nixos/rss-bridge: add package option

Co-authored-by: Zitrone <general@dev.quantenzitrone.eu>

nixos/doc/manual/release-notes/rl-2505.section.md

@@ -463,6 +463,8 @@
 
 - `networking.wireguard` now has an optional networkd backend. It is enabled by default when `networking.useNetworkd` is enabled, and it can be enabled alongside scripted networking with `networking.wireguard.useNetworkd`. Some `networking.wireguard` options have slightly different behavior with the networkd and script-based backends, documented in each option.
 
+- `services.rss-bridge` now has a `package` option.
+
 - `services.avahi.ipv6` now defaults to true.
 
 - The Home Assistant module has new options {option}`services.home-assistant.blueprints.automation`, `services.home-assistant.blueprints.script`, and {option}`services.home-assistant.blueprints.template` that allow for the declarative installation of [blueprints](https://www.home-assistant.io/docs/blueprint/) into the appropriate configuration directories.

nixos/modules/services/web-apps/rss-bridge.nix

@@ -11,6 +11,7 @@ let
     mkEnableOption
     mkIf
     mkOption
+    mkPackageOption
     mkRenamedOptionModule
     types
     ;
@@ -74,6 +75,8 @@ in
         '';
       };
 
+      package = mkPackageOption pkgs "rss-bridge" { };
+
       pool = mkOption {
         type = types.nullOr types.str;
         default = "rss-bridge";
@@ -173,7 +176,7 @@ in
       enable = true;
       virtualHosts = {
         ${cfg.virtualHost} = {
-          root = "${pkgs.rss-bridge}";
+          root = "${cfg.package}";
 
           locations."/" = {
             tryFiles = "$uri /index.php$is_args$args";