forked from mirrors/nixpkgs
616 lines
17 KiB
XML
616 lines
17 KiB
XML
<chapter xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-reviewing-contributions">
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<title>Reviewing contributions</title>
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<warning>
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<para>
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The following section is a draft, and the policy for reviewing is still being
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discussed in issues such as <link
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xlink:href="https://github.com/NixOS/nixpkgs/issues/11166">#11166
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</link> and <link
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xlink:href="https://github.com/NixOS/nixpkgs/issues/20836">#20836
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</link>.
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</para>
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</warning>
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<para>
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The nixpkgs project receives a fairly high number of contributions via
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GitHub pull-requests. Reviewing and approving these is an important task and
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a way to contribute to the project.
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</para>
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<para>
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The high change rate of nixpkgs makes any pull request that remains open for
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too long subject to conflicts that will require extra work from the submitter
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or the merger. Reviewing pull requests in a timely manner and being
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responsive to the comments is the key to avoid these. GitHub provides sort
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filters that can be used to see the
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<link
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xlink:href="https://github.com/NixOS/nixpkgs/pulls?q=is%3Apr+is%3Aopen+sort%3Aupdated-desc">most
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recently</link> and the
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<link
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xlink:href="https://github.com/NixOS/nixpkgs/pulls?q=is%3Apr+is%3Aopen+sort%3Aupdated-asc">least
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recently</link> updated pull-requests. We highly encourage looking at
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<link xlink:href="https://github.com/NixOS/nixpkgs/pulls?q=is%3Apr+is%3Aopen+review%3Anone+status%3Asuccess+-label%3A%222.status%3A+work-in-progress%22+no%3Aproject+no%3Aassignee+no%3Amilestone">
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this list of ready to merge, unreviewed pull requests</link>.
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</para>
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<para>
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When reviewing a pull request, please always be nice and polite.
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Controversial changes can lead to controversial opinions, but it is important
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to respect every community member and their work.
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</para>
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<para>
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GitHub provides reactions as a simple and quick way to provide
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feedback to pull-requests or any comments. The thumb-down reaction should be
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used with care and if possible accompanied with some explanation so the
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submitter has directions to improve their contribution.
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</para>
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<para>
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Pull-request reviews should include a list of what has been reviewed in a
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comment, so other reviewers and mergers can know the state of the review.
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</para>
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<para>
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All the review template samples provided in this section are generic and
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meant as examples. Their usage is optional and the reviewer is free to adapt
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them to their liking.
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</para>
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<section>
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<title>Package updates</title>
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<para>
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A package update is the most trivial and common type of pull-request. These
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pull-requests mainly consist of updating the version part of the package
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name and the source hash.
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</para>
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<para>
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It can happen that non-trivial updates include patches or more complex
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changes.
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</para>
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<para>
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Reviewing process:
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Add labels to the pull-request. (Requires commit rights)
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</para>
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<itemizedlist>
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<listitem>
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<para>
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<literal>8.has: package (update)</literal> and any topic label that fit
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the updated package.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Ensure that the package versioning fits the guidelines.
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</para>
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</listitem>
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<listitem>
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<para>
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Ensure that the commit text fits the guidelines.
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</para>
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</listitem>
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<listitem>
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<para>
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Ensure that the package maintainers are notified.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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<link xlink:href="https://help.github.com/articles/about-codeowners/">CODEOWNERS</link>
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will make GitHub notify users based on the submitted changes, but it can
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happen that it misses some of the package maintainers.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Ensure that the meta field information is correct.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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License can change with version updates, so it should be checked to match
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the upstream license.
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</para>
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</listitem>
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<listitem>
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<para>
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If the package has no maintainer, a maintainer must be set. This can be
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the update submitter or a community member that accepts to take
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maintainership of the package.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Ensure that the code contains no typos.
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</para>
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</listitem>
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<listitem>
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<para>
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Building the package locally.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Pull-requests are often targeted to the master or staging branch, and
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building the pull-request locally when it is submitted can trigger
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many source builds.
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</para>
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<para>
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It is possible to rebase the changes on nixos-unstable or
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nixpkgs-unstable for easier review by running the following commands
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from a nixpkgs clone.
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<screen>
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$ git remote add channels https://github.com/NixOS/nixpkgs-channels.git <co
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xml:id='reviewing-rebase-1' />
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$ git fetch channels nixos-unstable <co xml:id='reviewing-rebase-2' />
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$ git fetch origin pull/PRNUMBER/head <co xml:id='reviewing-rebase-3' />
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$ git rebase --onto nixos-unstable BASEBRANCH FETCH_HEAD <co
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xml:id='reviewing-rebase-4' />
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</screen>
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<calloutlist>
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<callout arearefs='reviewing-rebase-1'>
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<para>
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This should be done only once to be able to fetch channel branches
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from the nixpkgs-channels repository.
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</para>
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</callout>
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<callout arearefs='reviewing-rebase-2'>
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<para>
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Fetching the nixos-unstable branch.
