@@ 6,6 6,7 @@
;;; Copyright © 2015 Alex Kost <alezost@gmail.com>
;;; Copyright © 2015, 2016 David Thompson <davet@gnu.org>
;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2016 Kei Yamashita <kei@openmailbox.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ 407,3 408,35 @@ games. In addition to basic pixel editing features, Aseprite can assist in
the creation of animations, tiled graphics, texture atlases, and more.")
(home-page "http://www.aseprite.org/")
(license license:gpl2+)))
+
+(define-public qqwing
+ (package
+ (name "qqwing")
+ (version "1.3.4")
+ (source (origin
+ (method url-fetch)
+ (uri (string-append
+ "https://qqwing.com/"
+ name "-" version ".tar.gz"))
+ (sha256
+ (base32
+ "0bw0papyqjg22z6irf36gs54y8236wa37b6gyn2h1spy65n76lqp"))))
+ (build-system gnu-build-system)
+ (native-inputs
+ `(("pkg-config" ,pkg-config)))
+ (home-page "https://qqwing.com/")
+ (synopsis "Sudoku puzzle solver and generator")
+ (description
+ "QQWing is a Sudoku puzzle generator and solver.
+It offers the following features:
+@enumerate
+@item Can solve 1000 puzzles in 1 second and generate 1000 puzzles in 25 seconds.
+@item Uses logic. Uses as many solve techniques as possible when solving
+ puzzles rather than guessing.
+@item Rates puzzles. Most generators don't give an indication of the difficulty
+ of a Sudoku puzzle. QQwing does.
+@item Can print solve instructions for any puzzle.
+@item Customizable output style, including a CSV style that is easy to
+ import into a database.
+@end enumerate")
+ (license license:gpl2+)))