Rebase to flake parts #6

modules/hosts/14900k/_private/displays.nix

@@ -1,5 +1,5 @@
 # Monitor layout for 14900k (ported from NixOS-New `hosts/clients/14900k/home.nix`).
-# Niri: `chiasson.desktop.niri.extraSettings.extraConfig` (wrapper-modules / system package).
+# Niri: `chiasson.desktop.niri.extraSettings` (`extraConfig` KDL + `binds` merged with defaults).
 # Hyprland: `chiasson.desktop.hyprland.settings` (merged in HM when `chiasson.desktop.hyprland.enable`).
 
 #TODO[epic=Moderate] Clean this up, move to host's configuration.nix.
@@ -8,41 +8,50 @@ let
   gpuPassthrough = config.chiasson.system.vm.gpuPassthrough.enable;
 in
 {
-  chiasson.desktop.niri.extraSettings.extraConfig =
-    if gpuPassthrough then
-      ''
-        output "DP-1" {
-            mode "2560x1080@144"
-            scale 1.0
-            position x=1920 y=0
-            focus-at-startup
-        }
-        output "HDMI-A-2" {
-            mode "1920x1080@60"
-            scale 1.0
-            position x=0 y=0
-        }
-      ''
-    else
-      ''
-        output "DP-2" {
-            mode "2560x1080@144"
-            scale 1.0
-            position x=0 y=0
-            focus-at-startup
-        }
-        output "HDMI-A-3" {
-            mode "1920x1080@60"
-            scale 1.0
-            position x=-1920 y=0
-        }
-        output "DP-4" {
-            mode "1920x1080@144"
-            scale 1.0
-            position x=0 y=-1080
-        }
+  chiasson.desktop.niri.extraSettings = {
+    extraConfig =
+      if gpuPassthrough then
+        ''
+          output "DP-1" {
+              mode "2560x1080@144"
+              scale 1.0
+              position x=1920 y=0
+              focus-at-startup
+          }
+          output "HDMI-A-2" {
+              mode "2560x1080@60"
+              scale 1.0
+              position x=0 y=0
+          }
+        ''
+      else
+        ''
+          output "DP-2" {
+              mode "2560x1080@144"
+              scale 1.0
+              position x=0 y=0
+              focus-at-startup
+          }
+          output "HDMI-A-3" {
+              mode "1920x1080@60"
+              scale 1.0
+              position x=-1920 y=0
+          }
+          output "DP-4" {
+              mode "1920x1080@144"
+              scale 1.0
+              position x=0 y=-1080
+          }
 
-      '';
+        '';
+
+    binds."XF86Tools".spawn = [
+      "wpctl"
+      "set-mute"
+      "@DEFAULT_AUDIO_SOURCE@"
+      "toggle"
+    ];
+  };
 
   chiasson.desktop.hyprland.settings = lib.mkIf config.chiasson.desktop.hyprland.enable (
     let