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Selfhosting Dev d90216e9c4 📚 Phase 15 - セルフホスティング戦略の明確化とEXE-first実装

## 主な変更点

### 🎯 戦略の転換と明確化
- PyVMを開発ツールとして位置づけ（本番経路ではない）
- EXE-first戦略を明確に優先（build_compiler_exe.sh実装済み）
- Phase順序の整理: 15.2(LLVM)→15.3(コンパイラ)→15.4(VM)

### 🚀 セルフホスティング基盤の実装
- apps/selfhost-compiler/にNyashコンパイラMVP実装
  - compiler.nyash: メインエントリー（位置引数対応）
  - boxes/: parser_box, emitter_box, debug_box分離
- tools/build_compiler_exe.sh: ネイティブEXEビルド＋dist配布
- Python MVPパーサーStage-2完成（local/if/loop/call/method/new）

### 📝 ドキュメント整備
- Phase 15 README/ROADMAP更新（Self-Hosting優先明記）
- docs/guides/exe-first-wsl.md: WSLクイックスタート追加
- docs/private/papers/: 論文G～L、爆速事件簿41事例収録

### 🔧 技術的改善
- JSON v0 Bridge: If/Loop PHI生成実装（ChatGPT協力）
- PyVM/llvmliteパリティ検証スイート追加
- using/namespace機能（gated実装、Phase 15では非解決）

## 次のステップ
1. パーサー無限ループ修正（未実装関数の実装）
2. EXEビルドとセルフホスティング実証
3. c0→c1→c1'ブートストラップループ確立

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

2025-09-15 18:44:49 +09:00

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Phase 15.3 — Imports/Namespace/nyash.toml Plan

Status: 15.3 planning; focus remains on Stage‑1/2 compiler MVP. This document scopes when and how to bring nyash.toml/include/import/namespace into the selfhost path without destabilizing parity.

Goals

Keep runner‑level nyash.toml parsing/resolution as the source of truth during 15.3.
Accept using/import syntax in the Ny compiler as a no‑op (record only) until resolution is delegated.
Avoid VM changes; resolution happens before codegen.

Scope & Sequence (Phase 15.3)

Stage‑1/2 compiler stability (primary)
- Ny→JSON v0 → Bridge → PyVM/llvmlite parity maintained
- PHI merge remains on Bridge (If/Loop)
Imports/Namespace minimal acceptance (15.3‑late)
- Parse using ns / using "path" [as alias] as statements in the Ny compiler
- Do not resolve; emit no JSON entries (or emit metadata) — runner continues to strip/handle
- Gate via NYASH_ENABLE_USING=1
Runner remains in charge
- Keep existing Rust runner’s using stripping + modules registry population
- nyash.toml parsing stays in Rust (Phase 15)

Out of scope (Phase 15)

Porting nyash.toml parsing to Ny
Cross‑module codegen/linking in Ny compiler
Advanced include resolution / package graph

Acceptance (15.3)

Ny compiler can lex/parse using forms without breaking Stage‑1/2 programs
Runner path (Rust) continues to resolve using and nyash.toml as before (parity unchanged)

Looking ahead (MIR18 / Phase 16)

Evaluate moving nyash.toml parsing to Ny as a library box (ConfigBox)
Unify include/import/namespace into a single resolver pass in Ny with a small JSON side channel back to the runner
Keep VM unchanged; all resolution before MIR build

Switches

NYASH_ENABLE_USING=1 — enable using acceptance in Ny compiler (no resolution)
NYASH_SKIP_TOML_ENV=1 — skip applying [env] in nyash.toml (existing)

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Phase 15.3 — Imports/Namespace/nyash.toml Plan

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