mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-11-11 12:33:53 -06:00
Abdessamad Derraz
232f27f5db
An agent reading the events learns that an option refused before the run starts ends on code 2 with no end event.
302 lines
16 KiB
Python
302 lines
16 KiB
Python
"""What the site tells an AI agent about itself.
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- ``llms.txt`` (https://llmstxt.org): the pages and data an agent should
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read first, in Markdown, at the site's root.
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- ``skills/setup-bios/SKILL.md``: an Agent Skill that sets up a device's
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BIOS files with the fewest downloads.
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- ``ard.json``: an Agentic Resource Discovery manifest
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(https://github.com/ards-project/ard-spec) listing that skill and the
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JSON API, linked from every page's head with ``rel="ard"``.
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Both are written from the registry at each build, so a new platform or a
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moved page cannot leave them stale. The WebMCP tools a page registers live
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in website/src/scripts/agent-tools.ts.
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"""
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from __future__ import annotations
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import json
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from collections.abc import Callable
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from pathlib import Path
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from siteguides import PACKAGE_COMMAND
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SITE = "https://abdess.github.io/retrobios/"
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PUBLISHER = "abdess.github.io"
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SH = "curl -fsSL https://abdess.github.io/retrobios/i | sh -s --"
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PS = "& ([scriptblock]::Create((irm https://abdess.github.io/retrobios/i.ps1)))"
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# What a folder put into a command may not hold, as agent-tools.ts refuses
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# it: PowerShell also ends a single-quoted string on the typographic quotes.
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REFUSED = "any quote, straight or typographic (' \" ‘ ’ ‚ ‛ “ ” „), a backtick or a control character"
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QUOTING = (f"A folder goes in single quotes, attached to its option. One that holds {REFUSED}, "
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"or starts with `-`, is a question for the user, never a value to escape into the "
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"command. On a page of the site, the `device_setup_command` WebMCP tool writes the "
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"command and refuses such a folder.")
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UVX = PACKAGE_COMMAND
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# EVENT_SCHEMA of install.py, and the schema generate_event_schema.py writes
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# from EVENT_KEYS, as the site publishes it. tests/test_site_agents.py holds
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# both to install.py.
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EVENT_SCHEMA = 1
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EVENTS_SCHEMA_PATH = "api/v1/schemas/install-events.schema.json"
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# Every code of the Exit status table of wiki/installer.md, in short.
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EXIT_CODES = (
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(0, "everything asked for is installed or already in place"),
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(1, "a failure: a download, a file list or a folder that cannot be used"),
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(2, "nothing was done: an option refused, every file failed, or the user quit"),
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(3, "`--check` found files missing or wrong, nothing having failed"),
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(130, "stopped with Ctrl+C"),
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(141, "the output went to a reader that closed early"),
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)
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START_PAGES = (
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("Which pack is needed", "which-pack/", "pick a device or setup, get the folder its BIOS files go in, "
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"one command that installs and checks them, or a ZIP pack"),
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("First install", "wiki/first-install/", "the steps from nothing to a working BIOS folder"),
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("What are BIOS files", "wiki/what-are-bios-files/", "why emulators need them and where they come from"),
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("Troubleshooting", "wiki/troubleshooting/", "a file the emulator does not find or refuses"),
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("Common questions", "wiki/faq/", "short answers"),
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)
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DATA = (
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("API index", "api/v1/index.json", "every dataset of the JSON API, versioned"),
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("Catalog", "api/v1/catalog.json", "each dataset, manifest, export and download with its size, SHA-256 and schema"),
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("Emulators", "api/v1/emulators.json", "every emulator profile: the files it reads, required or not, "
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"their hashes and the source line that reads each. One document "
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"per emulator at api/v1/emulators/<id>.json"),
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("Core names", "api/v1/cores.json", "each core name and alias, with the profile it designates"),
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("Systems", "api/v1/systems.json", "each system id, its name and the section holding its files"),
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("Platforms", "api/v1/platforms.json", "each setup (RetroArch, Batocera...), its BIOS folder and files"),
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("Hash lookup", "api/v1/lookup/00.json", "what a hash (MD5, SHA-1, SHA-256, CRC32) designates, sharded "
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"by its first two hex characters: api/v1/lookup/<xx>.json"),
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)
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MORE = (
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("Emulators", "emulators/", "one page per emulator"),
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("Systems", "systems/", "one page per console maker, every file with its hashes"),
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("Installer", "wiki/installer/", "every option of install.py"),
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("What is counted", "wiki/privacy/", "the site's cookie-free counting"),
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("Is it legal?", "wiki/legal/", "the project's position"),
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("Contributing", "contributing/", "add a missing file or an emulator profile"),
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)
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def llms_txt(platforms: list[tuple[str, str]]) -> str:
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"""The site's llms.txt. ``platforms`` lists (id, display name) of every
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registered setup, each with its page."""
