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gnu: Add python-pypng.

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* gnu/packages/python-xyz.scm (python-pypng): New variable.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>
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Jakub Kądziołka 2020-01-27 22:08:48 +01:00 committed by Nicolas Goaziou
parent cfb065fcb9
commit 479f401361
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gnu/packages/python-xyz.scm
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@ -68,6 +68,7 @@
;;; Copyright © 2019 Wiktor Żelazny <wzelazny@vurv.cz> ;;; Copyright © 2019 Wiktor Żelazny <wzelazny@vurv.cz>
;;; Copyright © 2019 Tanguy Le Carrour <tanguy@bioneland.org> ;;; Copyright © 2019 Tanguy Le Carrour <tanguy@bioneland.org>
;;; Copyright © 2019 Mădălin Ionel Patrașcu <madalinionel.patrascu@mdc-berlin.de> ;;; Copyright © 2019 Mădălin Ionel Patrașcu <madalinionel.patrascu@mdc-berlin.de>
;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
;;; ;;;
;;; This file is part of GNU Guix. ;;; This file is part of GNU Guix.
;;; ;;;
@ -17436,3 +17437,32 @@ (define-public offlate
dedicated platform. The tool proposes a unified interface for any format and dedicated platform. The tool proposes a unified interface for any format and
an upload option to send your work back to the platform.") an upload option to send your work back to the platform.")
(license license:gpl3+))) (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
"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)))