How to get notification if package fails to build on Hydra?

Development
1

Is there any way to get notification when package fails to build on Hydra or the build succeeds after previous failures ?

Recently, some of the packages which I maintain got broken due to change in dependencies (which I don’t maintain) and I didn’t know about that. Next time, I want to know immediately when Hydra build starts failing.

Any suggestions ?

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2

Common request that seems to come up about once a year:

The most-succinct comment I recall seeing on the issue/status is probably:

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3

Thank you very much. Sorry for not searching by myself.

4

If you want to get the list of all packages failing on Hydra that you maintain, Hydra failures (7c6f434c) seems to be at least something.

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5

I made simple Hydra web scraping script which will print last build status of package

#! /usr/bin/env nix-shell
#! nix-shell -i python3 -p python3Packages.requests python3Packages.beautifulsoup4

import sys

import requests
from bs4 import BeautifulSoup


pkgs = sys.argv[1:]


exit_code = 0
for pkg in pkgs:
    URL = f"https://hydra.nixos.org/job/nixpkgs/trunk/{pkg}.x86_64-linux/all"
    page = requests.get(URL)

    soup = BeautifulSoup(page.content, "html.parser")

    results_table = soup.find("table", class_="table")
    build_results = results_table.find_all("tr")
    build_result = build_results[1].find_all("td")
    build_status = build_result[0].img["alt"]

    print(f"{pkg} - {build_status}")

    if build_status != "Succeeded": exit_code = 1

sys.exit(exit_code)

Example:

$ ./hydra-build-status.py gdal pdal qgis qgis-ltr
gdal - Succeeded
pdal - Succeeded
qgis - Cancelled
qgis-ltr - Dependency failed

EDIT: Script will end with exit code 1 if Hydra build is not successful for some package. You can run it in your CI and it will notify you with failure.

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6

I ended up implementing this Github Action which gives me this output .

Action runs 12 hours. I hope it wouldn’t put too much load on Hydra server, especially when more people will use it.

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7

I expect it would be a bit more efficient to use /latest instead of /all, but hopefully it’s not significant anyway.

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