hakorune/tools/selfhost

Hybrid Selfhost Build (80/20)

Purpose

• Provide a minimal, fast path to compile Hako source via Hakorune Stage‑B to Program(JSON v0), and optionally run it via Core‑Direct (in‑proc).
• Future: add MIR emit and ny-llvmc EXE build in small increments.

Script

• tools/selfhost/selfhost_build.sh
  • --in <file.hako>: input Hako source
  • --json <out.json>: write Program(JSON v0); default: /tmp/hako_stageb_$$.json
  • --mir <out.json>: emit MIR(JSON) from source (runner path)
  • --exe : build native executable via ny-llvmc (llvmlite harness)
  • --run: run via Gate‑C/Core Direct (in‑proc). Exit code mirrors program return.
  • Env:
    • NYASH_BIN: path to hakorune/nyash binary (auto-detected)
    • NYASH_ROOT: repo root (auto-detected)
    • HAKO_USE_BUILDBOX=1: use BuildBox for emit-only (no run/exe)

Examples

# Emit JSON only (Stage‑B)
tools/selfhost/selfhost_build.sh --in apps/demo/main.hako --json /tmp/demo.json

# Run and use exit code
tools/selfhost/selfhost_build.sh --in apps/demo/return7.hako --run; echo $?

Notes

• Stage‑B emit uses either the Stage‑B entry or BuildBox（HAKO_USE_BUILDBOX=1 for emit-only）
• Runner executes Core‑Direct in-proc under HAKO_CORE_DIRECT_INPROC=1.
• For heavier cases (bundles/alias/require), keep Stage‑B canaries opt‑in in quick profile.

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Stage1 Selfhost Binary (Phase 25.1 — initial wiring)

Purpose

• Provide a concrete Stage1 binary (hakorune) built from Hako sources.
• Separate the Rust bootstrap binary (Stage0, nyash) from the Hakorune selfhost binary at the build-script level.

Script

• tools/selfhost/build_stage1.sh
  • Builds a Stage1 selfhost executable from a Nyash/Hako entry point.
  • Current entry (default):
    • lang/src/runner/launcher.hako — Stage1 CLI launcher (commands: emit program-json/mir-json, etc.).
  • Output:
    • target/selfhost/hakorune by default.

Usage

# Build Stage1 selfhost binary with defaults
tools/selfhost/build_stage1.sh

# Custom output path
tools/selfhost/build_stage1.sh --out /tmp/hakorune-dev

# Custom entry (experimental)
tools/selfhost/build_stage1.sh --entry apps/selfhost-minimal/main.hako --out /tmp/hako_min

How it works

• Pipeline:
  1. Stage‑B + MirBuilder:
     • tools/hakorune_emit_mir.sh <entry.hako> <mir.json>
  2. LLVM EXE build:
     • tools/ny_mir_builder.sh --in <mir.json> --emit exe -o <exe>
• The Rust binary (Stage0) is resolved via the existing helpers inside hakorune_emit_mir.sh / ny_mir_builder.sh:
  • Prefers target/release/hakorune when present.
  • Falls back to target/release/nyash otherwise.

Notes

• This Stage1 binary is a minimal Ny Executor and not yet a full CLI replacement.
• Full CLI / mode selection for Stage1 will be implemented in later phases; this script focuses on establishing the binary layout and build wiring.