What does HackerNews think of bors-ng?

👁 A merge bot for GitHub Pull Requests

Language: Elixir

#4 in Continuous integration
#4 in Elixir
Pull request merge queue (public beta) | Feb 2023
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Not sure if this does the same thing, but bors[1], another implementation of this concept, will batch together multiple PRs into a single CI run and follow a git-bisect-like workflow to identify the bad PR if a batch fails.

[1] https://github.com/bors-ng/bors-ng
Ask HN: How are pull requests integrated in a repo with high commit frequency? | Apr 2022
Check out something like Bors, which implements a paradigm that fixes this class of issue: https://github.com/bors-ng/bors-ng

(Homepage: https://bors.tech/)

Launch HN: MergeQueue (YC S21) – Automate rebasing and merging for your codebase | Jul 2021
Started making something similar then joined a new company (Brex) and we use https://github.com/bors-ng/bors-ng which is open source and works great. It merges huge batches of PRs and can automatically bisect them if they fail CI checks to find divide and conquer and merge in fewest batches possible. It’s written in Elixir.
Launch HN: MergeQueue (YC S21) – Automate rebasing and merging for your codebase | Jul 2021
How does this compare to Bors NG?

https://github.com/bors-ng/bors-ng

A Continuous Integration Mystery | Dec 2020
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Here is one https://github.com/bors-ng/bors-ng
A Continuous Integration Mystery | Dec 2020
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> Should CI create a merged branch behind-the-scenes and run tests on that before allowing the branch to be merged?

The answer to that is: yes. The final test cycle before landing code to master MUST be against the code that would be in master after merging.

This is what the better workflow tools do, among other things to prevent these weird error situations. We have Marge-bot for Gitlab. Uber open-sourced their tool for the same some time back.[0] Bors comes up often as a reference, too.[1]

0: Discussion at the time: https://news.ycombinator.com/item?id=19692820

1: https://github.com/bors-ng/bors-ng
Clang-11.0.0 Miscompiled SQLite | Jun 2020
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Yes, which is why bors-ng[0] is a thing. The fact that LLVM doesn't use it (or something similar) is strange.

[0]: https://github.com/bors-ng/bors-ng
Successfully Merging the Work of 1000 Developers | Nov 2019
This is exactly the kind of workflow that Bors (https://github.com/bors-ng/bors-ng) automates.

In addition to Bors, there are a number of apps and services that automate this kind of workflow. Here is an incomplete list: https://forum.bors.tech/t/other-apps-that-implement-the-nrsr...

Edited to add: Graydon Hoare (creator of Rust) called this the Not Rocket Science Rule Of Software Engineering (NRSROSE): "automatically maintain a repository of code that always passes all the tests" - https://graydon2.dreamwidth.org/1597.html

Disclaimer: I have contributed code to Bors.

Why Google Stores Billions of Lines of Code in a Single Repository (2016) | Jul 2018
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Agreed about the lack of monorepo tooling. There's just not that much out there. A couple of other links I didn't see in the awesome-monorepo:

- https://github.com/facebookexperimental/mononoke - I hear this is a real thing and not a science fair project

- https://github.com/bors-ng/bors-ng - Needed in a monorepo to handle high arrival rate of commits / merges