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-rw-r--r--nixos/doc/manual/from_md/release-notes/rl-2111.section.xml11
-rw-r--r--nixos/doc/manual/release-notes/rl-2111.section.md4
2 files changed, 15 insertions, 0 deletions
diff --git a/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml b/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
index 22c31fb23f0d..5554927b8b2a 100644
--- a/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
+++ b/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
@@ -37,6 +37,17 @@
PostgreSQL now defaults to major version 13.
</para>
</listitem>
+ <listitem>
+ <para>
+ Activation scripts can now opt int to be run when running
+ <literal>nixos-rebuild dry-activate</literal> and detect the
+ dry activation by reading <literal>$NIXOS_ACTION</literal>.
+ This allows activation scripts to output what they would
+ change if the activation was really run. The users/modules
+ activation script supports this and outputs some of is
+ actions.
+ </para>
+ </listitem>
</itemizedlist>
</section>
<section xml:id="sec-release-21.11-new-services">
diff --git a/nixos/doc/manual/release-notes/rl-2111.section.md b/nixos/doc/manual/release-notes/rl-2111.section.md
index 9e9ed4dad97b..00844d529b77 100644
--- a/nixos/doc/manual/release-notes/rl-2111.section.md
+++ b/nixos/doc/manual/release-notes/rl-2111.section.md
@@ -14,6 +14,10 @@ In addition to numerous new and upgraded packages, this release has the followin
- PostgreSQL now defaults to major version 13.
+- Activation scripts can now opt int to be run when running `nixos-rebuild dry-activate` and detect the dry activation by reading `$NIXOS_ACTION`.
+ This allows activation scripts to output what they would change if the activation was really run.
+ The users/modules activation script supports this and outputs some of is actions.
+
## New Services {#sec-release-21.11-new-services}
- [btrbk](https://digint.ch/btrbk/index.html), a backup tool for btrfs subvolumes, taking advantage of btrfs specific capabilities to create atomic snapshots and transfer them incrementally to your backup locations. Available as [services.btrbk](options.html#opt-services.brtbk.instances).