NixOS 23.11 — Zero Hydra Failures #265948
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This issue has been mentioned on NixOS Discourse. There might be relevant details there: https://discourse.nixos.org/t/zero-hydra-failure-23-11-edition/35103/1 |
figsoda
added
the
0.kind: ZHF Fixes
ghost
mentioned this issue
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@figsoda - You have a typo in line 3 - you mention release at end of "may" instead of "November". I guess the end of November release is also 23.11 a few lines later. (oh the joy of cut and paste - I feel for you!!) |
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@paul-jewell Good catch! thanks |
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I can't seem to find a way to add the ZHF Fixes label to my PRs. Can someone give me a hint? |
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I still have a follow-up question to this latest ZHF :) I decided to keep on looking if I can maybe create PRs for another couple of builds when/if I have the time to do so (with some success: #270233). Since ZHF is a thing, I assume such drive-by-PRs are still beneficial on the whole. Since I'm still new to this: Is there some protocol to such fixes? |
Awesome work! Yeah these contributions are always welcome. Generally I think we should prefer fixing more bugs over adding features. Though also some work can get rather tedious, so we should also invest some time in trying to improve automation (this generally requires rather deep knowledge though).
The listed maintainers should automatically be requested for a review if you use the It can totally happen that PRs aren't getting reviewed though. It's not great but it's because Nixpkgs has a lot less reviewers than committers. So to combat that, I recommend reviewing others PRs, so that committers have an easier time merging it. |
ghost
mentioned this issue
bazel_6 https://hydra.nixos.org/build/241090720/nixlog/1 ``` external/upb/upb/upb.c:228:25: error: defining a type within '__builtin_offsetof' is a Clang extension [-Werror,-Wgnu-offsetof-extensions] n = UPB_ALIGN_DOWN(n, UPB_ALIGN_OF(upb_Arena)); ^~~~~~~~~~~~~~~~~~~~~~~ ``` bazel_6 https://hydra.nixos.org/build/241127779/nixlog/1 ``` In file included from external/com_google_absl/absl/algorithm/container.h:55: external/com_google_absl/absl/meta/type_traits.h:560:8: error: builtin __has_trivial_assign is deprecated; use __is_trivially_assignable instead [-Werror,-Wdeprecated-builtins] (__has_trivial_assign(ExtentsRemoved) || !kIsCopyOrMoveAssignable) && ^ ``` Note: `bazel_5` and `bazel_4` require more work, for some reason extra `-Wall` in combination with `-Werror` sneaks in and overrides `-Wno-` settings, haven't managed yet to debug where exactly are the last flags (last one wins) come from there. ZHF: #265948 (cherry picked from commit ed175a6)
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NixOS 23.11 has been released on 2023-11-29, and ZHF has ended. We still greatly appreciate any fixes for broken packages, but I will go ahead and close this issue now. |
https://hydra.nixos.org/build/240805256/nixlog/1 https://hydra.nixos.org/build/240805170/nixlog/2 Failure is a bit obscured but long story short, a script within bazel gets custom nixpkgs shebang which in turn makes shell run in POSIX-compatible mode. Bazel expects bash in non-POSIX mode and osx-specific script starts to fail due to `set -e` and subshell interaction differences in those modes (sub-shells and functions suddently start inheriting `set -e` and fail to produce desired output). More debug info is available in #267670 Shell scripts aren't guaranteed to work as interpreters in shebang. In particular thin shell wrappers aren't shebang-ready on MacOS. It may work sometimes depending on what exactly would try to execute a script with such shebang, but generally it's not guaranteed to work. See #124556 Bash wrapper was introduced in #266847 and so far seems like the issue only affects darwin builds: hydra failure is in osx-specific script, also shebang issue is usually darwin-specific. Let's wrap it as a native binary to make it shebang-compatible. The wrapper is only currently added to `bazel_6` so no need for changes in other versions. ZHF: #265948 (cherry picked from commit 7377bba)
https://hydra.nixos.org/build/240805256/nixlog/1 https://hydra.nixos.org/build/240805170/nixlog/2 Failure is a bit obscured but long story short, a script within bazel gets custom nixpkgs shebang which in turn makes shell run in POSIX-compatible mode. Bazel expects bash in non-POSIX mode and osx-specific script starts to fail due to `set -e` and subshell interaction differences in those modes (sub-shells and functions suddently start inheriting `set -e` and fail to produce desired output). More debug info is available in #267670 Shell scripts aren't guaranteed to work as interpreters in shebang. In particular thin shell wrappers aren't shebang-ready on MacOS. It may work sometimes depending on what exactly would try to execute a script with such shebang, but generally it's not guaranteed to work. See #124556 Bash wrapper was introduced in #266847 and so far seems like the issue only affects darwin builds: hydra failure is in osx-specific script, also shebang issue is usually darwin-specific. Let's wrap it as a native binary to make it shebang-compatible. The wrapper is only currently added to `bazel_6` so no need for changes in other versions. ZHF: #265948 (cherry picked from commit 7377bba)
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This issue has been mentioned on NixOS Discourse. There might be relevant details there: https://discourse.nixos.org/t/nixos-is-not-dying-please-dont-spread-fear-actively/44310/3 |
Hi, we are figsoda & Ryan Lahfa, the release managers for NixOS 23.11 ("Tapir").
