Files
libretro/scripts/generate_games_index.py
T
Abdessamad Derraz dd904e2fab fix: say what differs in games index --check
--check printed only STALE and a path, after the whole coverage table. It now skips the table, names what changed in each document (an added file, a changed key) and the command that writes them. The published index lagged the RetroArch manifest by ep128emu/roms/ide12.rom and is regenerated.
2026-11-05 19:17:23 +01:00

698 lines
29 KiB
Python

"""Publish what the installer reads to install for the games on a card.
The installer's "For the games on this card" mode reads the card's rom
folders, identifies each game and installs only the BIOS those games need.
This step joins the sources that answer each part and writes them next to the
install lists, under install/games/:
- index.json: format version, a digest of the data, and every published
file with its size, its gzip size (raw.githubusercontent.com compresses on
request) and its sha256, so a phone fetches only what its card needs.
- setups/<setup>.json: the setup's rom folders (platforms/romfolders/),
resolved to repository systems and profiles, with the key of each folder's
fallback set.
- fallback/<platform>.json: per system and default core, the files the
platform's install list carries for them (computed from install/<platform>.json
with the installer's own core narrowing), their sizes and whether each is
required. What an unrecognised game keeps.
- systems/<system>.json: identification (games/catalogs/, crc32 + size to a
region and a title, disc serials to a region), header readers
(games/headers.yml), region rules per profile (games/regions.yml joined with
the profiles' region: fields) and per-game extra files (games/extras.yml).
- arcade/<profile>.json: game set to BIOS parent and device sets
(games/arcade/).
Nothing here is written by hand: a second run writes the same bytes.
python scripts/generate_games_index.py
python scripts/generate_games_index.py --check # exit 1 if a file would change
"""
from __future__ import annotations
import argparse
import gzip
import hashlib
import json
import posixpath
import sys
from collections.abc import Iterable
from dataclasses import dataclass
from pathlib import Path
ROOT = Path(__file__).resolve().parent.parent
if str(ROOT) not in sys.path:
sys.path.insert(0, str(ROOT))
from common import ( # noqa: E402
list_registered_platforms,
load_emulator_profiles,
load_platform_config,
native_layer,
run_cli,
)
from region import normalize_declared # noqa: E402
from romfolders import ( # noqa: E402
ProfileResolver,
Resolution,
SystemResolver,
folder_names,
load_setups,
)
from artifacts import write_text_atomic # noqa: E402
from safeparse import yaml_load # noqa: E402
import install # noqa: E402
FORMAT_VERSION = 1
OUTPUT = Path("install") / "games"
GAMES = Path("games")
# Coverage the published data may not fall below. A rescrape or a DAT import
# that loses rows fails the step instead of shipping a thinner index.
FLOORS = {
"folders_resolved_share": 0.84,
"catalog_systems": 30,
"arcade_profiles": 6,
}
@dataclass(frozen=True)
class Inputs:
"""Where each source is read from. The defaults are the repository's."""
games: Path = GAMES
romfolders: Path = Path("platforms") / "romfolders"
install: Path = Path("install")
emulators: str = "emulators"
platforms: str = "platforms"
def dumps(document: object) -> str:
return json.dumps(document, sort_keys=True, separators=(",", ":"), ensure_ascii=False) + "\n"
def _load_yaml(path: Path) -> dict:
if not path.exists():
return {}
with path.open(encoding="utf-8") as handle:
return yaml_load(handle) or {}
def _load_json(path: Path) -> dict:
with path.open(encoding="utf-8") as handle:
return json.load(handle)
# --- Profiles ---------------------------------------------------------------
def _entry_systems(profile: dict, entry: dict) -> set[str]:
"""The systems a profile file serves: its own system field, else the profile's."""
own = entry.get("system") or entry.get("systems")
if own:
return {own} if isinstance(own, str) else {str(s) for s in own}
return {str(s) for s in profile.get("systems") or []}
def _entry_names(entry: dict) -> set[str]:
names = {str(entry.get("name") or "")}
names |= {str(a) for a in entry.get("aliases") or []}
for key in ("path", "standalone_path", "destination"):
if entry.get(key):
names.add(Path(str(entry[key])).name)
return {n.lower() for n in names if n}
class Profiles:
"""Profile lookups the fallback and region sections share."""
