v2026.3.23 — janus fmt Ships

v2026.3.23 — janus fmt Ships

Released: March 21, 2026

A language that takes itself seriously has a formatter. Now Janus does.

janus fmt

1,887 lines. 34 tests. Zero configuration.

janus fmt src/main.jan           # Format in-place
janus fmt --check src/main.jan   # CI: exit 1 if not formatted, show diff

The formatter enforces SPEC-017 Law 2 (the structural divide), normalizes spacing around operators, indents bodies at 4 spaces, preserves all comments, and inserts blank lines between top-level declarations.

Every test verifies idempotency: format(format(x)) == format(x). Always. Dogfooded on 1,056-line hinge_cli.jan — formats and compiles.

--check mode shows a line-by-line diff so CI logs tell you what changed, not just that something failed.

Full documentation

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janus build Reads Lockfile

janus build now reads janus.lock when present. For each dependency in the lockfile, it finds the source in .hinge/registry/<name>/<version>/src/, compiles it to an object file, and links it into the final binary.

Deduplication: dependencies already compiled via use zig are detected by basename and skipped. No double-linking.

Verified end-to-end: library publishes with source, consumer resolves + locks + builds, binary calls functions from the dependency. It works.

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:service Profile — Fully Green

The nested using type mismatch (i64 passed to ptr parameter of janus_using_close) was confirmed fixed. Verified with 3-level nesting: db -> tx -> cursor with correct LIFO cleanup order.

All :service profile tests pass: channels, select, nursery, spawn, using, async/await.

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Hinge Integration

• Deduplicated SemVer, manifest, and resolver into canonical lib/ modules
• add command writes proper KDL dependencies { } blocks (was appending comments)
• Lockfile includes transitive dependencies with CID schema
• publish copies source files to local registry
• Full local loop: init -> add -> resolve -> lock -> publish -> search -> consume

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println Compiler Fix

The LLVM emitter now correctly detects string sources from variables. User-defined functions that return string pointers are treated as strings by println (not printed as raw pointer addresses). The fix removes a function_return_types check that misclassified all :core functions as integer-returning.

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Numbers

• 4 commits in this release
• 1,887 lines of formatter code
• 34 formatter tests (idempotency-verified)
• ~140 lines of lockfile consumption in the build pipeline
• 5 :service profile test targets all green