From 8c8cc9684a672f85e07a4cefd665abe43ee3fa6c Mon Sep 17 00:00:00 2001
From: Feng Shu <tumashu@163.com>
Date: Sat, 15 Apr 2017 20:23:10 +0800
Subject: [PATCH 2/2] gnu: add emacs-exwm

* gnu/packages/emacs.scm (emacs-exwm): New variable
---
 gnu/packages/emacs.scm | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)

diff --git a/gnu/packages/emacs.scm b/gnu/packages/emacs.scm
index 658e4ee00..75d24fb1f 100644
--- a/gnu/packages/emacs.scm
+++ b/gnu/packages/emacs.scm
@@ -4394,3 +4394,88 @@ 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+)))
+
+(define-public emacs-exwm
+  (package
+    (name "emacs-exwm")
+    (version "0.13-3.7a5bb11")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/ch11ng/exwm")
+                    (commit "7a5bb1156d07848e465f55fd31f8ec755b52aa01")))
+              (file-name (string-append name "-" version "-checkout"))
+              (sha256
+               (base32
+                "0cbaq2ls8pivz4h8hwgn9ldvg16pwlisdf047civvilqiqczw31w"))))
+    (build-system emacs-build-system)
+    (propagated-inputs
+     `(("emacs-xelb" ,emacs-xelb)))
+    (inputs
+     `(("xhost" ,xhost)
+       ("dbus" ,dbus)))
+    ;; The following functions and variables needed by emacs-exwm are
+    ;; not included in emacs-minimal:
+    ;; scroll-bar-mode, fringe-mode
+    ;; 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 'build 'install-xsession
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let* ((emacs-path (string-append (assoc-ref inputs "emacs")
+                                               "/bin/emacs"))
+                    (sh-path    (string-append (assoc-ref inputs "bash")
+                                               "/bin/sh"))
+                    (xhost-path (string-append (assoc-ref inputs "xhost")
+                                               "/bin/xhost"))
+                    (dbus-launch-path (string-append (assoc-ref inputs "dbus")
+                                                     "/bin/dbus-launch"))
+                    (output (assoc-ref outputs "out"))
+                    (xsessions-dir (string-append output "/share/xsessions"))
+                    (desktop-file (string-append xsessions-dir "/exwm.desktop"))
+                    (bin-dir (string-append output "/bin"))
+                    (exwm-default-session (string-append bin-dir "/exwm-default-session")))
+               ;; Add a .desktop file to xsessions.
+               (mkdir-p xsessions-dir)
+               (mkdir-p bin-dir)
+               (with-output-to-file desktop-file
+                 (lambda _
+                   (format #t
+                    "[Desktop Entry]~@
+                     Name=Exwm~@
+                     Comment=Emacs X Window Manager ~@
+                     Exec=~a/bin/exwm-default-session~@
+                     TryExec=~@*~a/bin/exwm-default-session~@
+                     Type=Application~%"
+                    output)))
+               ;; Add a shell wrap file to bin directory.
+               ;; Fixup: Set DISPLAY variable for the reason:
+               ;; https://github.com/ch11ng/exwm/issues/213
+               (with-output-to-file exwm-default-session
+                 (lambda _
+                   (format #t
+                    "#!~a ~@
+                     export DISPLAY=:0 ~@
+                     ~a +SI:localuser:$USER ~@
+                     exec ~a --exit-with-session ~a -q --eval \"~a\" ~%"
+                    sh-path xhost-path dbus-launch-path emacs-path
+                    (string-append
+                     "(if (file-exists-p \\\"~/.exwm.el\\\")"
+                     "(load \\\"~/.exwm.el\\\")"
+                     "(require 'exwm)"
+                     "(require 'exwm-config)"
+                     "(exwm-config-default)"
+                     "(message \\\"EXWM: ~/.exwm.el is not exist. use exwm fallback configure.\\\")"
+                     ")"))))
+               (chmod exwm-default-session #o555)
+               #t))))))
+    (home-page "https://github.com/ch11ng/exwm")
+    (synopsis "Emacs X Window Manager")
+    (description "EXWM (Emacs X Window Manager) is a full-featured
+tiling X window manager for Emacs built on top of XELB.")
+    (license license:gpl3+)))
-- 
2.12.2