def __init__(self, profiles: dict[str, dict], resolver: SystemResolver) -> None:
self.profiles = profiles
self.resolver = resolver
self._by_name: dict[str, dict[str, list[dict]]] = {}
def entries_named(self, profile: str, name: str) -> list[dict]:
table = self._by_name.get(profile)
if table is None:
table = {}
for entry in self.profiles.get(profile, {}).get("files") or []:
if isinstance(entry, dict):
for n in _entry_names(entry):
table.setdefault(n, []).append(entry)
self._by_name[profile] = table
return table.get(name.lower(), [])
def serves(self, profile: str, entry: dict, system: str) -> bool:
wanted = self.resolver.equivalents(system)
return bool(_entry_systems(self.profiles.get(profile, {}), entry) & wanted)
def region_files(self, profile: str, system: str) -> dict[str, list[str]]:
"""Region slug -> file names the profile tags for it, for one system.
`any` holds the files declared with no region: those are installed
whatever the game's region.
"""
out: dict[str, set[str]] = {}
data = self.profiles.get(profile, {})
for entry in data.get("files") or []:
if not isinstance(entry, dict) or not self.serves(profile, entry, system):
continue
if entry.get("category") == "game_data":
continue
regions = normalize_declared(entry.get("region")) or {"any"}
for region in regions:
out.setdefault(region, set()).add(str(entry["name"]))
return {k: sorted(v) for k, v in sorted(out.items())}
# --- Fallback sets ----------------------------------------------------------
def _platform_required(platform: str, platforms_dir: str) -> dict[tuple[str, str], bool]:
"""(system, file name) -> required, as the platform's own list declares it."""
config = load_platform_config(platform, platforms_dir)
out: dict[tuple[str, str], bool] = {}
for sys_id, system in (native_layer(config) or config).get("systems", {}).items():
for entry in system.get("files", []):
for name in {entry.get("name"), Path(str(entry.get("destination") or "")).name} - {None, ""}:
out[(sys_id, str(name).lower())] = entry.get("required") is not False
return out
def _narrowed(manifest: dict, cores: list[str], cache: dict) -> list[tuple[dict, str]]:
"""The install list under some cores, each file with its lowercased
base name. The answer depends on the cores alone, and a platform asks
it once per system they run."""
key = (id(manifest), tuple(cores))
if key not in cache:
files, _omitted = install.narrow(
manifest["files"], manifest.get("omitted_files", []), [], cores, [])
cache[key] = [(entry, posixpath.basename(entry["dest"]).lower()) for entry in files]
return cache[key]
def fallback_set(
manifest: dict,
platform_required: dict[tuple[str, str], bool],
profiles: Profiles,
system: str,
profile: str | None,
narrowed: dict | None = None,
) -> dict:
"""The files an unrecognised game of one system keeps on one platform.
The platform's own files for the system, plus what the default core's
profile reads for it. The core step is the installer's own narrowing
(`install.narrow` with the designated cores). A core file the list does
not attribute to a platform system is kept when the profile entry that
declares it serves the system.
"""
wanted = profiles.resolver.equivalents(system)
cores = sorted(install.designated_cores(manifest, [profile])) if profile else []
rows: list[list] = []
for entry, base in _narrowed(manifest, cores, {} if narrowed is None else narrowed):
systems = set(entry.get("systems") or [])
dest = entry["dest"]
if entry.get("cores") is None:
if not systems & wanted:
continue
required = any(
platform_required.get((s, base), True) for s in systems & wanted
)
else:
if systems:
if not systems & wanted:
continue
declared = profiles.entries_named(profile or "", base)
if not systems and not any(profiles.serves(profile or "", e, system) for e in declared):
continue
required = any(e.get("required") is not False for e in declared) if declared else True
rows.append([dest, int(entry["size"]), required, entry.get("category") or "bios"])
rows.sort()
return {
"files": rows,
"bytes": sum(r[1] for r in rows),
"required_bytes": sum(r[1] for r in rows if r[2]),
}
def _shared_table(platform: str, sets: dict[str, dict]) -> dict:
"""One row per install-list file, and each set as indices into it.
The sets of the MAME-run systems hold the same thousand files: written
out per set, Batocera's table weighed half a megabyte compressed.
