@@ -68,6 +68,7 @@
;;; Copyright © 2019 Wiktor Żelazny <wzelazny@vurv.cz>
;;; Copyright © 2019 Tanguy Le Carrour <tanguy@bioneland.org>
;;; Copyright © 2019 Mădălin Ionel Patrașcu <madalinionel.patrascu@mdc-berlin.de>
+;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -17436,3 +17437,32 @@ Project, or not such a gitlab instance when your upstream doesn't use any
dedicated platform. The tool proposes a unified interface for any format and
an upload option to send your work back to the platform.")
(license license:gpl3+)))
+
+(define-public python-pypng
+ (package
+ (name "python-pypng")
+ (version "0.0.20")
+ (source
+ (origin
+ (method url-fetch)
+ (uri (pypi-uri "pypng" version))
+ (sha256
+ (base32
+ "02qpa22ls41vwsrzw9r9qhj1nhq05p03hb5473pay6y980s86chh"))))
+ (build-system python-build-system)
+ (home-page "https://github.com/drj11/pypng")
+ (synopsis "Pure Python PNG image encoder/decoder")
+ (description
+ ;; Description adapted from Debian
+ "The PyPNG module implements support for PNG images. It reads and writes PNG files
+with all allowable bit depths (1/2/4/8/16/24/32/48/64 bits per pixel) and colour
+combinations: greyscale (1/2/4/8/16 bit); RGB, RGBA, LA (greyscale with alpha) with
+8/16 bits per channel; colour mapped images (1/2/4/8 bit). Adam7 interlacing is supported
+for reading and writing. A number of optional chunks can be specified (when writing) and
+understood (when reading): tRNS, bKGD, gAMA.
+
+PyPNG is not a high level toolkit for image processing (like PIL) and does not aim at
+being a replacement or competitor. Its strength lies in fine-grained extensive support of
+PNG features. It can also read and write Netpbm PAM files, with a focus on its use as an
+intermediate format for implementing custom PNG processing.")
+ (license license:expat)))