fix(home): Manually create target.tray

Home manager stable only creates this on xorg. It is fixed in future
versions.

modules/home/programs/wayland/waybar/default.nix

@@ -18,6 +18,7 @@ in {
 
     programs.waybar = {
       enable = true;
+      systemd.enable = true;
 
       # https://gitlab.com/Zaney/zaneyos/-/blob/main/config/waybar.nix
       settings = [

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/default.nix

@@ -0,0 +1,13 @@
+{
+  config,
+  lib,
+  ...
+}: {
+  # Fix the "tray.target not found" error.
+  systemd.user.targets.tray = lib.mkIf (!config.xsession.enable) {
+    Unit = {
+      Description = "Home Manager System Tray";
+      Requires = ["graphical-session-pre.target"];
+    };
+  };
+}

modules/home/wayland/niri/default.nix

@@ -7,32 +7,9 @@
 in {
   options.marleyos.wayland.niri = {
     enable = lib.mkEnableOption "niri";
-
-    monitors = lib.mkOption {
-      description = "Monitor configuration.";
-      type = with lib.types; attrsOf str;
-    };
-
-    mainMonitor = lib.mkOption {
-      description = "Which monitor to treat as the main for workspace assignment";
-      type = with lib.types; str;
-    };
   };
 
   config = lib.mkIf cfg.enable {
-    assertions = [
-      {
-        assertion =
-          if cfg ? monitors
-          then cfg ? mainMonitor
-          else true;
-        message = ''
-          You have defined monitors but not selected the main monitor. Please
-          define marleyos.wayland.niri.mainMonitor.
-        '';
-      }
-    ];
-
     marleyos = {
       programs = {
         waybar.enable = true;
@@ -40,6 +17,10 @@ in {
         fuzzel.enable = true;
       };
       services = {
+        swaybg = {
+          enable = true;
+          wallpaper = ./wallpaper.png;
+        };
         swaync.enable = true;
       };
     };
@@ -48,7 +29,12 @@ 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;
+
         layout = {
           gaps = 16;
           center-focused-column = "never";