gnu: Add xfce4-whiskermenu-plugin.

* gnu/packages/xfce.scm (xfce4-whiskermenu-plugin): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/xfce.scm

@@ -8,6 +8,7 @@
 ;;; Copyright © 2017 Petter <petter@mykolab.ch>
 ;;; Copyright © 2017 ng0 <ng0@n0.is>
 ;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2019 Pkill -9 <pkill9@runbox.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -29,6 +30,7 @@
   #:use-module (guix packages)
   #:use-module (guix download)
   #:use-module (guix utils)
+  #:use-module (guix build-system cmake)
   #:use-module (guix build-system glib-or-gtk)
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system trivial)
@@ -406,6 +408,39 @@ to an auto mixer tool like pavucontrol.  It can optionally handle multimedia
 keys for controlling the audio volume.")
     (license gpl2+)))
 
+(define-public xfce4-whiskermenu-plugin
+  (package
+    (name "xfce4-whiskermenu-plugin")
+    (version "2.3.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "http://archive.xfce.org/src/panel-plugins/"
+                                  name "/" (version-major+minor version) "/"
+                                  name "-" version ".tar.bz2"))
+              (sha256
+               (base32
+                "1cnas2x7xi53v6ylq44040narhzd828dc0ysz8yk3qn2mmvp5yr2"))))
+    (build-system cmake-build-system)
+    (native-inputs
+     `(("pkg-config" ,pkg-config)
+       ("intltool" ,intltool)))
+    (inputs
+     `(("xfce4-panel" ,xfce4-panel)
+       ("garcon" ,garcon)
+       ("exo" ,exo)
+       ("gtk+" ,gtk+-2)))
+    (arguments
+      `(#:tests? #f)) ; no tests
+    (home-page "https://goodies.xfce.org/projects/panel-plugins/xfce4-whiskermenu-plugin")
+    (synopsis "Application menu panel plugin for Xfce")
+    (description
+     "This package provides an alternative to the default application menu
+panel plugin for Xfce4.  It uses separate sections to display categories and
+applications, and includes a search bar to search for applications.")
+    ;; The main plugin code is covered by gpl2, but files in panel-plugin directory
+    ;; are covered by gpl2+.  The SVG icon is covered by gpl2.
+    (license (list gpl2 gpl2+))))
+
 (define-public xfce4-xkb-plugin
   (package
     (name "xfce4-xkb-plugin")