersion(pkg: CrateInfo): Version {
  const version = Version.parse(pkg.version);
  return new PatchVersionUpdate().bump(version);
}

PatchVersionUpdate.bump increments patch and carries the existing preRelease string through verbatim, which is exactly the 1.0.0-beta.0 → 1.0.1-beta.0 behavior above.

This was already fixed for node-workspace

node-workspace had the identical bug and it was fixed in #2249 (fix: support-node-workspace-plugin-prerelease, commit 88dc416) by delegating to the configured strategy instead of hard-coding a patch bump:

protected bumpVersion(pkg: Package): Version {
  const version = Version.parse(pkg.version);
  const strategy = this.strategiesByPath[pkg.path];

  if (strategy) return strategy.versioningStrategy.bump(version, []);
  return new PatchVersionUpdate().bump(version);
}

cargo-workspace already stores strategiesByPath in preconfigure(), just like node-workspace, so the same one-line delegation applies directly.

References

• node-workspace fix: fix: support-node-workspace-plugin-prerelease #2249 (88dc416)

[anishesg]

Opened #2836 with a fix for this.

[stefan-gorules]

Hi @anishesg, just saw that the PR unfortunately got closed due to inactivity but it'd be a very appreciated bug fix.

@zhumin8, sorry for bumping but would it be possible to take a look at above PR and potentially have it merged? At the moment it's quite annoying to have to correct versions manually while in beta inside of Rust based projects. Appreciate all the work on the project, thanks!