"""
rows = sorted({(r[0], r[1], r[3]) for body in sets.values() for r in body["files"]})
position = {row: i for i, row in enumerate(rows)}
published = {}
for key, body in sorted(sets.items()):
published[key] = {
"files": [position[(r[0], r[1], r[3])] for r in body["files"]],
"optional": [position[(r[0], r[1], r[3])] for r in body["files"] if not r[2]],
"bytes": body["bytes"],
"required_bytes": body["required_bytes"],
}
return {
"format_version": FORMAT_VERSION,
"platform": platform,
"files": [list(r) for r in rows],
"sets": published,
}
# --- Setups -----------------------------------------------------------------
def _arcade_profiles(directory: Path) -> set[str]:
return {p.stem for p in directory.glob("*.json")} if directory.is_dir() else set()
def resolve_folder(
row: dict, platform: str, profile: str | None, resolver: SystemResolver, profiles: Profiles,
arcade: frozenset[str] | set[str] = frozenset(),
) -> Resolution:
"""The systems a folder holds: its names first, else its core's machines.
A name nothing spells, run by a core of one machine, is that machine
(ECWolf's wolf3d folder, a port's own folder). Run by a core of several,
its games are one of them (theodore's thomson folder), and every one
is kept: left empty, the folder had no fallback and its games got no file.
An arcade core is the exception: the arcade index names each set's
files, and its hundred machines would make any unknown file a fallback
for all of them.
"""
resolution = resolver.resolve(folder_names(row), platform)
own = [str(s) for s in profiles.profiles.get(profile or "", {}).get("systems") or []]
if resolution.systems or not own:
return resolution
if len(own) == 1:
return Resolution([resolver.canonical(own[0])], f"only system of {profile}")
if profile in arcade:
return resolution
return Resolution(sorted({resolver.canonical(s) for s in own}), f"systems of {profile}")
def build_setups(
setups: dict[str, dict],
resolver: SystemResolver,
cores: ProfileResolver,
profiles: Profiles,
arcade: set[str],
inputs: Inputs,
) -> tuple[dict[str, dict], dict[str, dict], dict]:
"""Published setup documents, fallback tables per platform, coverage."""
manifests: dict[str, dict] = {}
required: dict[str, dict] = {}
fallbacks: dict[str, dict[str, dict]] = {}
narrowed: dict = {}
out: dict[str, dict] = {}
coverage: dict[str, dict] = {}
for setup, doc in sorted(setups.items()):
platform = doc.get("platform") or ""
if platform and platform not in manifests:
path = inputs.install / f"{platform}.json"
if path.exists():
manifests[platform] = _load_json(path)
required[platform] = _platform_required(platform, inputs.platforms)
manifest = manifests.get(platform)
folders: list[dict] = []
counts = {"folders": 0, "resolved": 0, "profile": 0, "fallback": 0}
for row in doc.get("folders", []):
counts["folders"] += 1
profile = cores.resolve(row.get("core"))
resolution = resolve_folder(row, platform, profile, resolver, profiles, arcade)
published: dict = {
"folder": row["folder"],
"systems": resolution.systems,
"basis": resolution.basis,
}
for key in ("name", "aliases", "extensions", "files", "core", "emulator", "note"):
if row.get(key):
published[key] = row[key]
if profile:
published["profile"] = profile
counts["profile"] += 1
if resolution.systems:
counts["resolved"] += 1
def fallback_keys(chosen: str | None) -> list[str]:
"""The fallback sets of the folder's systems under one core,
computed once per platform."""
keys = []
table = fallbacks.setdefault(platform, {})
for system in resolution.systems:
key = f"{system}|{chosen or ''}"
if key not in table:
table[key] = fallback_set(manifest, required[platform], profiles, system,
chosen, narrowed)
keys.append(key)
return keys
sets_known = manifest is not None and bool(resolution.systems)
boards = {}
for board, spec in sorted((row.get("board_defaults") or {}).items()):
boards[board] = {"core": spec["core"]}
board_profile = cores.resolve(spec["core"])
if board_profile:
boards[board]["profile"] = board_profile
if board_profile in arcade:
boards[board]["arcade"] = board_profile
if sets_known:
