forked from mirrors/nixpkgs
66 lines
1.7 KiB
Python
Executable file
66 lines
1.7 KiB
Python
Executable file
#!/usr/bin/env python
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import argparse
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import requests
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import os
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import subprocess
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import json
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import re
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from bs4 import BeautifulSoup
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parser = argparse.ArgumentParser(
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description="Get all available versions listed for a package in a site."
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)
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parser.add_argument(
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"--pname",
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default=os.environ.get("UPDATE_NIX_PNAME"),
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required="UPDATE_NIX_PNAME" not in os.environ,
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help="name of the package",
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)
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parser.add_argument(
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"--attr-path",
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default=os.environ.get("UPDATE_NIX_ATTR_PATH"),
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help="attribute path of the package",
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)
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parser.add_argument("--url", help="url of the page that lists the package versions")
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parser.add_argument("--file", help="file name for writing debugging information")
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if __name__ == "__main__":
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args = parser.parse_args()
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pname = args.pname
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attr_path = args.attr_path or pname
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url = args.url or json.loads(
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subprocess.check_output(
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[
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"nix-instantiate",
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"--json",
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"--eval",
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"-E",
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f"with import ./. {{}}; dirOf (lib.head {attr_path}.src.urls)",
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],
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text=True,
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)
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)
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# print a debugging message
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if args.file:
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with open(args.file, "a") as f:
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f.write(f"# Listing versions for {pname} from {url}\n")
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page = requests.get(url)
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soup = BeautifulSoup(page.content, "html.parser")
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links = soup.find_all("a")
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for link in links:
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link_url = link.get("href", None)
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if link_url is not None:
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match = re.fullmatch(
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rf"{args.pname}-([\d.]+?(-[\d\w.-]+?)?)(\.tar)?(\.[^.]*)", link_url
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)
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if match:
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print(match.group(1))
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