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# Nixpkgs Maintainers
Unlike other packaging ecosystems, the maintainer doesn't have exclusive
control over the packages and modules they maintain. This more fluid approach
is one reason why we scale to so many packages.
## Definition and role of the maintainer
The main responsibility of a maintainer is to keep the packages they maintain
in a functioning state, and keep up with updates. In order to do that, they
are empowered to make decisions over the packages they maintain.
That being said, the maintainer is not alone proposing changes to the
packages. Anybody (both bots and humans) can send PRs to bump or tweak the
package.
We also allow other non-maintainer committers to merge changes to the package,
provided enough time and priority has been given to the maintainer.
For most packages, we expect committers to wait at least a week before merging
changes not endorsed by a package maintainer (which may be themselves). This should leave enough time
for the maintainers to provide feedback.
For critical packages, this convention needs to be negotiated with the
maintainer. A critical package is one that causes mass-rebuild, or where an
author is listed in the [`CODEOWNERS`](../.github/CODEOWNERS) file.
In case of critical security updates, the [security team](https://nixos.org/community/teams/security) might override these
heuristics in order to get the fixes in as fast as possible.
In case of conflict, the maintainer takes priority and is allowed to revert
the changes. This can happen for example if the maintainer was on holiday.
### How to become a maintainer
We encourage people who care about a package to assign themselves as a
maintainer. Commit access to the Nixpkgs repository is not required for that.
In order to do so, add yourself to the
[`maintainer-list.nix`](./maintainer-list.nix), and then to the desired
package's `meta.maintainers` list, and send a PR with the changes.
### How to lose maintainer status
Maintainers who have become inactive on a given package can be removed. This
helps us keep an accurate view of the state of maintenance in Nixpkgs.
The inactivity measure is currently not strictly enforced. We would typically
look at it if we notice that the author hasn't reacted to package-related
notifications for more than 3 months.
Removing the maintainer happens by making a PR on the package, adding that
person as a reviewer, and then waiting a week for a reaction.
The maintainer is welcome to come back at any time.
### Tools for maintainers
When a pull request is made against a package, OfBorg will notify the
appropriate maintainer(s).
## Reviewing contributions
### Individual maintainer list
When adding users to [`maintainer-list.nix`](./maintainer-list.nix), the following
checks should be performed:
- If the user has specified a GPG key, verify that the commit is
signed by their key.
First, validate that the commit adding the maintainer is signed by
the key the maintainer listed. Check out the pull request and
compare its signing key with the listed key in the commit.
If the commit is not signed or it is signed by a different user, ask
them to either recommit using that key or to remove their key
information.
Given a maintainer entry like this:
``` nix
{
example = {
email = "user@example.com";
name = "Example User";
keys = [{
fingerprint = "0000 0000 2A70 6423 0AED 3C11 F04F 7A19 AAA6 3AFE";
}];
}
};
```
First receive their key from a keyserver:
$ gpg --recv-keys 0xF04F7A19AAA63AFE
gpg: key 0xF04F7A19AAA63AFE: public key "Example <user@example.com>" imported
gpg: Total number processed: 1
gpg: imported: 1
Then check the commit is signed by that key:
$ git log --show-signature
commit b87862a4f7d32319b1de428adb6cdbdd3a960153
gpg: Signature made Wed Mar 12 13:32:24 2003 +0000
gpg: using RSA key 000000002A7064230AED3C11F04F7A19AAA63AFE
gpg: Good signature from "Example User <user@example.com>
Author: Example User <user@example.com>
Date: Wed Mar 12 13:32:24 2003 +0000
maintainers: adding example
and validate that there is a `Good signature` and the printed key
matches the user's submitted key.
Note: GitHub's "Verified" label does not display the user's full key
fingerprint, and should not be used for validating the key matches.
- If the user has specified a `github` account name, ensure they have
also specified a `githubId` and verify the two match.
Maintainer entries that include a `github` field must also include
their `githubId`. People can and do change their GitHub name
frequently, and the ID is used as the official and stable identity
of the maintainer.
Given a maintainer entry like this:
``` nix
{
example = {
email = "user@example.com";
name = "Example User";
github = "ghost";
githubId = 10137;
}
};
```
First, make sure that the listed GitHub handle matches the author of
the commit.
Then, visit the URL `https://api.github.com/users/ghost` and
validate that the `id` field matches the provided `githubId`.
### Maintainer teams
Feel free to create a new maintainer team in [`team-list.nix`](./team-list.nix)
when a group is collectively responsible for a collection of packages.
Use taste and personal judgement when deciding if a team is warranted.
Teams are allowed to define their own rules about membership.
For example, some teams will represent a business or other group which
wants to carefully track its members. Other teams may be very open about
who can join, and allow anybody to participate.
When reviewing changes to a team, read the team's scope and the context
around the member list for indications about the team's membership
policy.
In any case, request reviews from the existing team members. If the team
lists no specific membership policy, feel free to merge changes to the
team after giving the existing members a few days to respond.
*Important:* If a team says it is a closed group, do not merge additions
to the team without an approval by at least one existing member.
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