71 lines
1.9 KiB
Python
71 lines
1.9 KiB
Python
'''
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Takes a Dart pubspec.lock file as input and outputs a specialized lock file
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that contains archive URLs and sha256 hashes for nix. Only useful in combination
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with lock2nix.py.
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'''
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import sys
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import subprocess
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import urllib
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import yaml
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import requests
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def main():
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if len(sys.argv) != 3:
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print('Usage: pubspec2lock.py <input> <output>')
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exit(1)
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input_file = sys.argv[1]
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output_file = sys.argv[2]
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with open(input_file, 'r') as f:
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data = yaml.safe_load(f.read())
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result = {
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'packages': {}
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}
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for package_name in data['packages']:
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print(package_name)
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package = data['packages'][package_name]
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cleaned_url = package["description"]["url"]
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if cleaned_url[-1] == '/':
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cleaned_url = cleaned_url[:-1]
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latest = requests.get(
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f'{cleaned_url}/api/packages/{package_name}',
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headers={
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'Accept': 'application/vnd.pub.v2+json',
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},
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)
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latest_data = None
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try:
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latest_data = latest.json()
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except:
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print(latest.text)
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exit(1)
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for version_data in latest_data['versions']:
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if version_data['version'] == package['version']:
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package['archive_url'] = version_data['archive_url']
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p = subprocess.run([
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'nix-prefetch-url',
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'--unpack',
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urllib.parse.unquote(version_data['archive_url']),
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], capture_output=True)
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sha256 = p.stdout.decode('utf8')[:-1]
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package['sha256'] = sha256
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break
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result['packages'][package_name] = package
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with open(output_file, 'w') as f:
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f.write('# CREATED BY pubspec2lock.py\n')
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f.write('# DO NOT EDIT BY HAND\n')
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f.write(yaml.dump(result))
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if __name__ == '__main__':
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main()
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