feat(emulation): declare RetroArch configuration

configs/nixos/modules/desktop/emulation/retroarch.nix

@@ -22,7 +22,38 @@ in
   };
 
   config = lib.mkIf cfg.enable {
+    sops.secrets =
+      lib.genAttrs
+        [
+          "retroarch/romm/user"
+          "retroarch/romm/password"
+          "retroarch/retroachievements/user"
+          "retroarch/retroachievements/password"
+        ]
+        (_: {
+          sopsFile = ../../../secrets + "/${config.networking.hostName}.yaml";
+        });
+
+    sops.templates.retroarch-credentials = {
+      owner = user;
+      mode = "0400";
+      content = ''
+        webdav_username = "${config.sops.placeholder."retroarch/romm/user"}"
+        webdav_password = "${config.sops.placeholder."retroarch/romm/password"}"
+        cheevos_username = "${config.sops.placeholder."retroarch/retroachievements/user"}"
+        cheevos_password = "${config.sops.placeholder."retroarch/retroachievements/password"}"
+      '';
+    };
+
     home-manager.users.${user} = {
+      home.file.".config/retroarch/retroarch.cfg" = {
+        force = true;
+        text = ''
+          config_save_on_exit = "false"
+          #include "${config.sops.templates.retroarch-credentials.path}"
+        '';
+      };
+
       home.packages = [
         (pkgs.wrapRetroArch {
           cores = with pkgs.libretro; [
@@ -45,13 +76,29 @@ in
             cloud_sync_sync_system = "false";
             cloud_sync_sync_mode = "0";
             cloud_sync_destructive = "false";
+            cheevos_enable = "true";
+            cheevos_hardcore_mode_enable = "false";
+            menu_driver = "xmb";
+            menu_shader_pipeline = "1";
+            xmb_menu_color_theme = "19";
+            content_show_add_entry = "0";
+            content_show_contentless_cores = "0";
+            content_show_explore = "false";
+            content_show_favorites = "false";
+            content_show_history = "false";
+            content_show_images = "false";
+            content_show_playlists = "false";
+            content_show_video = "false";
+            menu_icon_thumbnails = "3";
+            menu_thumbnails = "0";
+            network_on_demand_thumbnails = "true";
+            netplay_nickname = user;
           }
           // lib.optionalAttrs (cfg.browserDirectory != "") {
             rgui_browser_directory = cfg.browserDirectory;
           };
         })
       ];
-
     };
 
     registry.window-icon.${config.networking.hostName}.retroarch = {