nixos/etc: add release-note about overlay

nikstur 7763ea21 dbd8cb9d

Changed files
+3
nixos
doc
manual
release-notes
+3
nixos/doc/manual/release-notes/rl-2405.section.md
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- A new option `systemd.sysusers.enable` was added. If enabled, users and
groups are created with systemd-sysusers instead of with a custom perl script.
## New Services {#sec-release-24.05-new-services}
<!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. -->
···
- A new option `systemd.sysusers.enable` was added. If enabled, users and
groups are created with systemd-sysusers instead of with a custom perl script.
+
- A new option `system.etc.overlay.enable` was added. If enabled, `/etc` is
+
mounted via an overlayfs instead of being created by a custom perl script.
+
## New Services {#sec-release-24.05-new-services}
<!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. -->