nixos/nginx: disable automatic advertise of HTTP/3 protocol support

Automatic advertise in the `http` block about support of HTTP/3
protocol makes it difficult to automatically configure services
to work with it.
HTTP/3 availability must be manually advertised, preferably in
each location block.

1 files changed, 12 insertions, 0 deletions

diff --git a/nixos/doc/manual/release-notes/rl-2405.section.md b/nixos/doc/manual/release-notes/rl-2405.section.md
index b347992031d9..cec9bbe2d99c 100644
--- a/nixos/doc/manual/release-notes/rl-2405.section.md
+++ b/nixos/doc/manual/release-notes/rl-2405.section.md
@@ -59,6 +59,18 @@ The pre-existing [services.ankisyncd](#opt-services.ankisyncd.enable) has been m
 - `mkosi` was updated to v19. Parts of the user interface have changed. Consult the
   [release notes](https://github.com/systemd/mkosi/releases/tag/v19) for a list of changes.
 
+- `services.nginx` will no longer advertise HTTP/3 availability automatically. This must now be manually added, preferably to each location block.
+  Example:
+
+  ```nix
+    locations."/".extraConfig = ''
+      add_header Alt-Svc 'h3=":$server_port"; ma=86400';
+    '';
+    locations."^~ /assets/".extraConfig = ''
+      add_header Alt-Svc 'h3=":$server_port"; ma=86400';
+    '';
+
+  ```
 - The `kanata` package has been updated to v1.5.0, which includes [breaking changes](https://github.com/jtroo/kanata/releases/tag/v1.5.0).
 
 - The latest available version of Nextcloud is v28 (available as `pkgs.nextcloud28`). The installation logic is as follows: