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#! /usr/bin/env nix-shell
#! nix-shell -i python3 -p python3 nix nix-prefetch-git
import fileinput
import json
import os
import sys
import re
import subprocess
from datetime import datetime
from urllib.request import urlopen, Request
def panic(exc):
raise Exception(exc)
DIR = os.path.dirname(os.path.abspath(__file__))
HEADERS = {'Accept': 'application/vnd.github.v3+json'}
def github_api_request(endpoint):
base_url = 'https://api.github.com/'
request = Request(base_url + endpoint, headers=HEADERS)
with urlopen(request) as http_response:
return json.loads(http_response.read().decode('utf-8'))
def get_commit_date(repo, sha):
url = f'https://api.github.com/repos/{repo}/commits/{sha}'
request = Request(url, headers=HEADERS)
with urlopen(request) as http_response:
commit = json.loads(http_response.read().decode())
date = commit['commit']['committer']['date'].rstrip('Z')
date = datetime.fromisoformat(date).date().isoformat()
return 'unstable-' + date
def nix_prefetch_git(url, rev):
"""Prefetches the requested Git revision (incl. submodules) of the given repository URL."""
print(f'nix-prefetch-git {url} {rev}')
out = subprocess.check_output([
'nix-prefetch-git', '--quiet',
'--url', url,
'--rev', rev,
'--fetch-submodules'])
return json.loads(out)['sha256']
def nix_prefetch_url(url, unpack=False):
"""Prefetches the content of the given URL."""
print(f'nix-prefetch-url {url}')
options = ['--type', 'sha256']
if unpack:
options += ['--unpack']
out = subprocess.check_output(['nix-prefetch-url'] + options + [url])
return out.decode('utf-8').rstrip()
def update_file(relpath, variant, version, suffix, sha256):
file_path = os.path.join(DIR, relpath)
with fileinput.FileInput(file_path, inplace=True) as f:
for line in f:
result = line
result = re.sub(
fr'^ version = ".+"; #{variant}',
f' version = "{version}"; #{variant}',
result)
result = re.sub(
fr'^ suffix = ".+"; #{variant}',
f' suffix = "{suffix}"; #{variant}',
result)
result = re.sub(
fr'^ sha256 = ".+"; #{variant}',
f' sha256 = "{sha256}"; #{variant}',
result)
print(result, end='')
def read_file(relpath, variant):
file_path = os.path.join(DIR, relpath)
re_version = re.compile(fr'^\s*version = "(.+)"; #{variant}')
re_suffix = re.compile(fr'^\s*suffix = "(.+)"; #{variant}')
version = None
suffix = None
with fileinput.FileInput(file_path, mode='r') as f:
for line in f:
version_match = re_version.match(line)
if version_match:
version = version_match.group(1)
continue
suffix_match = re_suffix.match(line)
if suffix_match:
suffix = suffix_match.group(1)
continue
if version and suffix:
break
return version, suffix
if __name__ == "__main__":
if len(sys.argv) == 1:
panic("Update variant expected")
variant = sys.argv[1]
if variant not in ("zen", "lqx"):
panic(f"Unexepected variant instead of 'zen' or 'lqx': {sys.argv[1]}")
pattern = re.compile(fr"v(\d+\.\d+\.?\d*)-({variant}\d+)")
zen_tags = github_api_request('repos/zen-kernel/zen-kernel/releases')
for tag in zen_tags:
zen_match = pattern.match(tag['tag_name'])
if zen_match:
zen_tag = zen_match.group(0)
zen_version = zen_match.group(1)
zen_suffix = zen_match.group(2)
break
old_version, old_suffix = read_file('zen-kernels.nix', variant)
if old_version != zen_version or old_suffix != zen_suffix:
zen_hash = nix_prefetch_git('https://github.com/zen-kernel/zen-kernel.git', zen_tag)
update_file('zen-kernels.nix', variant, zen_version, zen_suffix, zen_hash)
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