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lines = [
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"# RetroBIOS",
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"",
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"> BIOS and firmware files for emulators, each checked against the emulator's source "
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"code: which files an emulator reads, whether it starts without them, where each one "
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"goes on every setup, their hashes, and an installer that puts them in place.",
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"",
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"Each emulator's files are read from its code, and most cite the file and line that "
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"read them. The files themselves are served by the GitHub repository "
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"(https://github.com/Abdess/retrobios) and its releases.",
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"",
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"## Answering a user",
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"",
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*(f"- {rule}" for rule in ANSWER_RULES),
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"",
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"## Setting up a device for its user",
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"",
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"Most people want to play now, with the fewest files. The installer does that in one "
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"command: it finds the setup and its BIOS folder, reads the games on the card, and with "
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"`--for-games --required-only` installs only the files those games cannot start "
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"without. `--yes` alone installs what the card's games need, optional files "
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"included, and `--all-files` the setup's whole list (gigabytes).",
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"",
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f"1. Preview, nothing written: `{SH} --for-games --required-only --dry-run`",
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f"2. Install, no questions: `{SH} --for-games --required-only --yes`",
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f"3. On Windows (PowerShell): `{PS} --for-games --required-only --yes`",
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"",
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"- Run it on the device itself (its terminal or SSH), or on a computer with the device's "
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"card plugged in. The installer recognises the handheld systems on the card, among them "
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"ArkOS, dArkOS, ArchR and UnofficialOS (R36S and its clones), muOS, KNULLI, ROCKNIX, "
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"AmberELEC, EmuELEC, Onion, spruceOS and MinUI. "
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"The [Linux handhelds page](" + SITE + "platforms/linux-handhelds/) maps each device "
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"to its system and folder.",
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"- From a computer, if the card is not found, name its BIOS folder: `--dest='<card>/bios'` "
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"(ArkOS and dArkOS: the `bios` folder of the EASYROMS part).",
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"- A games folder somewhere else: `--for-games='<folder>'`, one subfolder per system.",
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f"- {QUOTING}",
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"- Later, to see what is missing or wrong: `--check`. Machine-readable progress: "
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"`--events` (JSON lines, one per event, documented on the installer page).",
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"- A game the installer cannot identify gets every BIOS of its system, and the run names it.",
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f"- The same steps as an Agent Skill: [SKILL.md]({SITE}{SKILL_PATH}).",
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"",
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"## Driving the installer for a user",
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"",
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f"With Python 3.8 or newer, the installer is also a package: `{UVX} --for-games "
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f"--required-only --dry-run`, or `pipx run retrobios` with the same options.",
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"",
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"1. Plan: run it with `--dry-run --events`. Nothing is written, and standard output carries "
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f"one JSON object per line, event schema {EVENT_SCHEMA} "
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f"([JSON Schema]({SITE}{EVENTS_SCHEMA_PATH})): a `file` event per file with its "
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"`state`, `check` with the totals and `bytes_needed`, then `summary` with `pending`.",
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"2. Consent: show the user what will be installed, where, and the size, and ask.",
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"3. Act, only on a yes: the same command with `--yes` in place of `--dry-run`.",
