chore: remove incorrect maintainers/*.md documentation
Fate has something different in store for the release process,
backporting process and the general maintainer documentation.
See #260.
Change-Id: I626686ff4059aee22a3ab1664b52581b2dbf6ed7
Signed-off-by: Raito Bezarius <raito@lix.systems>
This commit is contained in:
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# Nix maintainers team
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## Motivation
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The team's main responsibility is to set a direction for the development of Nix and ensure that the code is in good shape.
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We aim to achieve this by improving the contributor experience and attracting more maintainers – that is, by helping other people contributing to Nix and eventually taking responsibility – in order to scale the development process to match users' needs.
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### Objectives
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- It is obvious what is worthwhile to work on.
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- It is easy to find the right place in the code to make a change.
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- It is clear what is expected of a pull request.
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- It is predictable how to get a change merged and released.
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### Tasks
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- Establish, communicate, and maintain a technical roadmap
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- Improve documentation targeted at contributors
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- Record architecture and design decisions
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- Elaborate contribution guides and abide to them
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- Define and assert quality criteria for contributions
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- Maintain the issue tracker and triage pull requests
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- Help contributors succeed with pull requests that address roadmap milestones
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- Manage the release lifecycle
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- Regularly publish reports on work done
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- Engage with third parties in the interest of the project
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- Ensure the required maintainer capacity for all of the above
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## Members
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- Eelco Dolstra (@edolstra) – Team lead
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- Théophane Hufschmitt (@thufschmitt)
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- Valentin Gagarin (@fricklerhandwerk)
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- Thomas Bereknyei (@tomberek)
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- Robert Hensing (@roberth)
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- John Ericson (@Ericson2314)
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## Meeting protocol
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The team meets twice a week:
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- Discussion meeting: [Fridays 13:00-14:00 CET](https://calendar.google.com/calendar/event?eid=MHNtOGVuNWtrZXNpZHR2bW1sM3QyN2ZjaGNfMjAyMjExMjVUMTIwMDAwWiBiOW81MmZvYnFqYWs4b3E4bGZraGczdDBxZ0Bn)
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1. Triage issues and pull requests from the [No Status](#no-status) column (30 min)
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2. Discuss issues and pull requests from the [To discuss](#to-discuss) column (30 min)
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- Work meeting: [Mondays 13:00-15:00 CET](https://calendar.google.com/calendar/event?eid=NTM1MG1wNGJnOGpmOTZhYms3bTB1bnY5cWxfMjAyMjExMjFUMTIwMDAwWiBiOW81MmZvYnFqYWs4b3E4bGZraGczdDBxZ0Bn)
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1. Code review on pull requests from [In review](#in-review).
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2. Other chores and tasks.
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Meeting notes are collected on a [collaborative scratchpad](https://pad.lassul.us/Cv7FpYx-Ri-4VjUykQOLAw), and published on Discourse under the [Nix category](https://discourse.nixos.org/c/dev/nix/50).
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## Project board protocol
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The team uses a [GitHub project board](https://github.com/orgs/NixOS/projects/19/views/1) for tracking its work.
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Items on the board progress through the following states:
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### No Status
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During the discussion meeting, the team triages new items.
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To be considered, issues and pull requests must have a high-level description to provide the whole team with the necessary context at a glance.
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On every meeting, at least one item from each of the following categories is inspected:
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1. [critical](https://github.com/NixOS/nix/labels/critical)
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2. [security](https://github.com/NixOS/nix/labels/security)
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3. [regression](https://github.com/NixOS/nix/labels/regression)
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4. [bug](https://github.com/NixOS/nix/issues?q=is%3Aopen+label%3Abug+sort%3Areactions-%2B1-desc)
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5. [tests of existing functionality](https://github.com/NixOS/nix/issues?q=is%3Aopen+label%3Atests+-label%3Afeature+sort%3Areactions-%2B1-desc)
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- [oldest pull requests](https://github.com/NixOS/nix/pulls?q=is%3Apr+is%3Aopen+sort%3Acreated-asc)
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- [most popular pull requests](https://github.com/NixOS/nix/pulls?q=is%3Apr+is%3Aopen+sort%3Areactions-%2B1-desc)
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- [oldest issues](https://github.com/NixOS/nix/issues?q=is%3Aissue+is%3Aopen+sort%3Acreated-asc)
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- [most popular issues](https://github.com/NixOS/nix/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc)
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Team members can also add pull requests or issues they would like the whole team to consider.
