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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990#! /usr/bin/env nix-shell#! nix-shell -i python3 -p python3 nix
import csvimport fileinputimport jsonimport osimport reimport subprocessimport sys
from codecs import iterdecodefrom datetime import datetimefrom urllib.request import urlopen, Request
DEFAULT_NIX = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'default.nix')
def get_latest_chromium_build(): RELEASES_URL = 'https://versionhistory.googleapis.com/v1/chrome/platforms/linux/channels/dev/versions/all/releases?filter=endtime=none&order_by=version%20desc' print(f'GET {RELEASES_URL}') with urlopen(RELEASES_URL) as resp: return json.load(resp)['releases'][0]
def get_file_revision(revision, file_path): """Fetches the requested Git revision of the given Chromium file.""" url = f'https://raw.githubusercontent.com/chromium/chromium/{revision}/{file_path}' with urlopen(url) as http_response: return http_response.read().decode()
def get_commit(ref): url = f'https://api.github.com/repos/llvm/llvm-project/commits/{ref}' headers = {'Accept': 'application/vnd.github.v3+json'} request = Request(url, headers=headers) with urlopen(request) as http_response: return json.loads(http_response.read().decode())
def get_current_revision(): """Get the current revision of llvmPackages_git.""" with open(DEFAULT_NIX) as f: for line in f: rev = re.search(r'^ rev = "(.*)";', line) if rev: return rev.group(1) sys.exit(1)
def nix_prefetch_url(url, algo='sha256'): """Prefetches the content of the given URL.""" print(f'nix-prefetch-url {url}') out = subprocess.check_output(['nix-prefetch-url', '--type', algo, '--unpack', url]) return out.decode('utf-8').rstrip()
chromium_build = get_latest_chromium_build()chromium_version = chromium_build['version']print(f'chromiumDev version: {chromium_version}')print('Getting LLVM commit...')clang_update_script = get_file_revision(chromium_version, 'tools/clang/scripts/update.py')clang_revision = re.search(r"^CLANG_REVISION = '(.+)'$", clang_update_script, re.MULTILINE).group(1)clang_commit_short = re.search(r"llvmorg-[0-9]+-init-[0-9]+-g([0-9a-f]{8})", clang_revision).group(1)release_version = re.search(r"^RELEASE_VERSION = '(.+)'$", clang_update_script, re.MULTILINE).group(1)commit = get_commit(clang_commit_short)if get_current_revision() == commit["sha"]: print('No new update available.') sys.exit(0)date = datetime.fromisoformat(commit['commit']['committer']['date'].rstrip('Z')).date().isoformat()version = f'unstable-{date}'print('Prefetching source tarball...')hash = nix_prefetch_url(f'https://github.com/llvm/llvm-project/archive/{commit["sha"]}.tar.gz')print('Updating default.nix...')with fileinput.FileInput(DEFAULT_NIX, inplace=True) as f: for line in f: if match := re.search(r'^ rev-version = "unstable-(.+)";', line): old_date = match.group(1) result = line result = re.sub(r'^ version = ".+";', f' version = "{release_version}";', result) result = re.sub(r'^ rev = ".*";', f' rev = "{commit["sha"]}";', result) result = re.sub(r'^ rev-version = ".+";', f' rev-version = "{version}";', result) result = re.sub(r'^ sha256 = ".+";', f' sha256 = "{hash}";', result) print(result, end='')# Commit the result:commit_message = f"llvmPackages_git: {old_date} -> {date}"subprocess.run(['git', 'add', DEFAULT_NIX], check=True)subprocess.run(['git', 'commit', '--file=-'], input=commit_message.encode(), check=True)