branch master updated: gnu: Add emacs-chess.

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     new 70dcd7c  gnu: Add emacs-chess.
70dcd7c is described below

commit 70dcd7c78bdbe8bacf1b130090be0c788547689e
Author: Michael Rohleder <mike@rohleder.de>
AuthorDate: Mon Jul 6 11:46:56 2020 +0200

    gnu: Add emacs-chess.
    
    * gnu/packages/emacs-xyz.scm (emacs-chess): New variable.
    
    Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>
---
 gnu/packages/emacs-xyz.scm | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
index 8ca331e..b1b9bf4 100644
--- a/gnu/packages/emacs-xyz.scm
+++ b/gnu/packages/emacs-xyz.scm
@@ -5905,6 +5905,37 @@ The goal of this game is to create a tile with value 
2048.  The size of the
 board and goal value can be customized.")
     (license license:gpl3+)))
 
+(define-public emacs-chess
+  (package
+    (name "emacs-chess")
+    (version "2.0.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://elpa.gnu.org/packages/";
+                           "chess-" version ".tar"))
+       (sha256
+        (base32 "1sq1bjmp513vldfh7hc2bbfc54665abqiz0kqgqq3gijckaxn5js"))))
+    (build-system emacs-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'install 'install-pieces
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (pieces
+                     (string-append out "/share/emacs/site-lisp/pieces")))
+               (mkdir-p site-lisp)
+               (copy-recursively "pieces" pieces)
+               #t))))))
+    (home-page "https://elpa.gnu.org/packages/chess.html";)
+    (synopsis "Play chess in GNU Emacs")
+    (description
+     "Chess is an Emacs Lisp library and several clients on top of the
+underlying library functionality for performing various activities related to
+the game of chess.")
+    (license license:gpl3+)))
+
 (define-public emacs-4clojure
   ;; There is no release.  Base version is extracted from Version keyword in
   ;; the main file.