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nixpkgs manual: more strict commit policy (close #11609)

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aszlig 2015-12-18 14:50:47 +01:00 committed by Vladimír Čunát
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doc/submitting-changes.xml
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@ -261,23 +261,72 @@ Additional information.
<para>Hydra builds for master and staging should not be used as testing platform, it's a build farm for changes that have been already tested.</para>
</listitem>
<listitem>
<para>Master should only see non-breaking commits that do not cause mass rebuilds.</para>
</listitem>
<listitem>
<para>Staging should only see non-breaking mass-rebuild commits. That means it's not to be used for testing, and changes must have been well tested already. <link xlink:href="http://comments.gmane.org/gmane.linux.distributions.nixos/13447">Read policy here</link>.</para>
</listitem>
<listitem>
<para>If staging is already in a broken state, please refrain from adding extra new breakages. Stabilize it for a few days, merge into master, then resume development on staging. <link xlink:href="http://hydra.nixos.org/jobset/nixpkgs/staging#tabs-evaluations">Keep an eye on the staging evaluations here</link>. If any fixes for staging happen to be already in master, then master can be merged into staging.</para>
</listitem>
<listitem>
<para>When changing the bootloader installation process, extra care must be taken. Grub installations cannot be rolled back, hence changes may break people's installations forever. For any non-trivial change to the bootloader please file a PR asking for review, especially from @edolstra.</para>
</listitem>
</itemizedlist>
<section>
<title>Master branch</title>
<itemizedlist>
<listitem>
<para>
It should only see non-breaking commits that do not cause mass rebuilds.
</para>
</listitem>
</itemizedlist>
</section>
<section>
<title>Staging branch</title>
<itemizedlist>
<listitem>
<para>
It's only for non-breaking mass-rebuild commits. That means it's not to
be used for testing, and changes must have been well tested already.
<link xlink:href="http://comments.gmane.org/gmane.linux.distributions.nixos/13447">Read policy here</link>.
</para>
</listitem>
<listitem>
<para>
If the branch is already in a broken state, please refrain from adding
extra new breakages. Stabilize it for a few days, merge into master,
then resume development on staging.
<link xlink:href="http://hydra.nixos.org/jobset/nixpkgs/staging#tabs-evaluations">Keep an eye on the staging evaluations here</link>.
If any fixes for staging happen to be already in master, then master can
be merged into staging.
</para>
</listitem>
</itemizedlist>
</section>
<section>
<title>Stable release branches</title>
<itemizedlist>
<listitem>
<para>
If you're cherry-picking a commit to a stable release branch, always use
<command>git cherry-pick -xe</command> and ensure the message contains a
clear description about why this needs to be included in the stable
branch.
</para>
<para>An example of a cherry-picked commit would look like this:</para>
<screen>
nixos: Refactor the world.
The original commit message describing the reason why the world was torn apart.
(cherry picked from commit abcdef)
Reason: I just had a gut feeling that this would also be wanted by people from
the stone age.
</screen>
</listitem>
</itemizedlist>
</section>
</section>
</chapter>