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XO 0.1.0 — one state graph, every boundary

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@fire17 fire17 released this 30 Aug 08:58
· 14 commits to main since this release
v0.1.0
4ce7ec0

XO 0.1.0 — one state graph, every boundary

XO's first unified release preserves the interaction that made the original experiments exceptional—one path can hold a value and children—while rebuilding every surrounding capability on one bounded contract.

What ships

  • Dependency-free Python state graph with fluent paths, immutable events, transactions, snapshots, and subscriptions.
  • Lazy formulas with dynamic read dependencies, cache invalidation, cycle detection, and single-flight evaluation.
  • Deterministic capability fusion for validation, history, services, strict durability, and projections.
  • Direct RESP Redis durability and replication with compare-and-swap and explicit ambiguous-outcome recovery.
  • Allow-listed local RPC with deadlines, cancellation, bounded frames, and credit-controlled streams.
  • Scoped WebSocket synchronization plus a dependency-free JavaScript Proxy peer.
  • Compatibility facades for observed historical XO constructors, with unsafe prototype behaviors rejected explicitly.
  • xo inspect, xo doctor, xo benchmark, and xo serve CLI commands.

Verification

  • Python: 84 contracts collected; 83 passed and one disposable-Redis test skipped without XO_TEST_REDIS_URL.
  • Real Redis: dedicated loopback integration scenario passed.
  • JavaScript: 4 tests, 19 assertions, zero failures.
  • Runtime matrix: clean package install and end-to-end scenario on Python 3.11, 3.12, 3.13, and 3.14.
  • Build: Python wheel/source distribution and JavaScript package dry-pack passed.
  • Performance on Apple M3 Max / Python 3.12.3: 0.325 µs existing read, 1.627 µs scalar set, 1.592 µs cached formula read (100,000 operations × 15 rounds, median).

Lineage

The original 2021 implementation is preserved on the legacy-2021 branch. Version 0.1.0 is a clean semantic refoundation rather than a bug-for-bug port. See origins.md, PRODUCT.md, and ARCHITECTURE.md for the recovered intent, product boundary, and exact contracts.

Package channels

The release contains installable Python artifacts. PyPI and JavaScript registry publication workflows are prepared for trusted publishing; those channels become live after their respective registry environments are authorized.

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