add ox-reveal with reveal.js

settings/org-settings.el

@@ -116,7 +116,7 @@ Example defines
   :delight (org-mode "🅞")  ;; "Org "
   :defer t
   :init
-  (setq org-export-backends '(ascii html icalendar latex odt tufte md))
+  (setq org-export-backends '(ascii html icalendar latex md odt reveal tufte))
   :config
   (setq org-startup-with-inline-images t)          ;; #+STARTUP: inlineimages|noinlineimages, show inline images when loading a new Org file
   (setq org-image-actual-width '(600))             ;; image width displayed in org
@@ -966,6 +966,11 @@ used as a communication channel."
   (setq org-publish-timestamp-directory (concat user-cache-directory "org-timestamps/"))
   (setq org-publish-project-alist my-org-publish-project-alist))
 
+(use-package ox-reveal
+  :defer t  ;; will be loaded via `org-export-backends' see above inside `org'
+  :config
+  (setq org-reveal-root (concat "file://" (expand-file-name user-emacs-directory) "scripts/reveal.js")))
+
 (use-package org-drill  ;; requires persist https://elpa.gnu.org/packages/persist.html
   :commands org-drill)