The Nix Hour

Currently Playing: The Nix Hour #51 [Zero Hydra Failures, fixing "root" package]

Questions can only be asked by voice or chat in the meeting: https://meet.zrh.init7.net/nix-hour. The Nix Hour is an open beginner-oriented Q&A-style lecture on Nix, where you can bring your questions and we’ll answer them with more context, examples, alternatives, tradeoffs and related topics. Matrix room for questions, feedback and notifications: https://matrix.to/#/%23nix-hour:matrix.org Issue tracker for asynchronous questions: https://github.com/tweag/nix-hour/issues Previous sessions playlist: https://www.youtube.com/playlist?list=PLyzwHTVJlRc8yjlx4VR4LU5A5O44og9in For more information and updates, check out https://discourse.nixos.org/t/the-nix-hour-a-weekly-nix-qa-lecture-by-tweag/22767 PR created during this session can be found at https://github.com/NixOS/nixpkgs/pull/266512 00:00 Intro, shorter recording next week 00:58 Zero Hydra Failures for NixOS 23.11 https://github.com/NixOS/nixpkgs/issues/265948 01:39 What is Zero Hydra Failures 02:49 Looking for failing packages https://malob.github.io/nix-review-tools-reports/ 05:27 Looking at failuers in "apfelgrid" package 06:41 Look for PRs or issues 08:06 Checking the build locally 10:47 Checking git log for what could break 13:41 Looking for the original PR that introduced root5 17:17 Checking upstream for the issue 19:21 Looking at "root" package upstream, 5 vs 6 22:38 Building apfelgrid with newer version of root 27:53 Navigating Hydra to see status of a package 30:00 Loking at root 6 failure 34:36 Checking the error in root 5 sources 39:06 Backporting patch from root 6 to root 5 44:14 Changing a file name in patch 51:46 Buidling root 5 locally 52:59 Build with root 6 succeeded 55:02 Technical difficulties 55:40 Committing fixes 58:26 Q: Multiple versions of "root" package in nixpkgs 59:39 Back to committing fixes 1:03:56 Publishing PR to nixpkgs https://github.com/NixOS/nixpkgs/pull/266512 1:04:52 Outro