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To ensure process quality and reliability, all non-trivial pull requests must be triaged before merging.
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If there is disagreement on the general idea behind an issue or pull request, it is moved to [To discuss](#to-discuss).
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Otherwise, the issue or pull request in questions get the label [`idea approved`](https://github.com/NixOS/nix/labels/idea%20approved).
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For issues this means that an implementation is welcome and will be prioritised for review.
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For pull requests this means that:
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- Unfinished work is encouraged to be continued.
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- A reviewer is assigned to take responsibility for getting the pull request merged.
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The item is moved to the [Assigned](#assigned) column.
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- If needed, the team can decide to do a collarorative review.
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Then the item is moved to the [In review](#in-review) column, and review session is scheduled.
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What constitutes a trivial pull request is up to maintainers' judgement.
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### To discuss
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Pull requests and issues that are deemed important and controversial are discussed by the team during discussion meetings.
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This may be where the merit of the change itself or the implementation strategy is contested by a team member.
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As a general guideline, the order of items is determined as follows:
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- Prioritise pull requests over issues
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Contributors who took the time to implement concrete change proposals should not wait indefinitely.
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- Prioritise fixing bugs and testing over documentation, improvements or new features
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The team values stability and accessibility higher than raw functionality.
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- Interleave issues and PRs
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This way issues without attempts at a solution get a chance to get addressed.
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### In review
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Pull requests in this column are reviewed together during work meetings.
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This is both for spreading implementation knowledge and for establishing common values in code reviews.
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When the overall direction is agreed upon, even when further changes are required, the pull request is assigned to one team member.
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If significant changes are requested or reviewers cannot come to a conclusion in reasonable time, the pull request is [marked as draft](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-stage-of-a-pull-request#converting-a-pull-request-to-a-draft).
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### Assigned
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One team member is assigned to each of these pull requests.
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They will communicate with the authors, and make the final approval once all remaining issues are addressed.
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If more substantive issues arise, the assignee can move the pull request back to [To discuss](#to-discuss) or [In review](#in-review) to involve the team again.
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### Flowchart
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The process is illustrated in the following diagram:
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```mermaid
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flowchart TD
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discuss[To discuss]
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review[To review]
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New --> |Disagreement on idea| discuss
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New & discuss --> |Consensus on idea| review
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review --> |Consensus on implementation| Assigned
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Assigned --> |Implementation issues arise| review
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Assigned --> |Remaining issues fixed| Merged
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```
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@ -1,12 +0,0 @@
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# Backporting
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To [automatically backport a pull request](https://github.com/NixOS/nix/blob/master/.github/workflows/backport.yml) to a release branch once it's merged, assign it a label of the form [`backport <branch>`](https://github.com/NixOS/nix/labels?q=backport).
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Since [GitHub Actions workflows will not trigger other workflows](https://docs.github.com/en/actions/using-workflows/triggering-a-workflow#triggering-a-workflow-from-a-workflow), checks on the automatic backport need to be triggered by another actor.
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This is achieved by closing and reopening the backport pull request.
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This specifically affects the [`installer_test`] check.
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Note that it only runs after the other tests, so it may take a while to appear.
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[`installer_test`]: https://github.com/NixOS/nix/blob/895dfc656a21f6252ddf48df0d1f215effa04ecb/.github/workflows/ci.yml#L70-L91
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# Nix release process
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## Release artifacts
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The release process is intended to create the following for each
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release:
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* A Git tag
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* Binary tarballs in https://releases.nixos.org/?prefix=nix/
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* Docker images
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* Closures in https://cache.nixos.org
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* (Optionally) Updated `fallback-paths.nix` in Nixpkgs
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* An updated manual on https://nixos.org/manual/nix/stable/
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## Creating a new release from the `master` branch
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* Make sure that the [Hydra `master` jobset](https://hydra.nixos.org/jobset/nix/master) succeeds.
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* In a checkout of the Nix repo, make sure you're on `master` and run
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`git pull`.
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* Compile the release notes by running
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```console
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$ git checkout -b release-notes
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$ VERSION=X.YY ./maintainers/release-notes
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```
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where `X.YY` is *without* the patch level, e.g. `2.12` rather than ~~`2.12.0`~~.
