From 7b0b3661de614a8d39ee904d08df5eefde5a14ac Mon Sep 17 00:00:00 2001
From: Feng Shu <tumashu@163.com>
Date: Fri, 14 Apr 2017 23:06:15 +0800
Subject: [PATCH 1/2] gnu: add emacs-xelb

* gnu/packages/emacs.scm (emacs-xelb): New variable.
---
 gnu/packages/emacs.scm | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/gnu/packages/emacs.scm b/gnu/packages/emacs.scm
index 976ea31e0..53a9bec0b 100644
--- a/gnu/packages/emacs.scm
+++ b/gnu/packages/emacs.scm
@@ -24,6 +24,7 @@
 ;;; Copyright © 2017 Kyle Meyer <kyle@kyleam.com>
 ;;; Copyright © 2017 Kei Kebreau <kei@openmailbox.org>
 ;;; Copyright © 2017 George Clemmer <myglc2@gmail.com>
+;;; Copyright © 2017 Feng Shu <tumashu@163.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -4360,3 +4361,47 @@ commands are also offered as part of the AUCTeX package, but it is not
 the same - CDLaTeX focuses on speediness for inserting LaTeX
 constructs.")
     (license license:gpl3+)))
+
+(define-public emacs-xelb
+  (package
+    (name "emacs-xelb")
+    (version "0.12-3.d1d6b6c")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/ch11ng/xelb")
+                    (commit "d1d6b6cb48a6a9562252be20ab49f24708b34335")))
+              (file-name (string-append name "-" version "-checkout"))
+              (sha256
+               (base32
+                "0sxx2n3mi90dz66yi4xya89jrznyixfbmnj8b84l6qbkdp9iwd91"))))
+    (build-system emacs-build-system)
+    ;; The following functions and variables needed by emacs-xelb are
+    ;; not included in emacs-minimal:
+    ;; x-display-screens x-keysym-table x-alt-keysym x-meta-keysym
+    ;; x-hyper-keysym x-super-keysym libxml-parse-xml-region
+    ;; x-display-pixel-width x-display-pixel-height
+    (arguments
+     `(#:emacs ,emacs
+       #:phases
+       ;; Generate .el files from the XML description of the XCB bindings.
+       ;; This will be adjusted when xelb developer comment in issue page:
+       ;; https://github.com/ch11ng/xelb/issues/16
+       (modify-phases %standard-phases
+         (add-after 'unpack 'regenerate-el-files
+           (lambda* (#:key inputs #:allow-other-keys)
+             (zero? (system* "make"
+                             (string-append "PROTO_PATH="
+                                            (assoc-ref inputs "xcb-proto")
+                                            "/share/xcb")
+                             (string-append "EMACS_BIN="
+                                            (assoc-ref inputs "emacs")
+                                            "/bin/emacs -Q"))))))))
+    (native-inputs `(("xcb-proto" ,xcb-proto)))
+    (home-page "https://github.com/ch11ng/xelb")
+    (synopsis "X protocol Emacs Lisp Binding")
+    (description "@code{emacs-xelb} is a pure Emacs Lisp implementation
+of the X11 protocol based on the XML description files from the XCB
+project.  It features an object-oriented API and permits a certain degree
+of concurrency.  It should enable you to implement low-level X11 applications.")
+    (license license:gpl3+)))
-- 
2.12.2