# A card moves between boards, and the installer reads
# it on a computer: each board's core has its set.
boards[board]["fallback"] = fallback_keys(board_profile)
if boards:
published["board_defaults"] = boards
if profile and profile in arcade:
published["arcade"] = profile
elif row.get("arcade"):
published["arcade"] = True
if sets_known:
keys = fallback_keys(profile)
published["fallback"] = keys
if any(fallbacks[platform][k]["files"] for k in keys):
counts["fallback"] += 1
published["source_ref"] = row["source_ref"]
folders.append(published)
out[setup] = {
"format_version": FORMAT_VERSION,
"setup": setup,
"name": doc["name"],
"platform": platform,
"sources": doc["sources"],
"roms_root": doc["roms_root"],
"case_sensitive": doc["case_sensitive"],
**{k: doc[k] for k in ("skip", "hidden", "media", "notes") if doc.get(k)},
"folders": folders,
}
coverage[setup] = counts
published_fallbacks = {
platform: _shared_table(platform, table) for platform, table in sorted(fallbacks.items())
}
return out, published_fallbacks, coverage
# --- Systems ----------------------------------------------------------------
def _catalogs(directory: Path) -> Iterable[dict]:
if directory.is_dir():
for path in sorted(directory.glob("*/*.json")):
yield _load_json(path)
def build_systems(
resolver: SystemResolver,
profiles: Profiles,
used: dict[str, set[str]],
games: Path,
) -> tuple[dict[str, dict], dict]:
"""Published system documents and per-system coverage.
`used` holds, per system, the profiles some setup starts for it: their
region files are published even without a rule of their own.
"""
headers = _load_yaml(games / "headers.yml").get("systems", {})
extras: dict[str, list[dict]] = {}
for entry in _load_yaml(games / "extras.yml").get("extras", []):
extras.setdefault(entry["system"], []).append(entry)
rule_file = _load_yaml(games / "regions.yml")
cases = rule_file.get("cases", {})
docs: dict[str, dict] = {}
def doc_for(system: str) -> dict:
key = resolver.canonical(system)
return docs.setdefault(key, {"format_version": FORMAT_VERSION, "system": key})
for catalog in _catalogs(games / "catalogs"):
doc = doc_for(catalog["system"])
regions_table = catalog["regions"]
fields = catalog["fields"]
col = {name: i for i, name in enumerate(fields)}
ident = doc.setdefault("identify", {"sources": [], "regions": [], "games": [], "serials": {}})
region_index: dict[tuple[str, ...], int] = {
tuple(r): i for i, r in enumerate(ident["regions"])
}
def reindex(i: int) -> int:
value = tuple(regions_table[i]) if i is not None and i >= 0 else ()
if value not in region_index:
region_index[value] = len(ident["regions"])
ident["regions"].append(list(value))
return region_index[value]
ident["sources"].append({
k: catalog[k] for k in ("source", "dat", "version", "fetched_from", "licence", "serial_note") if k in catalog
})
for row in catalog["games"]:
region = reindex(row[col["region"]])
ident["games"].append([row[col["crc32"]], row[col["size"]], region, row[col["title"]]])
for serial in row[col["serials"]] if "serials" in col else []:
ident["serials"].setdefault(serial, set()).add(region)
for doc in docs.values():
ident = doc.get("identify")
if ident:
ident["games"].sort()
ident["serials"] = {s: sorted(r) for s, r in sorted(ident["serials"].items())}
for system, spec in headers.items():
doc_for(system)["headers"] = spec
for system, entries in extras.items():
doc_for(system).setdefault("extras", []).extend(entries)
rule_profiles: dict[str, set[str]] = {}
for system, spec in rule_file.get("systems", {}).items():
doc = doc_for(system)
rules = doc.setdefault("region_rules", {})
rules.update(spec)
named = {
case["case"] for core in spec.values()
for case in (core.get("keep_all_regions") or []) if isinstance(case, dict)
}
if named:
doc.setdefault("cases", {}).update({c: cases[c] for c in sorted(named) if c in cases})
rule_profiles.setdefault(doc["system"], set()).update(spec if isinstance(spec, dict) else ())
for system, names in used.items():
rule_profiles.setdefault(resolver.canonical(system), set()).update(names)
for system, names in rule_profiles.items():
files = {
name: tagged for name in sorted(names)
if name in profiles.profiles
and (tagged := profiles.region_files(name, system))
and set(tagged) - {"any"}
}
if files:
doc_for(system)["region_files"] = files
coverage = {
system: {
"games": len(doc.get("identify", {}).get("games", [])),
"serials": len(doc.get("identify", {}).get("serials", {})),
"header_readers": len((doc.get("headers") or {}).get("readers", {}) or []),
"region_profiles": len(doc.get("region_files", {})),
"extras": bool(doc.get("extras")),
}
for system, doc in sorted(docs.items())
}
return docs, coverage
# --- Arcade -----------------------------------------------------------------
def build_arcade(directory: Path) -> dict[str, dict]:
if not directory.is_dir():
return {}
return {path.stem: _load_json(path) for path in sorted(directory.glob("*.json"))}
# --- Writing ----------------------------------------------------------------
def _entry(text: str) -> dict:
data = text.encode("utf-8")
return {
"size": len(data),
"gzip_size": len(gzip.compress(data, compresslevel=9, mtime=0)),
"sha256": hashlib.sha256(data).hexdigest(),
}
def folder_systems(setups: dict[str, dict]) -> dict[str, list[str]]:
"""Every folder name a setup gives a system, casefolded, with the systems
any setup reads there, and each system id under its own name.