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</para>
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</callout>
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<callout arearefs='reviewing-rebase-3'>
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<para>
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Fetching the pull-request changes, <varname>PRNUMBER</varname> is the
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number at the end of the pull-request title and
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<varname>BASEBRANCH</varname> the base branch of the pull-request.
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</para>
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</callout>
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<callout arearefs='reviewing-rebase-4'>
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<para>
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Rebasing the pull-request changes to the nixos-unstable branch.
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</para>
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</callout>
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</calloutlist>
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</para>
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</listitem>
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<listitem>
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<para>
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The <link xlink:href="https://github.com/madjar/nox">nox</link> tool can
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be used to review a pull-request content in a single command. It doesn't
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rebase on a channel branch so it might trigger multiple source builds.
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<varname>PRNUMBER</varname> should be replaced by the number at the end
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of the pull-request title.
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</para>
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<screen>
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$ nix-shell -p nox --run "nox-review -k pr PRNUMBER"
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</screen>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Running every binary.
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</para>
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</listitem>
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</itemizedlist>
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<example>
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<title>Sample template for a package update review</title>
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<screen>
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##### Reviewed points
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- [ ] package name fits guidelines
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- [ ] package version fits guidelines
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- [ ] package build on ARCHITECTURE
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- [ ] executables tested on ARCHITECTURE
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- [ ] all depending packages build
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##### Possible improvements
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##### Comments
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</screen>
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</example>
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</section>
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<section>
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<title>New packages</title>
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<para>
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New packages are a common type of pull-requests. These pull requests
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consists in adding a new nix-expression for a package.
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</para>
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<para>
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Reviewing process:
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Add labels to the pull-request. (Requires commit rights)
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</para>
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<itemizedlist>
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<listitem>
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<para>
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<literal>8.has: package (new)</literal> and any topic label that fit the
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new package.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Ensure that the package versioning is fitting the guidelines.
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</para>
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</listitem>
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<listitem>
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<para>
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Ensure that the commit name is fitting the guidelines.
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</para>
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</listitem>
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<listitem>
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<para>
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Ensure that the meta field contains correct information.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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License must be checked to be fitting upstream license.
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</para>
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</listitem>
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<listitem>
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<para>
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Platforms should be set or the package will not get binary substitutes.
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</para>
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</listitem>
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<listitem>
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<para>
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A maintainer must be set, this can be the package submitter or a
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community member that accepts to take maintainership of the package.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Ensure that the code contains no typos.
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</para>
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</listitem>
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<listitem>
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<para>
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Ensure the package source.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Mirrors urls should be used when available.
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</para>
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</listitem>
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<listitem>
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<para>
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The most appropriate function should be used (e.g. packages from GitHub
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should use <literal>fetchFromGitHub</literal>).
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Building the package locally.
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</para>
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</listitem>
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<listitem>
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<para>
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Running every binary.
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</para>
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</listitem>
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</itemizedlist>
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<example>
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<title>Sample template for a new package review</title>
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<screen>
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##### Reviewed points
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- [ ] package path fits guidelines
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- [ ] package name fits guidelines
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- [ ] package version fits guidelines
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- [ ] package build on ARCHITECTURE
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- [ ] executables tested on ARCHITECTURE
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- [ ] `meta.description` is set and fits guidelines
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- [ ] `meta.license` fits upstream license
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- [ ] `meta.platforms` is set
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- [ ] `meta.maintainers` is set
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- [ ] build time only dependencies are declared in `nativeBuildInputs`
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- [ ] source is fetched using the appropriate function
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- [ ] phases are respected
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- [ ] patches that are remotely available are fetched with `fetchpatch`
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##### Possible improvements
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##### Comments
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</screen>
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</example>
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</section>
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<section>
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<title>Module updates</title>
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<para>
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Module updates are submissions changing modules in some ways. These often
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contains changes to the options or introduce new options.
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</para>
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<para>
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Reviewing process
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Add labels to the pull-request. (Requires commit rights)
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</para>
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<itemizedlist>
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<listitem>
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<para>
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<literal>8.has: module (update)</literal> and any topic label that fit
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the module.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Ensure that the module maintainers are notified.
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</para>
|
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<itemizedlist>
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<listitem>
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<para>
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<link xlink:href="https://help.github.com/articles/about-codeowners/">CODEOWNERS</link>
|
|
will make GitHub notify users based on the submitted changes, but it can
|
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happen that it misses some of the package maintainers.
|
|
</para>
|
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</listitem>
|
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</itemizedlist>
|
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</listitem>
|
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<listitem>
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<para>
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Ensure that the module tests, if any, are succeeding.
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</para>
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</listitem>
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<listitem>
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<para>
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Ensure that the introduced options are correct.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Type should be appropriate (string related types differs in their
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merging capabilities, <literal>optionSet</literal> and
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<literal>string</literal> types are deprecated).
