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import subprocess
import requests
import string
from pathlib import Path
from email.utils import parsedate_to_datetime
from datetime import datetime, timedelta, timezone
NAME = 'linux-lts'
REPO = 'core'
# Script to update the PKGBUILD to the latest [core]/linux-lts
def get_current_version():
pkgbuild = Path('.SRCINFO').read_text('utf8')
pkgver = pkgbuild.split('pkgver =', 1)[1].splitlines()[0].strip()
pkgrel = pkgbuild.split('pkgrel =', 1)[1].splitlines()[0].strip()
return pkgver, pkgrel
def get_pkg_info(pkgname):
url = f"https://archlinux.org/packages/{REPO}/x86_64/{pkgname}/json/"
response = requests.get(url, timeout=10)
return response.json()
def get_arch_archive_age(filename):
"""Check if a package file is on the Arch Linux Archive and return its age as a
datetime.timedelta, or timedelta(0) if it's a 404"""
url = f"https://archive.archlinux.org/packages/.all/{filename}"
response = requests.head(url, timeout=10)
if not response.ok:
return timedelta(0)
now = datetime.now(timezone.utc)
last_modified = parsedate_to_datetime(response.headers['Last-Modified'])
return now - last_modified
class Template(string.Template):
delimiter="%"
def arr(name, values):
delimiter = '\n' + ' ' * (len(name) + 4)
values = [f"'{value}'" if ':' in value else value for value in values]
return f"{name}=({delimiter.join(values)})"
def update(kern_info):
headers_info = get_pkg_info(f'{NAME}-headers')
docs_info = get_pkg_info(f'{NAME}-docs')
template = Template(Path('PKGBUILD.template').read_text('utf8'))
pkgbuild = template.substitute(
PKGVER=kern_info['pkgver'],
PKGREL=kern_info['pkgrel'],
URL=kern_info['url'],
KERN_PKG=kern_info['filename'],
KERN_PKGDESC=kern_info['pkgdesc'],
KERN_DEPENDS=arr("depends", kern_info['depends']),
KERN_CONFLICTS=arr("conflicts", kern_info['conflicts'] + ['"${_pkgname}"']),
KERN_OPTDEPENDS=arr("optdepends", kern_info['optdepends']),
KERN_PROVIDES=arr("provides", kern_info['provides']),
KERN_REPLACES=arr("replaces", kern_info['replaces']),
HEADERS_PKG=headers_info['filename'],
HEADERS_PKGDESC=headers_info['pkgdesc'],
HEADERS_DEPENDS=arr("depends", headers_info['depends']),
HEADERS_CONFLICTS=arr(
"conflicts", headers_info['conflicts'] + ['"${_pkgname}-headers"']
),
HEADERS_OPTDEPENDS=arr("optdepends", headers_info['optdepends']),
HEADERS_PROVIDES=arr("provides", headers_info['provides']),
HEADERS_REPLACES=arr("replaces", headers_info['replaces']),
DOCS_PKG=docs_info['filename'],
DOCS_PKGDESC=docs_info['pkgdesc'],
DOCS_DEPENDS=arr("depends", docs_info['depends']),
DOCS_CONFLICTS=arr(
"conflicts", docs_info['conflicts'] + ['"${_pkgname}-docs"']
),
DOCS_OPTDEPENDS=arr("optdepends", docs_info['optdepends']),
DOCS_PROVIDES=arr("provides", docs_info['provides']),
DOCS_REPLACES=arr("replaces", docs_info['replaces']),
)
# Delete empty arrays:
pkgbuild = '\n'.join(
line for line in pkgbuild.splitlines() if not line.endswith('=()')
)
Path('PKGBUILD').write_text(pkgbuild + '\n', 'utf8')
# Update source sha256sums and then delete the files:
subprocess.check_call(['updpkgsums'])
for info in [kern_info, headers_info, docs_info]:
Path(info['filename']).unlink(missing_ok=True)
# srcinfo
with open('.SRCINFO', 'w', encoding='utf8') as f:
f.write(subprocess.check_output(['makepkg', '--printsrcinfo']).decode())
# commit and push
subprocess.check_call(['git', 'add', 'PKGBUILD', '.SRCINFO'])
subprocess.check_call(
['git', 'commit', '-m', f"{kern_info['pkgver']}-{kern_info['pkgrel']}"]
)
subprocess.check_call(['git', 'push'])
if __name__ == '__main__':
# Minimum age of a kernel package file on the Arch Linux Archive before we consider
# updating to it. This is to avoid things like the mirror being partially updated,
# or the kernel pulling in a dependency not yet in the users' mirror, etc.
MINIMUM_PACKAGE_AGE = timedelta(days=1)
kern_info = get_pkg_info(NAME)
current_version = get_current_version()
latest_version = kern_info['pkgver'], kern_info['pkgrel']
arch_archive_age = get_arch_archive_age(kern_info['filename'])
if (current_version != latest_version) and arch_archive_age > MINIMUM_PACKAGE_AGE:
print(f"{NAME}-versioned-bin is out of date!")
update(kern_info)
else:
print(f"{NAME}-versioned-bin is up to date")
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