Pokémon ROM Hacks — tooling

Acquisition + patching pipeline for the Pokémon ROM-hack collection in the valhalla homelab library. Spun off from the homelabstack repo on 2026-06-06.

The catalog (the notes) lives in the self-hosted Obsidian vault, not in this repo — under Pokémon ROM Hacks/: one note per hack, plus Index, Types, Play Queue, Bases/, Platforms/, a Wanted acquisition list, and a _Claude.md ops reference. Access it via the Obsidian MCP (mcp__obsidian__*) or the vault skill. New hacks are added there manually (see the vault's _Claude.md checklist). This repo is just the tooling.

The ROMs live on valhalla under /storage1/Emulation/roms/<platform>/, served by the RomM stack (roms.ginnoir.com) — deployed from homelabstack (stacks/roms/).

Layout

Path	What
scripts/romhack-import.py	Import a drop folder of mixed ROMs/patches/docs into the valhalla library (validate, clean-name, apply patches, archive). Runs on valhalla.
scripts/romhack-fetch.py	Acquire + patch + place worthwhile hacks from direct (non-gated) sources. Manifest-driven. Runs on valhalla.
scripts/romhack-apply.py	Apply a single IPS/BPS/UPS patch to a base ROM with checksum verification.
scripts/romhack-pc-migrate.py	Place the PC/Windows fan-games (RPG-Maker/Essentials) from the scrape staging tree into RomM's windows platform so RomM catalogs + serves them like the console hacks. Dry-run default; --apply copies, repackaging .rar→.zip. Runs on valhalla.
scripts/launch-pc-hack.ps1	Playnite custom-emulator launcher for the PC hacks: finds Game.exe in the RomM-downloaded folder, sets CWD, runs it. Runs on the Windows client.
scripts/setup-playnite-pc-hack.ps1	One-shot Playnite setup: registers the custom emulator + RomM pc_windows mapping (AutoExtract, download dir). Playnite must be closed.
scripts/build-vault-mocs.py	Regenerate the vault's static MOC tables + header counts (Index/Platforms/Bases) from the notes. Read-only on Hacks/*.md. Re-run after any note change.
scripts/scrape_match.py	Match the Discord-scrape metadata.json entries to vault notes → .scrape/_match_report.json (curated-overlap / discord-match / unmatched).
scripts/enrich_vault.py	Synthesize the scrape into notes: backfill (frontmatter for imports), merge (scrape into curated), create (new notes), rebuild (normalize import bodies). --apply writes; default dry-runs to .scrape/_preview/.
scripts/enrich_web.py	Apply hand/web-researched facts from .scrape/web_facts*.json onto notes (summary, features, dev, version, notability), idempotently.
scripts/build-wiki-data.py	Export all notes → wiki/catalog.json, the data source for the wiki site (see wiki/SPEC.md).
scripts/build-romhack-vault.py	Archived. Original 75-hack bootstrap generator — do not re-run against the live vault. Kept only for its structured HACKS dataset.
wiki/	catalog.json (exported 368-hack dataset) + SPEC.md (build spec for the future static wiki site).
drop/	gitignored staging area (~1.3 GB) of ROM/patch binaries pending import.
.scrape/	gitignored per-machine scratch: Discord-scrape metadata.json pulled from valhalla + match report + web_facts*.json + note backups.

Enrichment pipeline

The vault catalog (368 notes) was enriched from the Discord scrape on valhalla (/storage1/labdata/romhacks/metadata/*/metadata.json) plus web research. To re-run or extend:

# 1. pull the scrape metadata locally (one-time / refresh)
ssh valhalla "cd /storage1/labdata/romhacks/metadata && tar cf - */metadata.json" | tar xf - -C .scrape

# 2. match scrape -> notes
python scripts/scrape_match.py --report .scrape/_match_report.json

# 3. synthesize (drop --apply first to preview into .scrape/_preview/)
python scripts/enrich_vault.py backfill --apply
python scripts/enrich_vault.py rebuild  --apply
python scripts/enrich_vault.py merge    --apply
python scripts/enrich_vault.py create   --apply

# 4. web-enrich more hacks: add a .scrape/web_factsN.json batch, then
python scripts/enrich_web.py --apply

# 5. refresh static surfaces + the site data
python scripts/build-vault-mocs.py
python scripts/build-wiki-data.py

Art for every scraped hack is web-served at https://romhacks-files.ginnoir.com/_meta/<scrape_dir>/<file> (copied into the Caddy-served library/_meta/ tree on valhalla).

PC / Windows hacks

The 40 platform: PC catalog entries are RPG-Maker XP / Pokémon Essentials fan-games (Game.exe + Data/*.rxdata), not emulatable ROMs. 32 have files in the scrape staging tree (/storage1/labdata/romhacks/library/<dir>/); the other 8 are gated (Reborn, Rejuvenation, Infinite Fusion, …) and live catalog-only on the vault Wanted list.

They are served through the same RomM stack as the console hacks, under the windows platform (RomM's "Microsoft Windows"; note pc is excluded in RomM's config.yml, windows is not). Each hack is a single archive in the platform root — Pokemon - <Hack> [Hack].zip — NOT in a subfolder (a subfolder would make RomM treat the whole thing as one multi-file game).

# place the PC hacks into roms/windows/ (dry-run first)
python3 scripts/romhack-pc-migrate.py --catalog wiki/catalog.json
python3 scripts/romhack-pc-migrate.py --catalog wiki/catalog.json --apply
# then scan just that platform in RomM, or via API

• Windows play: RomM Playnite plugin downloads + extracts the zip, then launches via scripts/launch-pc-hack.ps1 registered as a Custom emulator.
• Steam Deck: no automated path — RetroDECK has no Windows runtime. mkxp-z ports (ship mkxp.json) run natively on Linux; the rest need manual Proton.
• Save sync: RomM's save sync is emulator-only (won't cover these). Use Ludusavi + Syncthing; Essentials saves land in ~/Saved Games/<Game.ini Title>/.

Acquisition policy

Pre-3DS handhelds (gb/gbc/gba/nds) + pre-Wii consoles. Direct, non-anti-bot sources only for auto-fetch; gated hacks are tracked in the vault's Pokémon ROM Hacks/Wanted.md for manual hand-off. No offensive/"shitpost" content (e.g. Clover excluded).