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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 re
import subprocess
from datetime import datetime
from urllib.request import urlopen, Request
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, version, 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(r'^ version = ".+";', f' version = "{version}";', result)
result = re.sub(r'^ sha256 = ".+";', f' sha256 = "{sha256}";', result)
print(result, end='')
if __name__ == "__main__":
bottles_version = github_api_request('repos/bottlesdevs/Bottles/releases/latest')['tag_name']
bottles_hash = nix_prefetch_git('https://github.com/bottlesdevs/Bottles.git', bottles_version)
update_file('default.nix', bottles_version, bottles_hash)
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