Today we want to invite everyone to participate in the Zero Hydra Failures Project, wherein we prepare the package set for the upcoming release, up until its public release at the end of November.
There are only two more upcoming dates that we'd like to mention in that context:
The complete timeline can be found in the
The mission
Every time we plan to do a release, we take time to stabilize the master branch and later on the release branch.
Our goal here is to reduce the number of failing jobs on the
nixpkgs:trunknixos:trunk-combinedjobsets as much as possible before branch-off. We call this the "Zero Hydra Failure" campaign.Besides aiming for zero failed jobs, we also strive to again provide all packages that were available in the previous release.
Changes need to always target the
masterbranch. Take note that the branch-off will occur on 2023-11-20, after which ZHF changes will need to be tagged with thebackport: release-23.11label to land in the stable release.Jobsets
The relevant jobsets to check for failing jobs are:
Workflow
Finding broken packages
Eval reports
Evaluation reports provide a structural overview of the most impactful failing builds. They originated at https://github.com/nix-community/nix-review-tools and were automated over at https://github.com/malob/nix-review-tools-reports.
ZERO Hydra Failures
The platform automatically crawls Hydra and lists packages by maintainer and lists the most important dependencies (failing packages with the most dependants). It also graphs the general trend per platform.
For the record, we started ZHF here:
For comparison, last's release ZHF started there:
Check on packages you maintain
masterbranchAlternatively: you can check https://zh.fail/failed/overview.html also.
Hydra
Hydra is nixpkgs CI platform, where all active branches are built and pushed into the cache, after which channels can originate from its build results.
Submit fixes
Search through PRs to make sure none provided a fix yet. If there is one, please take the time and help review the change.
If there is no open PR, troubleshoot why it's failing and fix it.
Pull Request the fix against the
masterbranch and wait potential review & change requests0.kind: ZHF Fixeslabel, so people can better browse these fixesstagingto avoid compute churn for users onmaster.Backporting
After 2023-11-20
Apply the relevant backport label to land the fix in the release branch
masterget backported intorelease-23.11stagingget backported intostaging-23.11If the backport action fails, follow the manual backporting steps. Make sure to use
git cherry-pick -x <rev>on all commits intended for backport.Always link back to this issue by mentioning the issue number in the description of your pull request:
If your PR receives no reviews or does not get merged, feel free to
0.kind: ZHF Fixeslabel, so people can better browse these fixesBroken packages
Everything we cannot fix in time will need to be marked broken on the respective platforms, so that Hydra will not retry builds over and over, thereby wasting compute resources.
Set
meta.brokenand add a reference and/or explanation, like this:Orphaned packages
You can read about failing packages without a maintainer here: https://zh.fail/failed/by-maintainer/_.html (orphaned packages).
If you're new to NixOS, adopting an orphaned package is a great way to get involved and contribute to the community. By doing so, you'll not only help improve the overall quality of the NixOS ecosystem, but you'll also gain valuable experience working with Nix, the language and tool that powers the package management system.
By adopting an orphaned package, you'll be taking on a responsibility that can be both challenging and rewarding. You'll need to understand the package's code and dependencies, make sure it builds and works correctly, and respond to any issues or pull requests that come up. This process can be a great learning experience, as you'll be exposed to a wide variety of programming languages and libraries.
Moreover, by adopting an orphaned package, you'll be making a tangible impact on the NixOS community. Your contributions will be greatly appreciated by users who depend on that package, and you'll be helping to ensure that NixOS releases are as stable and up-to-date as possible.
Closing
This is a great way to help NixOS, and it is a great time for new contributors to start their nixpkgs adventure. 🥳
As with the feature freeze issue, please keep the discussion here to a minimum so we don't ping all maintainers (although relevant comments can of course be added here if they are directly ZHF-related) and ping one of the release managers (@figsoda, @RaitoBezarius) in the respective issues.
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