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A commit is created.
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* Proof-read / edit / rearrange the release notes if needed. Breaking changes
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and highlights should go to the top.
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* Push.
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```console
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$ git push --set-upstream $REMOTE release-notes
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```
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* Create a PR for `release-notes`.
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* Wait for the PR to be merged.
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* Create a branch for the release:
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```console
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$ git checkout master
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$ git pull
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$ git checkout -b $VERSION-maintenance
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```
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* Mark the release as official:
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```console
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$ sed -e 's/officialRelease = false;/officialRelease = true;/' -i flake.nix
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$ sed -e '/rl-next.md/ d' -i doc/manual/src/SUMMARY.md
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```
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This removes the link to `rl-next.md` from the manual and sets
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`officialRelease = true` in `flake.nix`.
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* Commit
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* Push the release branch:
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```console
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$ git push --set-upstream origin $VERSION-maintenance
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```
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* Create a jobset for the release branch on Hydra as follows:
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* Go to the jobset of the previous release
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(e.g. https://hydra.nixos.org/jobset/nix/maintenance-2.11).
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* Select `Actions -> Clone this jobset`.
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* Set identifier to `maintenance-$VERSION`.
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* Set description to `$VERSION release branch`.
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* Set flake URL to `github:NixOS/nix/$VERSION-maintenance`.
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* Hit `Create jobset`.
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* Wait for the new jobset to evaluate and build. If impatient, go to
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the evaluation and select `Actions -> Bump builds to front of
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queue`.
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* When the jobset evaluation has succeeded building, take note of the
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evaluation ID (e.g. `1780832` in
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`https://hydra.nixos.org/eval/1780832`).
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* Tag the release and upload the release artifacts to
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[`releases.nixos.org`](https://releases.nixos.org/) and [Docker Hub](https://hub.docker.com/):
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```console
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$ IS_LATEST=1 ./maintainers/upload-release.pl <EVAL-ID>
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```
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Note: `IS_LATEST=1` causes the `latest-release` branch to be
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force-updated. This is used by the `nixos.org` website to get the
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[latest Nix manual](https://nixos.org/manual/nixpkgs/unstable/).
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TODO: This script requires the right AWS credentials. Document.
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TODO: This script currently requires a
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`/home/eelco/Dev/nix-pristine`.
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TODO: trigger nixos.org netlify: https://docs.netlify.com/configure-builds/build-hooks/
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* Prepare for the next point release by editing `.version` to
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e.g.
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```console
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$ echo 2.12.1 > .version
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$ git commit -a -m 'Bump version'
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$ git push
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```
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Commit and push this to the maintenance branch.
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* Bump the version of `master`:
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```console
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$ git checkout master
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$ git pull
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$ NEW_VERSION=2.13.0
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$ echo $NEW_VERSION > .version
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$ git checkout -b bump-$NEW_VERSION
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$ git commit -a -m 'Bump version'
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$ git push --set-upstream origin bump-$NEW_VERSION
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```
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Make a pull request and auto-merge it.
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* Create a milestone for the next release, move all unresolved issues
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from the previous milestone, and close the previous milestone. Set
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the date for the next milestone 6 weeks from now.
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* Create a backport label.
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* Post an [announcement on Discourse](https://discourse.nixos.org/c/announcements/8), including the contents of
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`rl-$VERSION.md`.
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## Creating a point release
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* Checkout.
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```console
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$ git checkout XX.YY-maintenance
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```
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* Determine the next patch version.
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```console
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$ export VERSION=XX.YY.ZZ
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```
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* Update release notes.
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```console
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$ ./maintainers/release-notes
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```
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* Push.
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```console
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$ git push
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```
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* Wait for the desired evaluation of the maintenance jobset to finish
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building.
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* Run
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```console
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$ IS_LATEST=1 ./maintainers/upload-release.pl <EVAL-ID>
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```
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Omit `IS_LATEST=1` when creating a point release that is not on the
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most recent stable branch. This prevents `nixos.org` to going back
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to an older release.
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* Bump the version number of the release branch as above (e.g. to
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`2.12.2`).
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## Recovering from mistakes
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`upload-release.pl` should be idempotent. For instance a wrong `IS_LATEST` value can be fixed that way, by running the script on the actual latest release.
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