added sddm avatars

modules/system/hyprland/default.nix

@@ -47,6 +47,38 @@ in
       package = pkgs.libsForQt5.sddm;
     };
 
+    # Define systemd service to run on boot to load avatars for sddm
+    systemd.services."sddm-avatar" = {
+      description = "Service to copy or update users Avatars at startup.";
+      wantedBy = [ "multi-user.target" ];
+      before = [ "sddm.service" ];
+      script = ''
+        set -eu
+        mkdir -p /var/lib/AccountsService/icons
+        for user in /home/*; do
+            username=$(basename "$user")
+            if [ -f "$user/.face.icon" ]; then
+                if [ ! -f "/var/lib/AccountsService/icons/$username" ]; then
+                    cp "$user/.face.icon" "/var/lib/AccountsService/icons/$username"
+                else
+                    if [ "$user/.face.icon" -nt "/var/lib/AccountsService/icons/$username" ]; then
+                        cp "$user/.face.icon" "/var/lib/AccountsService/icons/$username"
+                    fi
+                fi
+            fi
+        done
+      '';
+      serviceConfig = {
+        Type = "simple";
+        User = "root";
+        StandardOutput = "journal+console";
+        StandardError = "journal+console";
+      };
+    };
+
+    # # Ensures SDDM starts after the service.
+    systemd.services.sddm = { after = [ "sddm-avatar.service" ]; };
+
     # xwayland
     services.xserver = {
       enable = true;