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hakorune/docs/archive/roadmap/phases/phase-15/imports-namespace-plan.md
nyash-codex 811dfebf98 fix(joinir): Phase 241-EX - Remove hardcoded 'sum' check from Pattern3 
Remove legacy hardcoded 'sum' carrier validation that was blocking
array_filter patterns with different accumulator names (e.g., 'out').

Before: Pattern3 required carrier named 'sum' to exist
After: Pattern3 uses carrier_info generically (any carrier name works)

Test results:
- phase49_joinir_array_filter_smoke: PASS ✅
- phase49_joinir_array_filter_fallback: PASS ✅
- phase49_joinir_array_filter_ab_comparison: PASS ✅
- Full suite: 909/909 PASS, 0 FAIL

Also: Archive old roadmap documentation (67k lines moved to docs/archive/)

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2025-12-11 00:48:42 +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)

  1. Stage‑1/2 compiler stability (primary)
    • Ny→JSON v0 → Bridge → PyVM/llvmlite parity maintained
    • PHI merge remains on Bridge (If/Loop)
  2. 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
  3. 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)