Niri: call set-background at startup

programs/desktop/default.nix

@@ -19,7 +19,9 @@
   ];
   home.packages = with pkgs; [
     swaybg
-    (writeShellScriptBin "set-background" "${swaybg}/bin/swaybg -m fill -i ${./wallpapers/default.jpg}")
+    (writeShellScriptBin "set-background" ''
+      ${swaybg}/bin/swaybg -m fill -i ${./wallpapers/default.jpg}
+    '')
     (writeShellScriptBin "protonmail-setup-bridge" ''
       pkill -9 -f protonmail-bridge
       ${protonmail-bridge}/bin/protonmail-bridge -c

programs/desktop/niri/config.kdl

@@ -40,6 +40,8 @@ layout {
 
 screenshot-path "~/Pictures/Screenshots/Screenshot from %Y-%m-%d %H-%M-%S.png"
 
+spawn-at-startup "set-background"
+
 binds {
     Mod+Shift+Slash { show-hotkey-overlay; }
     Mod+Return { spawn "foot"; }