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"",
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"- `--yes` asks nothing: use it in a run without a terminal. A run that needs an "
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"answer (two setups found, none found) stops and names the option to give.",
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"- The exit code, also the `code` of the last `end` event. An option refused at once "
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"writes no event at all:",
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*(f" - `{code}`: {meaning}" for code, meaning in EXIT_CODES),
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"",
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"## Start",
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"",
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*(f"- [{title}]({SITE}{path}): {what}" for title, path, what in START_PAGES),
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"",
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"## Setups",
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"",
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*(f"- [{name}]({SITE}platforms/{pid}/): its BIOS folder and files" for pid, name in platforms),
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"",
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"## Data",
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"",
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*(f"- [{title}]({SITE}{path}): {what}" for title, path, what in DATA),
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"",
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"## Optional",
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"",
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*(f"- [{title}]({SITE}{path}): {what}" for title, path, what in MORE),
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]
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return "\n".join(lines) + "\n"
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# How an assistant answers from the site and not from memory: file names,
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# folders and hashes change with each setup, and a guessed one is the
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# answer that fails. The same rules end the skill.
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ANSWER_RULES = (
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"Each Markdown copy, llms.txt and llms-full.txt name the commit and the date they "
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f"were built from. When a copy read earlier or found through a search engine names a "
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f"commit other than {SITE}version.json, fetch it again: the site changes with each commit.",
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"Answer from the pages and data, not from memory. Every page has a Markdown copy: add "
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"`index.md` to its address (https://abdess.github.io/retrobios/which-pack/index.md). "
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f"[llms-full.txt]({SITE}llms-full.txt) holds the guides and every setup's page in one file.",
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"Name files exactly as the pages write them: names are case-sensitive on most devices, and a renamed file is "
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"not found. Never invent a file name, a folder or a hash.",
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"The BIOS folder depends on the setup, and for RetroArch on the device: give the folder the "
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"setup's page names, under \"Where the files go\".",
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"To check a file the user has, compare its MD5 or SHA-1 with the file's card, or look the hash "
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f"up: {SITE}files/?hash=<value> (the page) or api/v1/lookup/<first two hex>.json (the data).",
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"Prefer the installer to a manual copy: it puts each file in its folder and checks its hash. "
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"Give the command the setup's page gives, with `--for-games --required-only` for the fewest files.",
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"Say where an answer comes from: link the source page.",
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"On a page of the site, the WebMCP tools answer from the data: setup_bios_files (folder and "
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"files of a setup), emulator_bios_files, lookup_bios_hash, device_setup_command, search_retrobios.",
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f"Whether sharing BIOS files is legal depends on the country: point to [Is it legal?]({SITE}wiki/legal/), "
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"do not give legal advice.",
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)
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SKILL_PATH = "skills/setup-bios/SKILL.md"
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# The Agent Skills media type ARD names: Markdown with this profile.
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SKILL_TYPE = 'text/markdown; profile="urn:air:agent-skills"'
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def skill_md() -> str:
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"""An Agent Skill (SKILL.md: YAML front matter, then instructions) that
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sets up a device's BIOS files with the fewest downloads."""
