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