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</para>
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</listitem>
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<listitem>
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<para>
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Description, default and example should be provided.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Ensure that option changes are backward compatible.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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<literal>mkRenamedOptionModule</literal> and
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<literal>mkAliasOptionModule</literal> functions provide way to make
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option changes backward compatible.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Ensure that removed options are declared with
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<literal>mkRemovedOptionModule</literal>
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</para>
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</listitem>
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<listitem>
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<para>
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Ensure that changes that are not backward compatible are mentioned in
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release notes.
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</para>
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</listitem>
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<listitem>
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<para>
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Ensure that documentations affected by the change is updated.
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</para>
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</listitem>
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</itemizedlist>
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|
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<example>
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<title>Sample template for a module update review</title>
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<screen>
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##### Reviewed points
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- [ ] changes are backward compatible
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- [ ] removed options are declared with `mkRemovedOptionModule`
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- [ ] changes that are not backward compatible are documented in release notes
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- [ ] module tests succeed on ARCHITECTURE
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- [ ] options types are appropriate
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- [ ] options description is set
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- [ ] options example is provided
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- [ ] documentation affected by the changes is updated
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##### Possible improvements
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##### Comments
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</screen>
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</example>
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</section>
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<section>
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<title>New modules</title>
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<para>
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New modules submissions introduce a new module to NixOS.
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</para>
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|
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<itemizedlist>
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<listitem>
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<para>
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Add labels to the pull-request. (Requires commit rights)
|
|
</para>
|
|
<itemizedlist>
|
|
<listitem>
|
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<para>
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|
<literal>8.has: module (new)</literal> and any topic label that fit the
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module.
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</para>
|
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</listitem>
|
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</itemizedlist>
|
|
</listitem>
|
|
<listitem>
|
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<para>
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Ensure that the module tests, if any, are succeeding.
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</para>
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</listitem>
|
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<listitem>
|
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<para>
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Ensure that the introduced options are correct.
|
|
</para>
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para>
|
|
Type should be appropriate (string related types differs in their
|
|
merging capabilities, <literal>optionSet</literal> and
|
|
<literal>string</literal> types are deprecated).
|
|
</para>
|
|
</listitem>
|
|
<listitem>
|
|
<para>
|
|
Description, default and example should be provided.
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|
</para>
|
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</listitem>
|
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</itemizedlist>
|
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</listitem>
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<listitem>
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<para>
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Ensure that module <literal>meta</literal> field is present
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Maintainers should be declared in <literal>meta.maintainers</literal>.
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</para>
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</listitem>
|
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<listitem>
|
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<para>
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Module documentation should be declared with
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<literal>meta.doc</literal>.
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</para>
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</listitem>
|
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Ensure that the module respect other modules functionality.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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For example, enabling a module should not open firewall ports by
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default.
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</para>
|
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</listitem>
|
|
</itemizedlist>
|
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</listitem>
|
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</itemizedlist>
|
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|
|
<example>
|
|
<title>Sample template for a new module review</title>
|
|
<screen>
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|
##### Reviewed points
|
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- [ ] module path fits the guidelines
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- [ ] module tests succeed on ARCHITECTURE
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- [ ] options have appropriate types
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- [ ] options have default
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- [ ] options have example
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- [ ] options have descriptions
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- [ ] No unneeded package is added to environment.systemPackages
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- [ ] meta.maintainers is set
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- [ ] module documentation is declared in meta.doc
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##### Possible improvements
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##### Comments
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</screen>
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|
</example>
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</section>
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<section>
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<title>Other submissions</title>
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<para>
|
|
Other type of submissions requires different reviewing steps.
|
|
</para>
|
|
|
|
<para>
|
|
If you consider having enough knowledge and experience in a topic and would
|
|
like to be a long-term reviewer for related submissions, please contact the
|
|
current reviewers for that topic. They will give you information about the
|
|
reviewing process. The main reviewers for a topic can be hard to find as
|
|
there is no list, but checking past pull-requests to see who reviewed or
|
|
git-blaming the code to see who committed to that topic can give some hints.
|
|
</para>
|
|
|
|
<para>
|
|
Container system, boot system and library changes are some examples of the
|
|
pull requests fitting this category.
|
|
</para>
|
|
</section>
|
|
<section>
|
|
<title>Merging pull-requests</title>
|
|
|
|
<para>
|
|
It is possible for community members that have enough knowledge and
|
|
experience on a special topic to contribute by merging pull requests.
|
|
</para>
|
|
|
|
<para>
|
|
TODO: add the procedure to request merging rights.
|
|
</para>
|
|
|
|
<!--
|
|
The following paragraph about how to deal with unactive contributors is just a
|
|
proposition and should be modified to what the community agrees to be the right
|
|
policy.
|
|
|
|
<para>Please note that contributors with commit rights unactive for more than
|
|
three months will have their commit rights revoked.</para>
|
|
-->
|
|
|
|
<para>
|
|
In a case a contributor leaves definitively the Nix community, he
|
|
should create an issue or post on <link
|
|
xlink:href="https://discourse.nixos.org">Discourse</link> with
|
|
references of packages and modules he maintains so the
|
|
maintainership can be taken over by other contributors.
|
|
</para>
|
|
</section>
|
|
</chapter>
|