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#!/usr/bin/env nix-shell
#!nix-shell -I nixpkgs=./ -i python3 -p "python3.withPackages (ps: with ps; [ requests ])" -p git -p nix-prefetch-github
import json
import os
import subprocess
import sys
from concurrent.futures import ThreadPoolExecutor
from pathlib import Path
import requests
SCRIPT_PATH = Path(__file__).absolute().parent
HASHES_PATH = SCRIPT_PATH / "hashes.json"
GET_REPO_THREADS = int(os.environ.get("GET_REPO_THREADS", 8))
# To add a new core, add it to the dictionary below. You need to set at least
# `repo`, that is the repository name if the owner of the repository is
# `libretro` itself, otherwise also set `owner`.
# You may set `deep_clone`, `fetch_submodules` or `leave_dot_git` options to
# `True` and they're similar to `fetchgit` options. Also if for some reason you
# need to pin a specific revision, set `rev` to a commit.
# To generate the hash file for your new core, you can run `update_cores.py
# <core>`. The script needs to be run from the root of your `nixpkgs` clone.
# Do not forget to add your core to `cores.nix` file with the proper overrides
# so the core can be build.
CORES = {
"2048": {"repo": "libretro-2048"},
"atari800": {"repo": "libretro-atari800"},
"beetle-gba": {"repo": "beetle-gba-libretro"},
"beetle-lynx": {"repo": "beetle-lynx-libretro"},
"beetle-ngp": {"repo": "beetle-ngp-libretro"},
"beetle-pce": {"repo": "beetle-pce-libretro"},
"beetle-pce-fast": {"repo": "beetle-pce-fast-libretro"},
"beetle-pcfx": {"repo": "beetle-pcfx-libretro"},
"beetle-psx": {"repo": "beetle-psx-libretro"},
"beetle-saturn": {"repo": "beetle-saturn-libretro"},
"beetle-supafaust": {"repo": "supafaust"},
"beetle-supergrafx": {"repo": "beetle-supergrafx-libretro"},
"beetle-vb": {"repo": "beetle-vb-libretro"},
"beetle-wswan": {"repo": "beetle-wswan-libretro"},
"blastem": {"repo": "blastem"},
"bluemsx": {"repo": "bluemsx-libretro"},
"bsnes": {"repo": "bsnes-libretro"},
"bsnes-hd": {"repo": "bsnes-hd", "owner": "DerKoun"},
"bsnes-mercury": {"repo": "bsnes-mercury"},
"citra": {"repo": "citra", "fetch_submodules": True},
"desmume": {"repo": "desmume"},
"desmume2015": {"repo": "desmume2015"},
"dolphin": {"repo": "dolphin"},
"dosbox": {"repo": "dosbox-libretro"},
"dosbox-pure": {"repo": "dosbox-pure", "owner": "schellingb"},
"eightyone": {"repo": "81-libretro"},
"fbalpha2012": {"repo": "fbalpha2012"},
"fbneo": {"repo": "fbneo"},
"fceumm": {"repo": "libretro-fceumm"},
"flycast": {"repo": "flycast", "owner": "flyinghead", "fetch_submodules": True},
"fmsx": {"repo": "fmsx-libretro"},
"freeintv": {"repo": "freeintv"},
"fuse": {"repo": "fuse-libretro"},
"gambatte": {"repo": "gambatte-libretro"},
"genesis-plus-gx": {"repo": "Genesis-Plus-GX"},
"gpsp": {"repo": "gpsp"},
"gw": {"repo": "gw-libretro"},
"handy": {"repo": "libretro-handy"},
"hatari": {"repo": "hatari"},
"mame": {"repo": "mame"},
"mame2000": {"repo": "mame2000-libretro"},
"mame2003": {"repo": "mame2003-libretro"},
"mame2003-plus": {"repo": "mame2003-plus-libretro"},
"mame2010": {"repo": "mame2010-libretro"},
"mame2015": {"repo": "mame2015-libretro"},
"mame2016": {"repo": "mame2016-libretro"},
"melonds": {"repo": "melonds"},
"mesen": {"repo": "mesen"},
"mesen-s": {"repo": "mesen-s"},
"meteor": {"repo": "meteor-libretro"},
"mrboom": {"repo": "mrboom-libretro", "owner": "Javanaise", "fetch_submodules": True},
