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# Nix maintainers team
## 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.
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
- It is obvious what is worthwhile to work on.
- It is easy to find the right place in the code to make a change.
- It is clear what is expected of a pull request.
- It is predictable how to get a change merged and released.
### Tasks
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- Establish, communicate, and maintain a technical roadmap
- Improve documentation targeted at contributors
- Record architecture and design decisions
- Elaborate contribution guides and abide to them
- 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
- Manage the release lifecycle
- Regularly publish reports on work done
- 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
- Eelco Dolstra (@edolstra) – Team lead
- Théophane Hufschmitt (@thufschmitt)
- Valentin Gagarin (@fricklerhandwerk)
- Thomas Bereknyei (@tomberek)
- Robert Hensing (@roberth)
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- John Ericson (@Ericson2314)
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## Meeting protocol
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)
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.
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 ).
## Project board protocol
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.
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 )
2. [security ](https://github.com/NixOS/nix/labels/security )
3. [regression ](https://github.com/NixOS/nix/labels/regression )
4. [bug ](https://github.com/NixOS/nix/issues?q=is%3Aopen+label%3Abug+sort%3Areactions-%2B1-desc )
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 )
- [most popular pull requests ](https://github.com/NixOS/nix/pulls?q=is%3Apr+is%3Aopen+sort%3Areactions-%2B1-desc )
- [oldest issues ](https://github.com/NixOS/nix/issues?q=is%3Aissue+is%3Aopen+sort%3Acreated-asc )
- [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.
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 ).
Otherwise, the issue or pull request in questions get the label [`idea approved` ](https://github.com/NixOS/nix/labels/idea%20approved ).
For issues this means that an implementation is welcome and will be prioritised for review.
For pull requests this means that:
- Unfinished work is encouraged to be continued.
- A reviewer is assigned to take responsibility for getting the pull request merged.
The item is moved to the [Assigned ](#assigned ) column.
- If needed, the team can decide to do a collarorative review.
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.
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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### Assigned
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One team member is assigned to each of these pull requests.
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.
### Flowchart
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The process is illustrated in the following diagram:
```mermaid
flowchart TD
discuss[To discuss]
review[To review]
New --> |Disagreement on idea| discuss
New & discuss --> |Consensus on idea| review
review --> |Consensus on implementation| Assigned
Assigned --> |Implementation issues arise| review
Assigned --> |Remaining issues fixed| Merged
```