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#!/usr/bin/env nix-shell
#!nix-shell -i python3 -p "python3.withPackages (ps: [ ps.beautifulsoup4 ps.lxml ])"
import json
import os
import pathlib
import subprocess
import sys
import urllib.request
from dataclasses import dataclass
from enum import Enum
from bs4 import BeautifulSoup, NavigableString, Tag
HERE = pathlib.Path(__file__).parent
ROOT = HERE.parent.parent.parent.parent
VERSIONS_FILE = HERE / "kernels-org.json"
class KernelNature(Enum):
MAINLINE = 1
STABLE = 2
LONGTERM = 3
@dataclass
class KernelRelease:
nature: KernelNature
version: str
branch: str
date: str
link: str
eol: bool = False
def parse_release(release: Tag) -> KernelRelease | None:
columns: list[Tag] = list(release.find_all("td"))
try:
nature = KernelNature[columns[0].get_text().rstrip(":").upper()]
except KeyError:
return None
version = columns[1].get_text().rstrip(" [EOL]")
date = columns[2].get_text()
link = columns[3].find("a")
if link is not None and isinstance(link, Tag):
link = link.attrs.get("href")
assert link is not None, f"link for kernel {version} is non-existent"
eol = bool(release.find(class_="eolkernel"))
return KernelRelease(
nature=nature,
branch=get_branch(version),
version=version,
date=date,
link=link,
eol=eol,
)
def get_branch(version: str):
# This is a testing kernel.
if "rc" in version:
return "testing"
else:
major, minor, *_ = version.split(".")
return f"{major}.{minor}"
def get_hash(kernel: KernelRelease):
if kernel.branch == "testing":
args = ["--unpack"]
else:
args = []
hash = (
subprocess.check_output(["nix-prefetch-url", kernel.link] + args)
.decode()
.strip()
)
return f"sha256:{hash}"
def commit(message):
return subprocess.check_call(["git", "commit", "-m", message, VERSIONS_FILE])
def main():
kernel_org = urllib.request.urlopen("https://kernel.org/")
soup = BeautifulSoup(kernel_org.read().decode(), "lxml")
release_table = soup.find(id="releases")
if not release_table or isinstance(release_table, NavigableString):
print(release_table, file=sys.stderr)
print("Failed to find the release table on https://kernel.org", file=sys.stderr)
sys.exit(1)
releases = release_table.find_all("tr")
parsed_releases = filter(None, [parse_release(release) for release in releases])
all_kernels = json.load(VERSIONS_FILE.open())
for kernel in parsed_releases:
branch = get_branch(kernel.version)
nixpkgs_branch = branch.replace(".", "_")
old_version = all_kernels.get(branch, {}).get("version")
if old_version == kernel.version:
print(f"linux_{nixpkgs_branch}: {kernel.version} is latest, skipping...")
continue
if old_version is None:
message = f"linux_{nixpkgs_branch}: init at {kernel.version}"
else:
message = f"linux_{nixpkgs_branch}: {old_version} -> {kernel.version}"
print(message, file=sys.stderr)
all_kernels[branch] = {
"version": kernel.version,
"hash": get_hash(kernel),
}
with VERSIONS_FILE.open("w") as fd:
json.dump(all_kernels, fd, indent=4)
fd.write("\n") # makes editorconfig happy
if os.environ.get("COMMIT") == "1":
commit(message)
if __name__ == "__main__":
main()
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