"mgba": {"repo": "mgba"},
"mupen64plus": {"repo": "mupen64plus-libretro-nx"},
"neocd": {"repo": "neocd_libretro"},
"nestopia": {"repo": "nestopia"},
"nxengine": {"repo": "nxengine-libretro"},
"np2kai": {"repo": "NP2kai", "owner": "AZO234", "fetch_submodules": True},
"o2em": {"repo": "libretro-o2em"},
"opera": {"repo": "opera-libretro"},
"parallel-n64": {"repo": "parallel-n64"},
# libretro/lrps2 is a hard-fork of pcsx2 with simplified code to target
# only libretro, while libretro/pcsx2 is supposedly closer to upstream but
# it is a WIP.
# TODO: switch to libretro/pcsx2 when upstream switches to it.
"pcsx2": {"repo": "lrps2"},
"pcsx_rearmed": {"repo": "pcsx_rearmed"},
"picodrive": {"repo": "picodrive", "fetch_submodules": True},
"play": {"repo": "Play-", "owner": "jpd002", "fetch_submodules": True},
"ppsspp": {"repo": "ppsspp", "owner": "hrydgard", "fetch_submodules": True},
"prboom": {"repo": "libretro-prboom"},
"prosystem": {"repo": "prosystem-libretro"},
"puae": {"repo": "libretro-uae"},
"quicknes": {"repo": "QuickNES_Core"},
"sameboy": {"repo": "sameboy"},
"same_cdi": {"repo": "same_cdi"},
# This is the old source code before they upstreamed the source code,
# so now the libretro related code lives in the scummvm/scummvm repository.
# However this broke the old way we were doing builds, so for now point
# to a mirror with the old source code until this issue is fixed.
# TODO: switch to libretro/scummvm since this is more up-to-date
"scummvm": {"repo": "scummvm", "owner": "libretro-mirrors"},
"smsplus-gx": {"repo": "smsplus-gx"},
"snes9x": {"repo": "snes9x", "owner": "snes9xgit"},
"snes9x2002": {"repo": "snes9x2002"},
"snes9x2005": {"repo": "snes9x2005"},
"snes9x2010": {"repo": "snes9x2010"},
"stella": {"repo": "stella", "owner": "stella-emu"},
"stella2014": {"repo": "stella2014-libretro"},
"swanstation": {"repo": "swanstation"},
"tgbdual": {"repo": "tgbdual-libretro"},
"thepowdertoy": {"repo": "ThePowderToy"},
"tic80": {"repo": "tic-80", "fetch_submodules": True},
"vba-m": {"repo": "vbam-libretro"},
"vba-next": {"repo": "vba-next"},
"vecx": {"repo": "libretro-vecx"},
"virtualjaguar": {"repo": "virtualjaguar-libretro"},
"yabause": {"repo": "yabause"},
}
def info(*msg):
print(*msg, file=sys.stderr)
def get_rev_date_fetchFromGitHub(repo, owner, rev):
# https://docs.github.com/en/rest/commits/commits?apiVersion=2022-11-28#get-a-commit
url = f"https://api.github.com/repos/{owner}/{repo}/commits/{rev}"
headers = {
"Accept": "application/vnd.github+json",
"X-GitHub-Api-Version": "2022-11-28",
}
if token := os.environ.get("GITHUB_TOKEN"):
headers["Authorization"] = f"Bearer {token}"
r = requests.get(url, headers=headers)
try:
j = r.json()
except requests.exceptions.JSONDecodeError:
return None
date = j.get("commit", {}).get("committer", {}).get("date")
if date:
# Date format returned by API: 2023-01-30T06:29:13Z
return f"unstable-{date[:10]}"
else:
return None
def get_repo_hash_fetchFromGitHub(
repo,
owner="libretro",
deep_clone=False,
fetch_submodules=False,
leave_dot_git=False,
rev=None,
):
extra_args = []
if deep_clone:
extra_args.append("--deep-clone")
else:
extra_args.append("--no-deep-clone")
if fetch_submodules:
extra_args.append("--fetch-submodules")
else:
extra_args.append("--no-fetch-submodules")
if leave_dot_git:
extra_args.append("--leave-dot-git")
else:
extra_args.append("--no-leave-dot-git")
if rev:
extra_args.append("--rev")
extra_args.append(rev)
result = subprocess.run(
["nix-prefetch-github", owner, repo, *extra_args],
check=True,
capture_output=True,
text=True,
)
j = json.loads(result.stdout)
date = get_rev_date_fetchFromGitHub(repo, owner, j["rev"])
if date:
j["date"] = date
# Remove False values
return {k: v for k, v in j.items() if v}
def get_repo_hash(fetcher="fetchFromGitHub", **kwargs):
if fetcher == "fetchFromGitHub":
return get_repo_hash_fetchFromGitHub(**kwargs)
else:
raise ValueError(f"Unsupported fetcher: {fetcher}")
def get_repo_hashes(cores={}):
def get_repo_hash_from_core_def(core_def):
core, repo = core_def
info(f"Getting repo hash for '{core}'...")
result = core, get_repo_hash(**repo)
info(f"Got repo hash for '{core}'!")
return result
with open(HASHES_PATH) as f:
repo_hashes = json.loads(f.read())
info(f"Running with {GET_REPO_THREADS} threads!")
with ThreadPoolExecutor(max_workers=GET_REPO_THREADS) as executor:
new_repo_hashes = executor.map(get_repo_hash_from_core_def, cores.items())
for core, repo in new_repo_hashes:
repo_hashes[core] = repo
return repo_hashes
def main():
# If you don't want to update all cores, pass the name of the cores you
# want to update on the command line. E.g.:
# $ ./update.py citra snes9x
if len(sys.argv) > 1:
cores_to_update = sys.argv[1:]
else:
cores_to_update = CORES.keys()
cores = {core: repo for core, repo in CORES.items() if core in cores_to_update}
repo_hashes = get_repo_hashes(cores)
info(f"Generating '{HASHES_PATH}'...")
with open(HASHES_PATH, "w") as f:
f.write(json.dumps(dict(sorted(repo_hashes.items())), indent=4))
f.write("\n")
info("Finished!")
if __name__ == "__main__":
main()
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