What a games folder on a computer is read with when its setup names no
folder of its own (RetroArch): a name two setups give two systems keeps
both.
"""
names: dict[str, set[str]] = {}
for doc in setups.values():
for row in doc["folders"]:
systems = row["systems"]
if not systems:
continue
for name in [row["folder"], *(row.get("aliases") or [])]:
names.setdefault(str(name).casefold(), set()).update(systems)
for system in systems:
names.setdefault(system.casefold(), set()).add(system)
return {name: sorted(systems) for name, systems in sorted(names.items())}
def render(output: Path = OUTPUT, inputs: Inputs = Inputs()) -> tuple[dict[Path, str], dict]:
"""Every published file's text, keyed by its path, and the coverage."""
resolver = SystemResolver.from_repo(inputs.emulators, inputs.platforms)
profiles = Profiles(load_emulator_profiles(inputs.emulators), resolver)
arcade = build_arcade(inputs.games / "arcade")
setups, fallbacks, setup_cov = build_setups(
load_setups(inputs.romfolders), resolver, ProfileResolver.from_repo(inputs.emulators),
profiles, set(arcade), inputs,
)
used: dict[str, set[str]] = {}
for doc in setups.values():
for row in doc["folders"]:
for system in row["systems"]:
if row.get("profile"):
used.setdefault(system, set()).add(row["profile"])
systems, system_cov = build_systems(resolver, profiles, used, inputs.games)
files: dict[Path, str] = {}
index: dict = {"format_version": FORMAT_VERSION, "setups": {}, "fallback": {}, "systems": {}, "arcade": {}}
for kind, docs in (("setups", setups), ("fallback", fallbacks), ("systems", systems), ("arcade", arcade)):
for key, doc in sorted(docs.items()):
rel = Path(kind) / f"{key}.json"
text = dumps(doc)
files[output / rel] = text
index[kind][key] = {"file": rel.as_posix(), **_entry(text)}
digest = hashlib.sha256(
"".join(f"{p.relative_to(output).as_posix()} {_entry(t)['sha256']}\n" for p, t in sorted(files.items())).encode()
).hexdigest()
index["data_version"] = digest[:16]
index["licences"] = sorted(
{json.dumps(src.get("licence"), sort_keys=True)
for doc in systems.values() for src in doc.get("identify", {}).get("sources", [])
if src.get("licence")}
)
index["licences"] = [json.loads(x) for x in index["licences"]]
containers = _load_yaml(inputs.games / "headers.yml").get("containers")
if containers:
index["containers"] = containers
index["folders"] = folder_systems(setups)
files[output / "index.json"] = dumps(index)
coverage = {"setups": setup_cov, "systems": system_cov, "arcade": sorted(arcade)}
return files, coverage
def floor_failures(coverage: dict) -> list[str]:
total = sum(c["folders"] for c in coverage["setups"].values())
resolved = sum(c["resolved"] for c in coverage["setups"].values())
out = []
share = resolved / total if total else 0.0
if share < FLOORS["folders_resolved_share"]:
out.append(f"folders resolved {resolved}/{total} ({share:.1%}) under {FLOORS['folders_resolved_share']:.0%}")
catalogs = sum(1 for c in coverage["systems"].values() if c["games"])
if catalogs < FLOORS["catalog_systems"]:
out.append(f"systems with a game catalog {catalogs} under {FLOORS['catalog_systems']}")
if len(coverage["arcade"]) < FLOORS["arcade_profiles"]:
out.append(f"arcade profiles {len(coverage['arcade'])} under {FLOORS['arcade_profiles']}")
return out
def print_coverage(coverage: dict, files: dict[Path, str]) -> None:
print("Setups (folders / resolved to a system / default core profiled / with a fallback set):")
for setup, c in coverage["setups"].items():
print(f" {setup:16} {c['folders']:4} {c['resolved']:4} {c['profile']:4} {c['fallback']:4}")
print("Systems (games by hash / serials / header readers / profiles with region files / extras):")
