gnu: Add emacs-crdt.

* gnu/packages/emacs-xyz.scm (emacs-crdt): New variable.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu/packages/emacs-xyz.scm

@@ -16184,6 +16184,32 @@ (define-public emacs-elisp-refs
 confused by comments or @code{foo-bar} matching @code{foo}.")
     (license license:gpl3+)))
 
+(define-public emacs-crdt
+  (let ((commit "44068ae505adf2c3a7bdbf6723a25fc45d6d1666")
+        (revision "0"))
+    (package
+      (name "emacs-crdt")
+      (version (git-version "0.0.0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://code.librehq.com/qhong/crdt.el")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32 "130fkhvi757pfnbz70g6nw2n71k89cwwx7yzvsd5v177228c8w7w"))))
+      (build-system emacs-build-system)
+      (home-page "https://code.librehq.com/qhong/crdt.el")
+      (synopsis "Real-time collaborative editing environment")
+      (description
+       "@code{crdt.el} is a real-time collaborative editing environment for
+Emacs using Conflict-free Replicated Data Types.  With it, you can share
+multiple buffer in one session, and see other users’ cursor and region.  It
+also synchronizes Org mode folding status.  It should work with all of Org
+mode.")
+      (license license:gpl3+))))
+
 (define-public emacs-crux
   (let ((commit "308f17d914e2cd79cbc809de66d02b03ceb82859")
         (revision "2"))