Work on updating checksums automatically (caution, do not use in general)

import os
from conda_build import api
from conda_build.config import Config
from json import dumps
from rever.tools import hash_url

def pp(jason):
    print(dumps(jason, indent=4, sort_keys=True))

def main():
    recipe_dir = os.getcwd()
    config = Config({'variant_config_files': ['/opt/Shared.local/r/a/conda_build_config.yaml']})
    urls = set()
    for subdir in ['win-32', 'win-64', 'linux-64', 'osx-64']:
        config.host_subdir = subdir
        config.target_subdir = subdir
        metadatas = api.render(recipe_dir, config=config)
        for metadata_temp in metadatas:
            metadata, _, _ = metadata_temp
            for sources_index, sources in enumerate(metadata.meta['source']):
                urls.add(sources['url'])
    print(urls)
    for url in sorted(list(urls)):
        hash = hash_url(url)
        print('{} : {}'.format(url, hash))

if __name__ == '__main__':
    main()