for system, c in coverage["systems"].items():
print(f" {system:28} {c['games']:6} {c['serials']:6} {c['header_readers']:3} "
f"{c['region_profiles']:3} {'yes' if c['extras'] else '-'}")
print(f"Arcade indexes: {', '.join(coverage['arcade']) or 'none'}")
raw = sum(len(t.encode()) for t in files.values())
packed = sum(len(gzip.compress(t.encode(), 9, mtime=0)) for t in files.values())
print(f"{len(files)} files, {raw:,} bytes, {packed:,} bytes gzip")
def _sample(items: list[str], limit: int = 3) -> str:
shown = ", ".join(items[:limit])
return f"{shown}, +{len(items) - limit} more" if len(items) > limit else shown
def describe_change(old: str | None, new: str) -> list[str]:
"""What differs between a published document and the one render() makes.
The documents are single-line JSON of up to 550 KB: STALE alone left a
diff by hand to find that a manifest gained one file."""
if old is None:
return ["not written yet"]
try:
before, after = json.loads(old), json.loads(new)
except ValueError:
return ["the published file is not valid JSON"]
if not (isinstance(before, dict) and isinstance(after, dict)):
return ["document changed"]
parts = []
for key in sorted(set(before) | set(after)):
a, b = before.get(key), after.get(key)
if a == b:
continue
if isinstance(a, list) and isinstance(b, list):
olds = {json.dumps(x, sort_keys=True) for x in a}
news = {json.dumps(x, sort_keys=True) for x in b}
added = sorted(news - olds)
removed = sorted(olds - news)
change = []
if added:
change.append(f"{len(added)} added ({_sample(added)})")
if removed:
change.append(f"{len(removed)} removed ({_sample(removed)})")
parts.append(f"{key}: {', '.join(change) or 'reordered'}")
elif isinstance(a, dict) and isinstance(b, dict):
changed = sorted(k for k in set(a) | set(b) if a.get(k) != b.get(k))
parts.append(f"{key}: {len(changed)} changed ({_sample(changed)})")
else:
parts.append(f"{key} changed" if key in before and key in after
else f"{key} {'added' if key in after else 'removed'}")
return parts or ["formatting changed"]
def main() -> int:
parser = argparse.ArgumentParser(allow_abbrev=False, description=__doc__.splitlines()[0])
parser.add_argument("--output-dir", type=Path, default=OUTPUT,
help=f"where the index is written (default {OUTPUT})")
parser.add_argument("--check", action="store_true",
help="exit 1 when a file would change, naming what differs (implies --quiet)")
parser.add_argument("--quiet", action="store_true", help="print only failures")
args = parser.parse_args()
files, coverage = render(args.output_dir)
if not (args.quiet or args.check):
print_coverage(coverage, files)
failures = floor_failures(coverage)
for failure in failures:
print(f"FLOOR {failure}", file=sys.stderr)
stale = sorted(
p for p in args.output_dir.rglob("*.json") if p not in files
) if args.output_dir.is_dir() else []
changed = [p for p, t in files.items() if not p.exists() or p.read_text(encoding="utf-8") != t]
if args.check:
for path in changed:
print(f"STALE {path}", file=sys.stderr)
current = path.read_text(encoding="utf-8") if path.exists() else None
for line in describe_change(current, files[path]):
print(f" {line}", file=sys.stderr)
for path in stale:
print(f"STALE {path}", file=sys.stderr)
print(" no longer generated", file=sys.stderr)
if changed or stale:
print("Run python scripts/generate_games_index.py to write them.", file=sys.stderr)
return 1 if changed or stale or failures else 0
for path in stale:
path.unlink()
for path in changed:
path.parent.mkdir(parents=True, exist_ok=True)
write_text_atomic(str(path), files[path])
print(f"{len(changed)} written, {len(stale)} removed")
return 1 if failures else 0
if __name__ == "__main__":
run_cli(main)