gnu: Add libqtxdg.

* gnu/packages/lxqt.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Register it.

Co-authored-by: Sou Bunnbu <iyzsong@gmail.com>

gnu-system.am

@@ -183,6 +183,7 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/lsh.scm				\
   gnu/packages/lsof.scm				\
   gnu/packages/lua.scm				\
+  gnu/packages/lxqt.scm				\
   gnu/packages/lynx.scm				\
   gnu/packages/m4.scm				\
   gnu/packages/man.scm				\

gnu/packages/lxqt.scm

@@ -0,0 +1,58 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2015 Andreas Enge <andreas@enge.fr>
+;;; Copyright © 2015 Sou Bunnbu <iyzsong@gmail.com>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages lxqt)
+  #:use-module (guix download)
+  #:use-module ((guix licenses) #:select (lgpl2.1+))
+  #:use-module (guix packages)
+  #:use-module (guix utils)
+  #:use-module (guix build-system cmake)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages qt))
+
+(define-public libqtxdg
+  (package
+    (name "libqtxdg")
+    (version "1.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+         (string-append "https://github.com/lxde/" name "/releases/download/"
+                        version "/" name "-" version ".tar.xz"))
+       (sha256
+        (base32
+         "00j0zzb8zn714lv77fawahlalxjznvh06nlhlz47qf0krngri42w"))))
+    (build-system cmake-build-system)
+    (arguments
+     `(#:tests? #f ; handled by configure flag instead
+       #:configure-flags '(;; FIXME: Currently, the tests fail; this is a
+                           ;; known issue, see
+                           ;; https://github.com/lxde/libqtxdg/issues/42
+                           ;; Enable in new release.
+                           "-DBUILD_TESTS=OFF")))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (propagated-inputs
+     `(("qt" ,qt))) ; according to Qt5Xdg.pc
+    (home-page "https://github.com/lxde/libqtxdg")
+    (synopsis "Qt implementation of freedesktop.org xdg specifications")
+    (description "Libqtxdg implements the freedesktop.org xdg specifications
+in Qt.")
+    (license lgpl2.1+)))