aboutsummaryrefslogtreecommitdiff
path: root/gnu
diff options
context:
space:
mode:
authorJakub Kądziołka <kuba@kadziolka.net>2020-01-27 22:08:48 +0100
committerNicolas Goaziou <mail@nicolasgoaziou.fr>2020-01-28 09:27:56 +0100
commit479f401361a5f7dc54c7fefdca211bd2452dea5a (patch)
tree6a47cd5ee110f32ae20ba20375012597cd4b224e /gnu
parentcfb065fcb936fe773f25f1797564320baa3990f3 (diff)
downloadguix-479f401361a5f7dc54c7fefdca211bd2452dea5a.tar
guix-479f401361a5f7dc54c7fefdca211bd2452dea5a.tar.gz
gnu: Add python-pypng.
* gnu/packages/python-xyz.scm (python-pypng): New variable. Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Diffstat (limited to 'gnu')
-rw-r--r--gnu/packages/python-xyz.scm30
1 files changed, 30 insertions, 0 deletions
diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 2af2b2011c..31aeffa161 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -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
+ "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)))