nixos/sway: Drop rxvt-unicode from the extraPackages default

Upstream switched to Alacritty for the default configuration.

nixos/doc/manual/from_md/release-notes/rl-2111.section.xml

@@ -341,6 +341,17 @@
           attempts from the SSH logs.
         </para>
       </listitem>
+      <listitem>
+        <para>
+          Sway: The terminal emulator <literal>rxvt-unicode</literal> is
+          no longer installed by default via
+          <literal>programs.sway.extraPackages</literal>. The current
+          default configuration uses <literal>alacritty</literal> (and
+          soon <literal>foot</literal>) so this is only an issue when
+          using a customized configuration and not installing
+          <literal>rxvt-unicode</literal> explicitly.
+        </para>
+      </listitem>
     </itemizedlist>
   </section>
 </section>

nixos/doc/manual/release-notes/rl-2111.section.md

@@ -83,3 +83,5 @@ In addition to numerous new and upgraded packages, this release has the followin
 - The setting [`services.openssh.logLevel`](options.html#opt-services.openssh.logLevel) `"VERBOSE"` `"INFO"`. This brings NixOS in line with upstream and other Linux distributions, and reduces log spam on servers due to bruteforcing botnets.
 
   However, if [`services.fail2ban.enable`](options.html#opt-services.fail2ban.enable) is `true`, the `fail2ban` will override the verbosity to `"VERBOSE"`, so that `fail2ban` can observe the failed login attempts from the SSH logs.
+
+- Sway: The terminal emulator `rxvt-unicode` is no longer installed by default via `programs.sway.extraPackages`. The current default configuration uses `alacritty` (and soon `foot`) so this is only an issue when using a customized configuration and not installing `rxvt-unicode` explicitly.

nixos/modules/programs/sway.nix

@@ -91,10 +91,9 @@ in {
       type = with types; listOf package;
       default = with pkgs; [
         swaylock swayidle alacritty dmenu
-        rxvt-unicode # For backward compatibility (old default terminal)
       ];
       defaultText = literalExample ''
-        with pkgs; [ swaylock swayidle rxvt-unicode alacritty dmenu ];
+        with pkgs; [ swaylock swayidle alacritty dmenu ];
       '';
       example = literalExample ''
         with pkgs; [