feat(home): Set Niri wallpaper

modules/home/services/swaybg/default.nix

@@ -0,0 +1,44 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}: let
+  cfg = config.marleyos.services.swaybg;
+in {
+  options.marleyos.services.swaybg = {
+    enable = lib.mkEnableOption "swaybg";
+
+    wallpaper = lib.mkOption {
+      type = lib.types.path;
+      description = "Path to the wallpaper to use.";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.packages = with pkgs; [
+      swaybg
+    ];
+
+    systemd.user.services.swaybg = {
+      Install = {
+        WantedBy = ["graphical-session.target"];
+      };
+
+      Unit = {
+        Description = "Wallpaper tool for Wayland compositors";
+        Documentation = ["man:swaybg(1)"];
+        After = ["graphical-session-pre.target"];
+        PartOf = ["graphical-session.target"];
+      };
+
+      Service = {
+        Type = "exec";
+        ExecStart = "${lib.getExe pkgs.swaybg} -i ${cfg.wallpaper}";
+        ExecReload = "${lib.getExe' pkgs.coreutils "kill"} -SIGUSR2 $MAINPID";
+        KillMode = "mixed";
+        Restart = "on-failure";
+      };
+    };
+  };
+}

modules/home/wayland/niri/default.nix

@@ -17,6 +17,10 @@ in {
         fuzzel.enable = true;
       };
       services = {
+        swaybg = {
+          enable = true;
+          wallpaper = ./wallpaper.png;
+        };
         swaync.enable = true;
       };
     };
@@ -25,7 +29,9 @@ in {
       # Auto-enabled by the nixos module
       # enable = true;
 
-      settings = {
+      settings = let
+        cmd = command: {command = [command];};
+      in {
         prefer-no-csd = true;
         hotkey-overlay.skip-at-startup = true;