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.