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return "\n".join([
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"---",
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"name: setup-bios",
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"description: Install the BIOS and firmware files a retrogaming device or computer needs "
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"(RetroArch, Batocera, EmuDeck, ArkOS, dArkOS, muOS, KNULLI, ROCKNIX and others), only "
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"what the games on its card need to start. Use when a user asks to set up emulators, "
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"a handheld (R36S, Miyoo, Anbernic), BIOS files or firmware.",
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"---",
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"",
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"# Set up BIOS files with RetroBIOS",
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"",
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"Most users want to play now, with the fewest files. Install only what the games on the "
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"card need, unless the user asks for everything.",
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"",
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"## Steps",
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"",
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"1. Ask where the games are: on the device itself (with its terminal or SSH), or on "
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"its card plugged into this computer.",
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f"2. Preview, nothing is written: `{SH} --for-games --required-only --dry-run` "
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f"(Windows PowerShell: `{PS} --for-games --required-only --dry-run`).",
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"3. Show the user the plan it prints: the setup found, the BIOS folder, the files and "
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"their size. Ask before going on if the setup or the folder is not the one expected.",
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"4. Install with the same command, `--yes` in place of `--dry-run`.",
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"5. Report the summary line. A game the installer could not identify got every BIOS of "
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"its system: say which.",
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"",
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"## When the setup or the card is not found",
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"",
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"- From a computer, name the card's BIOS folder: `--dest='<card>/bios'`. ArkOS and dArkOS "
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"keep it on the EASYROMS part.",
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"- Games outside the card: `--for-games='<folder>'`, one subfolder per system.",
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"- A setup not detected: `--platform=<name>`, a name exactly as `--list-platforms` prints "
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"it (letters, digits, `-` and `_`).",
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f"- {QUOTING}",
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"",
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"## Later",
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"",
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"- `--check` says what is missing or wrong, without downloading.",
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"- `--events` writes the run as JSON lines, for reading by a program.",
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"",
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"## Answering from the site",
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"",
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*(f"- {rule}" for rule in ANSWER_RULES),
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"",
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f"Every option: {SITE}wiki/installer/. Devices and their folders: "
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f"{SITE}platforms/linux-handhelds/. The site's guide for agents: {SITE}llms.txt.",
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"",
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])
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def ard_manifest() -> dict:
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"""The ARD manifest: the setup skill and the JSON API, each with the
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questions it answers. llms.txt is found at the site root, as its
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convention says."""
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return {
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"entries": [
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{
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"identifier": f"urn:air:{PUBLISHER}:retrobios:setup-bios",
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"displayName": "Set up BIOS files with RetroBIOS",
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"type": SKILL_TYPE,
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"url": f"{SITE}{SKILL_PATH}",
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"description": "An agent skill that installs the BIOS files a device needs, only "
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"what the games on its card need to start.",
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"representativeQueries": [
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"install the minimum BIOS files for the games on an R36S running dArkOS",
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"set up BIOS files for RetroArch on a Steam Deck",
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"the emulator says BIOS missing, fix it",
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],
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"capabilities": ["SetupBios"],
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"tags": ["bios", "firmware", "emulation", "retrogaming"],
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},
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{
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"identifier": f"urn:air:{PUBLISHER}:retrobios:api",
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"displayName": "RetroBIOS JSON API",
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"type": "application/json",
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"url": f"{SITE}api/v1/index.json",
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"description": "Versioned JSON datasets: emulator profiles, platforms, systems, core "
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"names and a hash lookup.",
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"representativeQueries": [
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"what file has the MD5 490f666e1afb15b7362b406ed1cea246",
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"which files does the beetle_psx core read",
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"where do PlayStation BIOS files go on Batocera",
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],
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"capabilities": ["HashLookup", "EmulatorFiles", "PlatformFiles"],
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"tags": ["api", "json", "bios"],
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},
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]
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}
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# IndexNow: the key search engines read back from the site before they take
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# a list of changed pages from it (scripts/indexnow.py). Public by design.
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INDEXNOW_KEY = "23329654933fb67280e8e7ac749eb869"
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INDEXNOW_FILE = "indexnow.txt"
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def write(public: Path, platforms: list[tuple[str, str]],
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write_if_changed: Callable[[str, str], object]) -> None:
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write_if_changed(str(public / "llms.txt"), llms_txt(platforms))
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write_if_changed(str(public / INDEXNOW_FILE), INDEXNOW_KEY + "\n")
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(public / SKILL_PATH).parent.mkdir(parents=True, exist_ok=True)
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write_if_changed(str(public / SKILL_PATH), skill_md())
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write_if_changed(str(public / "ard.json"), json.dumps(ard_manifest(), indent=1) + "\n")
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