Release & Versioning

Single source of truth

The root Cargo.toml version is the one authoritative version (including any -rc.N pre-release suffix). Everything else is derived from it — never hand-edit a version in a package manifest.

task version:sync propagates to two families

task version:sync (alias task versions:sync) runs, in order:

1. alef sync-versions — updates the alef-managed binding manifests (their own

version = core version). Targets are listed in alef.toml [workspace.sync] extra_paths (packages/python, packages/ruby, crates/xberg-node, packages/go, cli-proxy, …).

1. python3 scripts/sync_integration_versions.py — updates the integrations

under integrations/. These are NOT alef-managed, so alef never touches them.

Bump/set helpers chain both automatically: task version:bump:major|minor|patch, task version:set -- <version>. task version:check dry-runs both and fails on drift (sync_integration_versions.py --check).

Integrations are lockstep with core

The integration packages under integrations/ are versioned and published together with core across three ecosystems:

• Python → PyPI: langchain, llama-index (readers + node-parser), crewai, txtai, surrealdb.
• Java → Maven Central: spring-ai (io.xberg:spring-ai-xberg).
• npm → npm: n8n-nodes-xberg, langchain-xberg, llamaindex-xberg (@xberg-io/*).

scripts/sync_integration_versions.py sets, for each manifest:

• the package's own version — PEP 440 form for pyproject (1.0.0-rc.32 → 1.0.0rc32),

native form for the Maven pom and npm package.json (1.0.0-rc.32, also valid semver);

• the xberg dependency pin, so an integration always requires the core it ships with:
• pyproject: a floor xberg>=<core> (PEP 440 form). Naming the rc is deliberate —

a bare xberg>=1.0.0 excludes all 1.0.0rcN pre-releases per PEP 440.

• pom: <xberg.version> (native form).
• npm package.json: an exact @xberg-io/xberg pin (native/semver form), matching

the package's own version.

To add a new integration: add its manifest to VERSION_TARGETS (own version) and, if it depends on xberg, XBERG_DEP_MANIFESTS in scripts/sync_integration_versions.py (npm package.json manifests are collected in NPM_MANIFESTS, which feeds both lists). The llama-index dev aggregator (integrations/python/llama-index/pyproject.toml, version 0.0.0, unpublished) is dep-only — not a version target.

Do

• Bump via task version:bump:* / task version:set, then commit the synced manifests

together with the Cargo.toml change (atomic).

• Run task version:check in CI to guarantee integration manifests never drift from core.

Don't

• Don't hand-edit a package/manifest version or an integration's xberg pin — run the sync.
• Don't add integration manifests to alef.toml [workspace.sync] — alef would clobber

their independent-but-derived layout; the dedicated script owns them.