Moss

v0.88.0 Feature

This release adds 3 notable features for engineering teams evaluating rollout.

Published 1mo Editors & IDEs

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✓ No known CVEs patched

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✓ No known CVEs patched in this version

Topics

ai compiler language-server programming-language self-hosted

Summary

AI summary

Updates C VM upgrades, Commands, and order.moss across a mixed release.

Changes in this release

Type	Severity	Summary	CVE
Feature
Feature	Medium	compiler_core.moss now compiles function bodies. compiler_core.moss now compiles function bodies. Source: llm_adapter@2026-06-11 Confidence: high	—
Feature	Medium	All 35 opcodes from compiler_core.moss are now handled by C VM. All 35 opcodes from compiler_core.moss are now handled by C VM. Source: llm_adapter@2026-06-11 Confidence: high	—
Feature	Low	C VM adds OP_AND, OP_OR short‑circuit handling. C VM adds OP_AND, OP_OR short‑circuit handling. Source: llm_adapter@2026-06-11 Confidence: high	—
Feature	Low	C VM adds OP_MOD handler using fmod. C VM adds OP_MOD handler using fmod. Source: llm_adapter@2026-06-11 Confidence: high	—
Feature	Low	New command `moss selfhost-compile file.moss` provides metrics and .mbc output. New command `moss selfhost-compile file.moss` provides metrics and .mbc output. Source: llm_adapter@2026-06-11 Confidence: high	—
Feature	Low	New command `moss artifact --summary file.moss` produces token‑optimized summary. New command `moss artifact --summary file.moss` produces token‑optimized summary. Source: llm_adapter@2026-06-11 Confidence: high	—
Feature	Low	New command `moss selfhost-run file.moss` runs C VM cross‑validation. New command `moss selfhost-run file.moss` runs C VM cross‑validation. Source: llm_adapter@2026-06-11 Confidence: high	—
Feature	Low	Selfhosting no longer requires Python; unzip and double‑click to run. Selfhosting no longer requires Python; unzip and double‑click to run. Source: llm_adapter@2026-06-11 Confidence: high	—

Full changelog

Moss v0.88.0 — Selfhost Compiler

compiler_core.moss now compiles function bodies.

Selfhost compiler metrics (order.moss)

| Unit | Instructions | Source |
|------|-------------|--------|
| Module | 44 | compiler_core.moss |
| fn ship | 27 | compiler_core.moss |
| fn test | 25 | compiler_core.moss |
| Total | 96 | all Moss |

C VM upgrades

OP_AND, OP_OR handlers (boolean short-circuit)
OP_MOD handler (fmod)
All 35 opcodes from compiler_core.moss now handled

Selfhost status

| Component | Status |
|-----------|--------|
| parser | 100% (9/9 zero diff) |
| checker | 5/5 sketches |
| compiler | 96 instructions (module + functions) |
| C VM | 120KB, all opcodes |

Commands

moss selfhost-compile file.moss — metrics + .mbc
moss artifact --summary file.moss — token-optimized
moss selfhost-run file.moss — C VM cross-validation

Download

No Python required. Unzip, double-click, code.

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